In the first puzzle, when you gave the example of pawn move to f5, you cannot deliver the check mate with the queen because Black Will promote and pins it... You have to deliver the mate with bishop :)
I noticed that too. Also, you don’t have to take the knight to deliver mate. Since it’s pinned, you could put your queen anywhere on the back rank and it’s mate.
At 4:28 after Qg7, what's to stop black from playing a1, promoting to Queen, and pinning white's queen to their king? A delaying move, but enough to prevent the mate in 3, unless I'm missing something, which I probably am. Edit: Yep, I was missing something simple. Bxb2 delivers checkmate, as the bishop is guarded by the queen. Thank you oledakaajel and Cesar Figueiredo for point it out. And thank you Micheal Kerolos for letting me know I wasn't the only one to miss this.
In the second puzzle you neglected what happens if black responds to our king move with a rook move, threatening to promote with check if we continue with out knight plan. In this case, whatever file the rook moves to can no longer promote, so we can proceed with the two move mate available on that file.
It depends on where the rook goes, for example if it goes 1. .. Rc1 you do your 2. c7 threat as there is no 2. .. c1->Q anymore and nothing can prevent 3. c8->Q#. There is no 2. .. f1->Q check as there is a knight on c5 Alternatively, if rook goes to, for example, on d1, there is 2. Rxd6 with unpreventable 3. Rd8# as there is a rook on d1 blociking black's d2 pawn from promoting If there's 1. .. Ra1, then 2. Ra4
In problem two, I think a secondary idea is that if the rook moves off the F-file to free the F pawn to promote - which does stop the knight checkmate - any of the other threats on each file will then become an immediate mate because the rook blocks the promoting pawn from saving them. I think that's a pretty elegant idea that I wish had been touched on
Two major misses here. As has been mentioned, the explanation of mate at 4:26 is incomplete because it's not the white queen that issues mate. Black queens his pawn and pins the white queen. Light square bishop issues mate by capturing the knight and protected by the queen. Then, at 5:31, it's correct that the dark square bishop's position is blocking mate, but not for the reason given. Again, the queen doesn't issue mate by capturing the knight. The queen could just as well issue mate by moving to the back rank. But, again, black queens the pawn on the a file and that white queen isn't going anywhere. Rather, the dark square bishop screws things up because it blocks the white queen from protecting the light square bishop's capturing of the knight.
Nelson you didnt cover the lines, in second problem, when rook moves to free the f2 pawn (example: Kf6, Rc1, Ne7, f1Q+). At that point instead of moving Knight we move pawn that is now blocked by Rook (example: Kf6, Rc1, c7, f1Q, c8Q#).
@@Muhammad_Nuruddin I think you're a little confused so I'm gonna skow it down for ya. The moves goes as follows: white's turn, Kf6 then black plays Re1, white plays Rxe5, threatening the mate on e8, black responds with promoting the e pawn to a queen.
Now if you're talking about the specifics of promotion, wikipedia's got you covered. In verbatim: "It occurs immediately when the pawn moves to its last rank , with the player choosing the piece of promotion. The new piece does not have to be a previously captured piece"
In the second problem, moving the King to f6 not only allows Ng6# but also stops black from escaping to e7 once we move the knight and protects the knight when you move it to e7. That puzzle was amazing.
@@mraoz8706 well, if you mean after Kf6, black moves their rook to get a queen on f1, white actually won't move their knight. Black's rook would block the queen promotion on a file. Whichever it is, you set your checkmate threat there. For example if they play Ra1, you play Ra4 and black can't stop Ra8#. If they play Re1, you play Rxe5, if black captures you have Rd8#, if they don't then black can't stop Re8#.
