While that would be extremely rare, it would probably be difficult to check for without running the game itself. Standard algebraic notation for chess only includes checks, checkmates, and sometimes draw offers in the actual move notation, with draws recorded separately as the match score at the end. It depends on if lichess records that or not and it would be easy to calculate that score if there were multiple matches in a row and the score were a running total. There is also similar ambiguity for en passant checkmates. There's no standard symbol for an en passant, so we can really only approximate how many checkmates are en passants without just simply playing the entire board (which would be much more time consuming)
@@BetaDude40 There's only 665 double-disambiguated bishop moves in total. Be pretty easy to check if there's a move after those or not to narrow it down.
@@BetaDude40 The lichess database comes with, above the game notation, a flag called "termination" - which is a text string describing what ended the game, so this would actually be not so bad to find out
@@BenAlternate-zf9nr 50 move rule does necessitate a non-capture however, so i suspect a doubly disambiguated bishop capture timeout vs insufficient material could take longer to achieve
This is the wonderful type of video that accidentally destroys the data it was based on, as this will encourage people to try and be the first person (on Lichess) to do a doubly disambiguated bishop capture checkmate.
I don't think so because very specific sets of circumstances have to happen, however it might see an uptick in uses because of this video. No I don't play chess, however he states in the video that things like this happen because the circumstances behind it are rare.
Hikaru played both "doubly disambiguated bishop capture checkmate" & "doubly disambiguated knight capture checkmate" against a random in blitz just after watching this video. Very cool
i watched this entire thing without realising it was made 30 minutes ago because this feels like a youtube classic that shows up every once in a while and everyone loves them edit: we hit 100 replies, and im leaving this here as a disclaimer. if you ever reply to this saying "hurr durrr the video isnt 30 minutes old" i KNOW. comments AGE. not every comment was posted the minute you read it, so help me god
I LOVE the little details in this video. The little right hand gets struck by lightning @10:26 and when it appears again @10:54 it has a bandage over it.
I was thinking that, if this goes on the Rosen Score site we’ll have dozens of each before the week is over, then we’d have to find new rarer classes of moves!
ok an insane amount of love and care went into this video, and into details that almost NO ONE would ever notice. check this out. at 11:25 he actually can't add anymore lines to this list without overlapping with the little data box graphic. but instead of the obvious option of just having the box fade out or slide off screen or something, the box vanishes while it is hidden behind the image coming on screen at 11:32! that was such an unnecessary detail that he went out of his way to do!!
@@andrewbernhardt4292 because then the next lines wouldn’t be visible. The pie chart graphic shows up at 11:32 and then the second graphic at 11:33 comes and the box disappears. So at 11:47 when new lines show up there’s space for them (without the text having to go in front of or behind the box, both of which aren’t as neat a solution)
Now everyone will probably get on lichess and try to play games with doubly disambiguated bishop/knight capture checkmates, so I predict that in short order the bishop non-capture variety will become rarest :P
Totally agree, this is like achievements in games. It was very clear that the discovered double disambiguation checkmate, was indeed the two players working together to produce that result. With the number of views that video gets, it becomes likely that someone will try to produce them.
@@KimMilvangNo that was someone griefing. He probably delivered checkmate with one second on the clock..... I do it with knights lol. Apparently I need to configure them better so the last move is doubly disambiguated capture mate 😂
Technically, we could add promotion itself to the complication. So bxa8=Q# would be a capturing pawn move with a queen promotion that causes checkmate.
Promotion is probably a lot less rare than you might think. No possibility of it needing extra disambiguation, and promotions inherently add a lot of extra spaces of control to the board, so getting a checkmate from them isn't that rare. Even underpromotion isn't going to be that much rarer, because the chances of you only needing a single line of attack is very high if you're already in that situation to begin with - why not underpromote for style if you only need the diagonal to win?
@@dsgamecube I imagine underpromotion is a common taunt in promotion checkmates, like why wouldn't you just pick the weakest piece that will do it at that point?
I’d say the Pam-Krabbe castling is the rarest move as it was an unintended move that could be made based on how the rules of castling were written and has since been changed to prevent such a loophole thus it is the only move in chess that will ever have a fixed amount of uses compared to the moves you showed which are indeed rare but are still repeatable thus can decrease in rarity over time
I feel like this is gonna randomly be recommended to people like 5 years later. If that is the case, I want someone to reply to this comment at 16 of September 2029, exactly 5 years later
@@guyunger I actually did, yes! Thanks a lot, glad you like the game! How did you know though? Don't think the game is even mentioned anywhere in my profile or anything :D
@@thecaptain291 i mean. My first time disecting a frog. The frog is very much alive with two person holding the hand and leg from opposite side. Another person would then dissect it, and yes the frog is alive during the process. Until we cut the lung, the heart is still continue to beat for however long until it finally die. So uh, afterwards one bring them home to make some frog dish
@@lvlinty it in my hight school biology class. It been a long time so I don't remember if they changed the rule. Also our class only dissecting frog ONE time so I not sure which year exactly I did it
Wait dude this was one day ago? This feels like a video that has been on UA-cam for years, a classic, that's why I was constantly getting it on my recommended huh?