One correction on the continuation after: 1. Bd6 f5 2. Qg7 a8=Q at this position white's queen is pinned on the a1-h8 diagonal so instead 3. Qxb7++ (which doesn't work due to the pin) the correct move should be: 3. Bxb7++
@@fifiwoof1969 now as I double checked he didn't say it but pointed it with arrow (4:28-4:29 and 5:32) and I got the impression that he meant a queen move. But you are right he didn't explicitly said it should be the queen.
in the second puzzle you could play b7, c7 and then c8 queen or rook would do the mate because the c8 queen/rook will be protected so if c1 queen takes it the b7 pawn can take the queen and landing on c8, promoting to a queen/rook and delivering the checkmate
And mate in 3 still stands. If black moves the rook, the knight must stay on f6 blocking the check. White has other pieces to deliver checkmate. Depending on what square the rook moves to, the rook blocks the promotion and the white piece on the file delivers checkmate: Rb1 or Rc1 the pawn on the file queens or rooks, Rd1 white plays Rxd6 then Rd8++, Re1 white plays Rxe5 then if PxRe5, the other rook mates, if it doesn't capture the rook, the rook on e mates, if Ra1 white plays Ra4 delivering mate on a8. It is hard to go over every detail, I hope you point this out if you show this puzzle again.
Solving the 2nd one after seeing you explain the 1st one made that one easy. Solved it immediately even though I'm bad. I didn't notice Qxd4 preventing Ne7 though so I guess I didn't fully solve it...I just got lucky in choosing Ng7 and figured Ne7 also worked.
4:32 QG7 is the winning move not because you are threatening Qx K ++ but because you can take the knight with the bishop since it is protected by the queen.
At 4:30, promoting the black pawn to queen stymies the checkmate attempt by the Queen, at any rate. It would have to be the bishop to move and checkmate.
I love seeing you post more of these, but please try to find a source where the solutions are already given reliably :). In the second problem you completely missed the idea : After the key 1.Kf6, as you pointed out, there are 2 threats (Ng7 and Ne7) and all the queen promotions can only cover one of these threats so they are not actually defensive variants (a black defensive move must parry the threat of the previous whit move to generate a "variant" or "line" - not sure of the english word). Here the defensive black moves are all the rook moves, which all prevent both Ng7 and Ne7 because of f1Q+. But all of them have a default. Here is the solution with the tries (noted with a ? - a try means an attempt that can be refuted by only a single black move)and their refutation (noted with !), Then the key (noted with a !) and then the defensive variants where the 2nd white move is always one of the tries. Tries : 1.Ra4? a1Q! 1.b7? b1Q! 1.c7? c1Q! 1.Rxd6? d1Q! 1.Rxe5? e1Q! Key (with the threats between parenthesis) : 1.Kf6! (Ne7, Ng7) Variants (black defenses, which parry the threats, and white's unique winning answers) : 1...Ra1 2.Ra4 1...Rb1 2.b7 1...Rc1 2.c7 1...Rd1 2.Rxd6 1...Re1 2.Rxe5 Each black defense causes a damage by blocking one of the black pawns, which allows white to mate in the remaining 2 moves by playing the try that was refuted by the promotion of that pawn. Edit : "variation", not "variant" in english, sorry about that :). Also some of you may notice that for the tries, black can also promote in rook, which apparently means there are 2 black moves that parry the threats. But as a convention, in this case, the promotions in rook or queen are not considered as different moves and therefore the white moves are tries (it's also the case if the only black moves parrying the threat are promotions in queen or bishop).
KG8 works as well on the first puzzle. If F6/F5, QxF6. If E5, QxE5. If D4, QxD4. If C3, QxC3. If B2, QD1. If black promotes a pawn there's no way for them to check the king or to stop the checkmate.
on puzzle 2 you aren't clearing the square for the knight, it could go g7, e6. You're moving the king so it is covering both of the squares the knight was covering to prevent the black kings escape.
3.q-G8 and 3. q-F8 are not legal. The Queen is pinned by black queening it's pawn on A1. Also, for the bxB7 move, this works even though a1 still pins her to the king. She's remaining there on G7. A pinned queen can't move anywhere (useful, like the back row) but she CAN defend the bxB7 move by being on the G7 square, preventing the king from taking the bishop on B7. This is why b-C7 doesn't work. It blocks the queen's defense of the B7 square. So b-D6 is the only correct first move. And 3. bxB7 is the only correct finish in the 1....f5 case.