Just a few seconds in and I already love it. Your visual style is just so engaging and fun. Really excited for this one. Edit after having seen the full thing: Yeah, my excitement was not misplaced. This video is awesome. All the little details in the animation are so fun! I especially loved the increasing timer at 5:05, as well as the bandaged hand after 10:55
As noted at the end of the video, that wasn't the only unique move. "1,306 moves only occurred once". so, all of them tie for rarest that happened in the dataset.
I feel the same. It's as if one said that the rarest bird is the Green Raven, because 0 ravens of that color have been found. Is it possible for a green Raven to exist? I mean theoretically, why not? There are plenty of green birds so it's not impossible for a mutation to occur to a raven, and perhaps it did occur once in our planet's long history. But as long as we don't find evidence that a green raven exists or existed, that shouldn't be considered a "rare bird".
really nice little detail: around mionute 10 second 50 (+/- 5 seconds) one hand destroys a glass and a few seconds later the hand has got a band aid thing on it - i really love this detail - nice work
As opposed to getting the move, how about avoiding a move instead. Make a banning phase pre-game, like [O-O, e4, f4] is forbidden, forcing an unusual opening or mate threats
I loved this minimalistic video style, centered the attention about the content and your content was AMAZING. I didn't even know such moves existed as a chess player
What a high-quality video, I really appreciated the way in which you treated data and the friendly presentation. A very interesting and well made video!
I would argue that disambiguated moves are in no way significantly diferent than normal ones. It is an artifact of the notation system, not something inherit to chess. For example, chessbase uses a notation in some portions of the program where moves also record where the piece is coming from. So no ambiguity
I was thinking the same thing. In this video, 2 moves with the notation Bc4 are considered to be the same move, wherever the bishop moves from. But if I see those moves in 2 different games, I certainly wouldn't consider them to be the same move. I wonder what move is rarest if you just consider what piece is being moved and where it moves from and to.
I went frame by frame, and the game is semi-reasonable with just a bunch of blunders, and then black goes bishop promote (which does nothing), bishop promote (which does nothing, again), queen promote (still nothing is happening), moves bishop for discovered checkmate. It's almost like he set that up just to do a really weird and hard to replicate move for the purposes of this video,
@@kindlin that could well be the case hikaru and other top players also like to do that if they have won already because it's a rare occurance to be able to do that, i don't know about the blunders tho
It is more common to think about chess moves in terms of their effects on a game (capture, [discovered] check, fork, promotion, stalemate, [forced] repetition, etc) than standard notation (which of course, does capture most effects, but not all). For example, most cases of double check(mate)s might not ascertainable by (standard) notation alone. Neither would "post-missed-castling/en-passant stalemates" (a board position repeats, but with one of the players no longer being able to castle / perform en passant, it becomes a stalemate). Regardless, this was a really interesting question and notation is probably the best place to start. Your video was enthralling from start to end, and I wouldn't even have these minor criticisms if it hadn't caught my attention as much as it did.
That didn't sound so hard until I realized I've lost 900 rating and I've been playing against 200 elo players for 15 hours straight just for a single checkmate💀💀
I went to your channel thinking "This guy makes really good videos I want to watch more" and when I found I had watched all of your videos I was very sad. Please keep making more videos like this, doesn't have to be about chess or language specifically, just interesting nerd stuff.
This was a fun video to follow along with, and made me feel very smart guessing the numbers on entries #2, #3, and #4. It was amusing that immediately after I thought "doesn't it have to happen at least once to be 'rare', really?" you went right into that point... Your video style is super cozy and satisfying, with all the little gestures and taps feeling really nice
I'd definitely welcome more videos on chess statistics. The results of this really surprised me, like that fact that around a third of possible moves haven't been played on lichess.
This is exactly the type of video I want to watch on youtube. An in-depth question and answer to something I never even asked, but am instantly fascinated by once it is.
It's not hard to hide the fact that a single person was doing the downloading. If they start to bottleneck your rate, you just add a proxy to your download and they suddenly think you're a new person. The easiest way to do the download would've been multiple devices simultaneously downloading it while also hiding the fact that they all reside at the same end destination, and it wouldn't be very difficult to do.
I haven't seen the entire video but from the intro going off of notation intoduces heavy bias. I suspect one of the special disambiguation cases will be the rarest, just because you group together a lot of board state changes with notation, and through disambiguation there are way less board states for for example Nd3e5 than something like xe6 (which could be en passant), while this notation does coincide quite well with unusual moves being rare (double disambiguation nessecitates pawn promotion) some rare moves are still grouped together with really common moves by virtue of not being ambiguous. It makes sense that you use algebraic notation since that is easy data-wise, however it is worth acknowledging that some incredibly weird board states will be obscured here by being grouped together with pretty plain board states.
9:13 there actually isn’t a need for the double disambiguation as ONLY the 6th rank bishop moving could cause checkmate (in the shown scenario, such is possible by arranging one more rook on the right of the other bishop on the 6th rank)
The same is true of the knight move - the knight on the 8th rank can't give mate so there is no need for rank disambiguation. HOWEVER, I think that formally the decision to require disambiguation of rank and/or file only applies to the pieces that COULD move to a square, and you disambiguate any time it might not be obvious which piece is moving. Then check or mate is added after that. That is, sometimes the rules of notation require the use of disambiguation even when it isn't really needed.
For it to be considered rare I think it has to at least happen once. I also think you are making a confusion between the rarest move, and the most complicated notation. In this instance regardless if a move needs to be disambiguated in notation, that move would look the same on the board, even if the notation is different, you are still moving the same knight or bishop. To find the rarest move I think you should look for the most uncommon instances of checkmate, and even the square in which the piece was moved or where the king got checkmated. I think you should also consider moves that end in stalemate, as in some cases that could be even rarer than checkmate.
Totally agree, even though the video is obviously very high quality and a good watch It also sort of bothered me that so many of the example positions would have been stalemates on the previous turns, which makes me feel like many of the ~30% of unplayed moves are just not actually possible
Agreed, disambiguation doesn't necessarily make something a different move. I think standard algebraic notation doesn't actually lend itself well for answering the question at hand, because the same notation can also mean different things in different games, or even in different phases of the same game. Still, interesting video.
@@samheasmanwhiteYes but moves are living inside notations so maybe in the future when we invent a new complex language to describe oddly specific moves
Assuming you are talking about the rook game(checkmate[#]): the king must have gotten checked previous move from the rooks, it moved itsle to that spot, and then white went and delivered checkmate. Assuming you're talking about the check(+) game: the king is just not there and the queen is, it's an example and does not need to be realistic.
13:54 The thing with this position is that the final move doesn't really need any disambiguation. Only one of the 3 moves results in mate. The # already provides sufficient disambiguation.
the right hand bandaged after getting struck by lightning is such a nice detail
Yes!!!
I'm glad that hand survived its injuries.
i thought it was after punching the glass in the previous frame
No, the left hand punched the glass.
@@joe_z i reckon it wouldve suited more
Wait, hear me out!
"Doubly disambiguated bishop non-capture *stalemate* "
While that would be extremely rare, it would probably be difficult to check for without running the game itself. Standard algebraic notation for chess only includes checks, checkmates, and sometimes draw offers in the actual move notation, with draws recorded separately as the match score at the end. It depends on if lichess records that or not and it would be easy to calculate that score if there were multiple matches in a row and the score were a running total.
There is also similar ambiguity for en passant checkmates. There's no standard symbol for an en passant, so we can really only approximate how many checkmates are en passants without just simply playing the entire board (which would be much more time consuming)
@@BetaDude40 There's only 665 double-disambiguated bishop moves in total. Be pretty easy to check if there's a move after those or not to narrow it down.
@@BetaDude40 The lichess database comes with, above the game notation, a flag called "termination" - which is a text string describing what ended the game, so this would actually be not so bad to find out
"draw by 50-move rule" might be even rarer than stalemate, especially considering under-promotion is involved.
@@BenAlternate-zf9nr 50 move rule does necessitate a non-capture however, so i suspect a doubly disambiguated bishop capture timeout vs insufficient material could take longer to achieve
This is the wonderful type of video that accidentally destroys the data it was based on, as this will encourage people to try and be the first person (on Lichess) to do a doubly disambiguated bishop capture checkmate.
If a lot of people do this, he will not need to classify the moves to diferenciate then
Can't wait for the speedrun leaderboard
A job for Eric Rosen!
I don't think so because very specific sets of circumstances have to happen, however it might see an uptick in uses because of this video. No I don't play chess, however he states in the video that things like this happen because the circumstances behind it are rare.
Kinda like that Veritasium video about 37.
14:48
Obviously someone who watched this video will intentionally do that very soon, if not already done.
Hikaru has done both number 2 and 4 now.
just did it but in lichess
The rarest move is me not blundering in bullet
0 comments? Let me fix that.
so super grandmasters do rare moves all the time
@@HhnUjbf 0 replies? Let me fix that.
+2
@@stan0033x No, because the requirements are that specifically @chessplayer6632 achieves the move
Hikaru played both "doubly disambiguated bishop capture checkmate" & "doubly disambiguated knight capture checkmate" against a random in blitz just after watching this video. Very cool
Does that mean he was the 666th bishop to do that? Because there were 665 without cm.
@@bobSeigar 665 on Lichess. Hikaru plays on Chesscom
So he managed 2 checkmates in a single match? Now that is what I call rare!
@@Anodder1 he played the sape person twice
@@Domeer42three times he had it set up the first game and took with the wrong knight😂😂😂
I feel like the data after this video will forever skewed by people wanting to hunt for rare moves by working with friends
The non-capture doubly disambiguated bishop mate game certainly looks like someone wanted to do that.
oh boy oh boy youve really started a movement now
I think Hikaru next week will crush all of these edge-cases :D
yeah that's me i just did it
Like scorigami but for chess moves! Someone should make a website showing all the not yet made moves for people to hunt
I was not ready to how the cursor moves in this video, i absolutely love the animations on it
i watched this entire thing without realising it was made 30 minutes ago because this feels like a youtube classic that shows up every once in a while and everyone loves them
edit: we hit 100 replies, and im leaving this here as a disclaimer. if you ever reply to this saying "hurr durrr the video isnt 30 minutes old" i KNOW. comments AGE. not every comment was posted the minute you read it, so help me god
same.
same here!
same
Exactly!
Exactly.
Amount of doubly disambiguated bishop capture checkmates after this video: 📈📈📈
True. I already did one after stalling for 90 moves against a computer. I tried to make it look nice.
Stonks
I did it also
@@SkreepGaming Ah, I see we've entered the Schrödinger's dataset conundrum.
@@pronoob7296
Was this a game with the 50-move rule disabled?
I assume this is taken from real lichess games, not custom stuff.
I LOVE the little details in this video.
The little right hand gets struck by lightning @10:26 and when it appears again @10:54 it has a bandage over it.
THAT’S SO CUTE WAIT 😭😭😭
Yes
I saw that too
I think it was because it hit glass at 10:43
@@kelinimo The left hand hit the glass, the right (bandaged) hand got struck by lighting.
The editing is insane. So many small and often funny details. Great style, great timing... I love it!
New fear unlocked: being double-disambiguated-bishop-capture-checkmated
New achievement unlocked: Trolling Eric Rosen by resigning the move before he gets to play it
do not tell him about stalemates ...
Imagine how many of these moves could have been played more if not for resignation@@mattc3581
You could sneak a ...-discovered-... in there to make it cooler 😅
I love how humble this is as if it isn’t one of the most epic data analyses in all of chess history
Analyzing a dataset in the billions and going "i dont have enough data" is a humble flex
His voice made it sound as if it was something completely normal and you could do it as well with a piece of scotch-tape and a used condom
@@maxwellquipey1 the requirement of a used condom would make it inaccessible to a lot of the people watching.
See, the thing is, Eric Rosen is probably gonna see this and go hunting (given Rosen trophies)
maybe if this video reaches him!
Rare move bounties sounds like a blast
@@paralogical-dev at least it reached me, so, i'll try to do it :)
I was wondering just that: what is the rarest Rosen position, or any position at all, if one could analyze that?
I was thinking that, if this goes on the Rosen Score site we’ll have dozens of each before the week is over, then we’d have to find new rarer classes of moves!
Genshin players look at 14:07 and drool with such good odds
Winning 50/50 pity🤤
ok an insane amount of love and care went into this video, and into details that almost NO ONE would ever notice. check this out. at 11:25 he actually can't add anymore lines to this list without overlapping with the little data box graphic. but instead of the obvious option of just having the box fade out or slide off screen or something, the box vanishes while it is hidden behind the image coming on screen at 11:32! that was such an unnecessary detail that he went out of his way to do!!
Wow. It's a nice detail, but it's outright impressive that you noticed such a thing. You're like the most attentive viewer on youtube lol
@@bravv-o i just have a passion for editing and like to analyze how people solve problems :p
Craaazyy
That is very observant! But why couldn't the box just stay in the background? I don't understand that.
@@andrewbernhardt4292 because then the next lines wouldn’t be visible. The pie chart graphic shows up at 11:32 and then the second graphic at 11:33 comes and the box disappears. So at 11:47 when new lines show up there’s space for them (without the text having to go in front of or behind the box, both of which aren’t as neat a solution)
Now everyone will probably get on lichess and try to play games with doubly disambiguated bishop/knight capture checkmates, so I predict that in short order the bishop non-capture variety will become rarest :P
😂😂😂
Came here to say this 😅
Once people have a stupid goal, they will do it.
it's too hard they can't do it, plus nobody cares, and the few people who care aren't good enough to do anything
@@TWIlktitbliktvim-ty7td why do people act like a doomer in every single online space for no discernible reason
I'm still amazed by the simple yet genius idea and the perfet execution of those cute little hand animations
So the next step would be: from which square would the double disambiguated bishop capture checkmate be the rarest to have happen
Just wait until all of these numbers spike after this…
Totally agree, this is like achievements in games. It was very clear that the discovered double disambiguation checkmate, was indeed the two players working together to produce that result. With the number of views that video gets, it becomes likely that someone will try to produce them.
@@KimMilvangI think it was just a guy toying with the other
@@KimMilvangNo that was someone griefing. He probably delivered checkmate with one second on the clock.....
I do it with knights lol. Apparently I need to configure them better so the last move is doubly disambiguated capture mate 😂
I cannot believe how nerdy this video is. Well done.
Technically, we could add promotion itself to the complication. So bxa8=Q# would be a capturing pawn move with a queen promotion that causes checkmate.
And then add underpromotion to make it even more ridiculous!
Promotion is probably a lot less rare than you might think. No possibility of it needing extra disambiguation, and promotions inherently add a lot of extra spaces of control to the board, so getting a checkmate from them isn't that rare. Even underpromotion isn't going to be that much rarer, because the chances of you only needing a single line of attack is very high if you're already in that situation to begin with - why not underpromote for style if you only need the diagonal to win?
Covered in the end stats.
But yes, this was my initial guess of rarest move
@@dsgamecube I imagine underpromotion is a common taunt in promotion checkmates, like why wouldn't you just pick the weakest piece that will do it at that point?
I’d say the Pam-Krabbe castling is the rarest move as it was an unintended move that could be made based on how the rules of castling were written and has since been changed to prevent such a loophole thus it is the only move in chess that will ever have a fixed amount of uses compared to the moves you showed which are indeed rare but are still repeatable thus can decrease in rarity over time
I feel like this is gonna randomly be recommended to people like 5 years later. If that is the case, I want someone to reply to this comment at 16 of September 2029, exactly 5 years later
See ya then 👋🏻
Hi possible future me 5 years later :)
Hi future! Hope for the best!
See You all in 5 Yearss 🎉🎉
See you soon
Me: Today is gonna be the most productive day in my life
Me 5 minutes later:
Your first mistake was opening UA-cam
me rn. went to the post office to get a passport and they said nah. now im here
@@beckettherbert6544 rip bozo
Part 2
ua-cam.com/video/sij2Y_xHQCM/v-deo.html
I hate you :'(
After watching your video, videos without the hands seem weirdly unexpressive
Oh no am I going to experience this
Paralogical is gonna have to edit all videos in the future forever now to add hands
real
hey you worked on redungeon right? 😄 one of my favorite mobile games
@@guyunger I actually did, yes! Thanks a lot, glad you like the game! How did you know though? Don't think the game is even mentioned anywhere in my profile or anything :D
I love the little detail of the hand having a little bandage after getting struck by lightning
Your dumb ye u
oh hey
a fellow osc member
15:14 You're talking about Doubly Disambiguated bishop capture mates but the text says Knight Capture Mates
I like that the right hand gets bandages after being struck by lightning. Nice attention to detail!
WOW that's kind of hilarious actually. 10/10 subtle humor
i thought it appeared after breaking the glass, but surprisingly, that was the left hand, and it never got hurt from it
Cool
This reminds me of the longest death message in Minecraft.
@@AmazingRofa loser
lol
Lol
Your profile kinda looks like mine
You’re profile is darker than mine
Genuinely the most engaging chess video I’ve watched yet. I love it when people nerd about this stuff
Fancy seeing you here
Wait until Terasteel over here finds the rarest weapon used to beat a boss
The doubly disambiguated knight capture checkmate now has a proud “1” in its “happened before” box.
Props to Hikaru.
This is one really professional chess video. Just fantastic!
I give it the rare notation A++.😎
He's ranking it A
He's checking it twice
When Jerry is here
Our time will be nice
Wouldn't the chess equivalent be, like, "!!!" or something?
Jerry! I agree with you, this one is absolutely a top-tier video. One of those rare classics, as a comment on this video mentioned.
There are people who have made one-in-all-history chess moves, who never even realized it.
And we have thier li chess usernames
Maybe, but it certainly looked to me like the 1 instance of the bishop mate was completely planned out
Revealing the rarest move is like disecting a frog. You learn about how it works, but you kill it in the process.
i mean hopefully you kill the frog _beforehand_ but okay-
@@thecaptain291 i mean. My first time disecting a frog. The frog is very much alive with two person holding the hand and leg from opposite side. Another person would then dissect it, and yes the frog is alive during the process.
Until we cut the lung, the heart is still continue to beat for however long until it finally die. So uh, afterwards one bring them home to make some frog dish
@@liu1806 what the hell 💀
@@liu1806that's wildly unethical and should have been reported if this was in some institution.
@@lvlinty it in my hight school biology class. It been a long time so I don't remember if they changed the rule. Also our class only dissecting frog ONE time so I not sure which year exactly I did it
"What does it mean to play chess" freaking killed me
My man is back with a third video out of nowhere
Bro finally remembered his password
😂
Lmao@@alex.g7317
Wait dude this was one day ago? This feels like a video that has been on UA-cam for years, a classic, that's why I was constantly getting it on my recommended huh?
Just a few seconds in and I already love it. Your visual style is just so engaging and fun. Really excited for this one.
Edit after having seen the full thing: Yeah, my excitement was not misplaced. This video is awesome. All the little details in the animation are so fun! I especially loved the increasing timer at 5:05, as well as the bandaged hand after 10:55
Nerd-tier data collection and statistical analysis. An Euler diagram. Love it!
I'd agree on the "must exist to be the rarest" argument, and crown the double disambiguated non-capture bishop checkmate for the time being.
100%, if it hasn't happened, it's not rare. You can't say, for example, mammoths are rare if there aren't any at all.
As noted at the end of the video, that wasn't the only unique move. "1,306 moves only occurred once". so, all of them tie for rarest that happened in the dataset.
@@nathankurtz8045 Which is why saying "rare category" makes more sense than "rare move".
@@dominickmaddox9576 they're very rare. Unless you cook them
I feel the same. It's as if one said that the rarest bird is the Green Raven, because 0 ravens of that color have been found.
Is it possible for a green Raven to exist? I mean theoretically, why not? There are plenty of green birds so it's not impossible for a mutation to occur to a raven, and perhaps it did occur once in our planet's long history. But as long as we don't find evidence that a green raven exists or existed, that shouldn't be considered a "rare bird".
I want to see the full game with the double disambiguated bishop non-capture checkmate.
Now that you made this video I’m gonna use all the rarest chess moves multiple times to outdate this video.
I have to imagine that the amount of times these moves were made increased ridiculously after this video was made
UA-cam was aggressively recommending this video to me. Eventually, I decided to watch it and I’m really glad I did.
I love how UA-cam just does that occasionally because the video always turns out to be a banger
[Right hand gets struck by lightning]
[Left hand takes over]
[10:54 Right hand comes back with bandage]
Nice touch of detail! :D
Those hands are so cute and somehow express so much emotion. I love it
really nice little detail: around mionute 10 second 50 (+/- 5 seconds) one hand destroys a glass and a few seconds later the hand has got a band aid thing on it - i really love this detail - nice work
Game idea: have one chess move randomly picked and then try to actually get it in a game. Bonus points if you win.
As opposed to getting the move, how about avoiding a move instead. Make a banning phase pre-game, like [O-O, e4, f4] is forbidden, forcing an unusual opening or mate threats
that sounds like a good idea however like the person in the video said an entire third of moves have never occured in a real game
I loved this minimalistic video style, centered the attention about the content and your content was AMAZING. I didn't even know such moves existed as a chess player
3:36 You son of a gun, I wanted to do this myself!
And you didn't even tell how many unique algebraic chess notations there are?!?!?!?!
I guess I'll keep that for the next video! :D
I'm sure he would have gone over it if it was rare, but what would be a double disambiguated promotion move capture checkmate look like notated?
What a high-quality video, I really appreciated the way in which you treated data and the friendly presentation. A very interesting and well made video!
Well... After this video was released it won't be the rarest move possible
This is an outstanding video. Thank you for taking the time to do this!
I would argue that disambiguated moves are in no way significantly diferent than normal ones. It is an artifact of the notation system, not something inherit to chess. For example, chessbase uses a notation in some portions of the program where moves also record where the piece is coming from. So no ambiguity
I was thinking the same thing. In this video, 2 moves with the notation Bc4 are considered to be the same move, wherever the bishop moves from. But if I see those moves in 2 different games, I certainly wouldn't consider them to be the same move. I wonder what move is rarest if you just consider what piece is being moved and where it moves from and to.
fully agree
Im gonna do a couple of doubly disambiguated bishop capture checkmates tonight
You savage!
14:00 this man is a legend! 🔥
The hand around 11:00 showing up with bandages after smashing the glass is just perfection level attention to detail
It wasn't because the hand punched the glass, that was the left hand
The right hand got struck my lightning before that, hence it being bandaged
i looooove the detail of the bandages on the right hand cursor after it was struck by lightning
13:58 glad he didn't surrender.
I went frame by frame, and the game is semi-reasonable with just a bunch of blunders, and then black goes bishop promote (which does nothing), bishop promote (which does nothing, again), queen promote (still nothing is happening), moves bishop for discovered checkmate. It's almost like he set that up just to do a really weird and hard to replicate move for the purposes of this video,
@@kindlin the thought process behind this video is far more likely to occur than the move itself (authentically)
@@kindlin that could well be the case hikaru and other top players also like to do that if they have won already because it's a rare occurance to be able to do that, i don't know about the blunders tho
It is more common to think about chess moves in terms of their effects on a game (capture, [discovered] check, fork, promotion, stalemate, [forced] repetition, etc) than standard notation (which of course, does capture most effects, but not all). For example, most cases of double check(mate)s might not ascertainable by (standard) notation alone. Neither would "post-missed-castling/en-passant stalemates" (a board position repeats, but with one of the players no longer being able to castle / perform en passant, it becomes a stalemate).
Regardless, this was a really interesting question and notation is probably the best place to start. Your video was enthralling from start to end, and I wouldn't even have these minor criticisms if it hadn't caught my attention as much as it did.
This video was basically what was going through Doctor Strange’s mind during Infinity War.
What a deeply intriguing and well produced video
Very high quality video mate. I like your objective, numerical approach to things.
This is awesome, both the nerdy topic and the very structured way of trying to answer this question. I love this!
That didn't sound so hard until I realized I've lost 900 rating and I've been playing against 200 elo players for 15 hours straight just for a single checkmate💀💀
"200 elo players"
Then you probably played against me 💀
(JK I don't play chess, but if I did, that's the elo I'd expect to have lmao)
@@vlc-cosplayer Bro, why are you watching exoteric chess theory if you don't play the game ahahaha
@@st4vvvBecause it's interesting? Kinda the whole point of science is to easily disseminate information even to those outside the field.
@@Hapetiitti try a game dude, it's worth learning the game!
@@Kyle-gn2ub Of chess? I've been playing since I was like 6 :D I've also tried teaching it to my kids, and I agree, it's a great game!
I went to your channel thinking "This guy makes really good videos I want to watch more" and when I found I had watched all of your videos I was very sad. Please keep making more videos like this, doesn't have to be about chess or language specifically, just interesting nerd stuff.
15:14 it says "doubly disambiguated knight capture checkmate" and not "doubly disambiguated bishop capture checkmate".
I was gonna comment that 🗣️❎☠️😭
@@GivingOthersAMentalBreakdown me 2!
hah, same. thank you for doing so~
Holy crap this one of the best art themes for a educational video I have seen in years
Tacking on "rare move" scenarios feels like crazy joker multipliers in belatro lol
fun fact: saying "fun fact:" before every sentence makes more people read it
13:41 i literally screamed when you showed that game.
Awesome video, loved it!
Holy crap, why doesn’t this have more views? The smoothness in your animations is amazing!
It’s been up 22 hours… give it a chance!
Your videos are always superb. Wish you posted more!
I definitely didn't mean for this to take 6 months since my last video 😅
This was a fun video to follow along with, and made me feel very smart guessing the numbers on entries #2, #3, and #4. It was amusing that immediately after I thought "doesn't it have to happen at least once to be 'rare', really?" you went right into that point...
Your video style is super cozy and satisfying, with all the little gestures and taps feeling really nice
This is part of the next series of videos that will randomly pop up in people's recommended, and I find that really nice.
Thank you! That's the first time I've learned Standard Algebraic Notation appropriately since I started to play chess (nearly 2 years ago).
I'd definitely welcome more videos on chess statistics. The results of this really surprised me, like that fact that around a third of possible moves haven't been played on lichess.
i love this channel! there aren’t enough videos yet for a proper binge but you make wonderful videos!
10:44 the punch of the glass which seems to be the reasoning for the bandaging occurs with the left hand, but the right hand is bandaged
It's from the lightning at 10:25
@@imthatorphan4018 oh, that makes more sense
You don’t upload very often but when you do, the videos are really good.
16:24 we're doomed
Yeah the video about enumerating every possible move would be cool!
i rediscover your channel and you upload again omg
Since i saw nobody else point it out, i will say that your animation style is absolutely beautiful and unique
0:37 "which we already know is rhubarb"
mate i didnt even know rhubarb can even go on pizza
This is exactly the type of video I want to watch on youtube. An in-depth question and answer to something I never even asked, but am instantly fascinated by once it is.
paralogical: this never happened
hikaru and coissant:
They did just not on lichess, so the data there may still have 0’s
*promotes pawn to pawn
so only roughly 30824152725330 (≈ 308 trillion) Bishop moves need to happen for one instance of a double disambiguated bischop capture checkmate
*moves
@@timothymclean u right, thank you
I love the aesthetic of the editing, a very unique style
I'm mostly impressed they let you download 9tb worth of data off their servers lol
It's not hard to hide the fact that a single person was doing the downloading. If they start to bottleneck your rate, you just add a proxy to your download and they suddenly think you're a new person. The easiest way to do the download would've been multiple devices simultaneously downloading it while also hiding the fact that they all reside at the same end destination, and it wouldn't be very difficult to do.
I haven't seen the entire video but from the intro going off of notation intoduces heavy bias. I suspect one of the special disambiguation cases will be the rarest, just because you group together a lot of board state changes with notation, and through disambiguation there are way less board states for for example Nd3e5 than something like xe6 (which could be en passant), while this notation does coincide quite well with unusual moves being rare (double disambiguation nessecitates pawn promotion) some rare moves are still grouped together with really common moves by virtue of not being ambiguous. It makes sense that you use algebraic notation since that is easy data-wise, however it is worth acknowledging that some incredibly weird board states will be obscured here by being grouped together with pretty plain board states.
9:13 there actually isn’t a need for the double disambiguation as ONLY the 6th rank bishop moving could cause checkmate (in the shown scenario, such is possible by arranging one more rook on the right of the other bishop on the 6th rank)
The same is true of the knight move - the knight on the 8th rank can't give mate so there is no need for rank disambiguation.
HOWEVER, I think that formally the decision to require disambiguation of rank and/or file only applies to the pieces that COULD move to a square, and you disambiguate any time it might not be obvious which piece is moving. Then check or mate is added after that. That is, sometimes the rules of notation require the use of disambiguation even when it isn't really needed.
I love the right hand having a bandage after being struck by lightning
0:36 uranium-235 🤤
So 😋 😋 😋 😋 😋 😋
🪃🥋🏹
FINALLY SOMEONE SAID IT
yummy yummyum
Cesium-137 😋😋
For it to be considered rare I think it has to at least happen once. I also think you are making a confusion between the rarest move, and the most complicated notation. In this instance regardless if a move needs to be disambiguated in notation, that move would look the same on the board, even if the notation is different, you are still moving the same knight or bishop. To find the rarest move I think you should look for the most uncommon instances of checkmate, and even the square in which the piece was moved or where the king got checkmated. I think you should also consider moves that end in stalemate, as in some cases that could be even rarer than checkmate.
Totally agree, even though the video is obviously very high quality and a good watch
It also sort of bothered me that so many of the example positions would have been stalemates on the previous turns, which makes me feel like many of the ~30% of unplayed moves are just not actually possible
I honestly found it pretty silly to even consider disambiguations to be different moves, kinda diverts the question into finding the rarest gamestate.
Agreed, disambiguation doesn't necessarily make something a different move. I think standard algebraic notation doesn't actually lend itself well for answering the question at hand, because the same notation can also mean different things in different games, or even in different phases of the same game. Still, interesting video.
@@razorn6247thought the same but all of the examples had a way in which they wouldn’t’ve been stalemate
@@samheasmanwhiteYes but moves are living inside notations so maybe in the future when we invent a new complex language to describe oddly specific moves
1:45 how the fudge is this not stalemate
it's whites turn
it looks like a stalemate lol
@@BadGirlTayTayNowit would be stalemate
the king flew into the rook jail from f6
Assuming you are talking about the rook game(checkmate[#]): the king must have gotten checked previous move from the rooks, it moved itsle to that spot, and then white went and delivered checkmate.
Assuming you're talking about the check(+) game: the king is just not there and the queen is, it's an example and does not need to be realistic.
13:54 The thing with this position is that the final move doesn't really need any disambiguation. Only one of the 3 moves results in mate. The # already provides sufficient disambiguation.