2nd puzzle, at 7:48, Kn to g7, black pawn promotes e1, kn e6 mate (before promoted queen can check white King. Even I'm missing something if blk queen takes white rook e4, other white rook takes queen.
On the 1st puzzle, if black responds with f5, Qg7 is the right move, incase of a1=Q or B, the white queen is pinned and the bishop performs the checkmate by BxNb7, any other move then either the bishop or queen can capture the knight and mate. For sure 1. Bd6 is necessary because with the bishop on c7, the bishop on c6 and queen wouldn't be able to work together. The 2nd puzzle is the first of the puzzles you gave I actually solved before seeing the solution, I'm proud of myself for it. The knight is guarding e7 and g7 with check, when the king moves to f6, the king takes over the guarding of those squares and the knight is free to move. For the first 4 pawns on the left, either knight combination will win. e1=Q is the ONLY move that the knight HAS to play Ng7 then Ne6 because the queen can capture the rook and guard g6 from the knight. If e1 promotes to a minor piece, or if any of the other pawns queen or underpromote, or even d5, Bh2, or any rook move, then either knight combination will work. Although WAIT, WAIT! I just realized that a rook move could require a different combination. Moving the rook can lead to f1=Q or R pinning the knight and maybe Rxd6 then Rd8+ would then be the mate but if the black moved to any square except d1, d1=Q or R could fail the mate. You should of covered that scenario too. I'm going to have to study this one in case of that.
5:30 After Bc7 you pointed out that Qg7 doesn't work because the Bishop blocks the Queen's view of b7, but couldn't you instead go Bc7, and then depending on which pawn move black does put the queen somewhere on the first rank to then go diagonally to the a-file for checkmate?
In the 2nd puzzle, if 1 Kf6 e1=Q, 2 Ng7! Qxe4, 3 Ne6#, instead of 2 Ne7?! Qxe4, 3 Ng6+? Qxg6. The point of the 1 Kf6 move is to plug the escape holes for black’s king while the knight repositions itself for the mate. And if 1 Kf6 Re1 (for example, to allow f1=Q), now 2 Rxe5 … and black no longer has the pawn promotion trick on that file. Same if black moves the rook to a1,b1, c1,or d1; white either pushes the pawn, takes a pawn with a rook, or does a rook slide to a4 to get the mate-in-2 (at that point.)
A Queen is just more useful if black wants to win afterward and not just manage the actual thread. Queen is more logic as there is no reason to underpromote.
so i have no clue HOW the hell i worked it out but the 1st one i KNEW it was the H2 bishop move but i couldn't work out if it was C7 or D6; it just screamed to me that piece was the one to move. it is still a cool puzzle
Great puzzles. In first puzzle why not just move Kg8? It creates a zigzwang. Any move black makes is mate in two. B or c pawn push Qd1 or f1 then A file checkmate. D,e, or f pawn push simply take the pawn with the Q and mate along back rank.
The first problem has an alternative solution. Kg1, moving the king out of the eventual check of a1 and b1 Queen promotions. A pawn move is forced, and any pawn capture by the Queen can be immediately followed by an unstoppable Queen move to either the a file or the first rank. Fortunately, the knight is pinned.
What about Re8 then they move knight to g3, the promote pawn to queen on the F file, check which who’ll delay the mate. Unless I’m seeing something wrong
If the rook moves, it will be blocking one of the other pawns from promoting so instead of white's next move being to move the knight, white will instead move the pawn or rook on the file that the rook has just blocked promotion on instead of the knight. And those moves are all mate in 2. It's sort of touched on at the beginning of the problem.
I can't believe I solved these 2 puzzles and I think it has a lot to do with the fact of watching previous puzzles from Nelson. Hope u bring more of such in the future 🤍
In 2nd puzzle there is even cooler checkmate in 3,Rock from D4 to D1 followed point from b6 to b7,no matter what black plays the 3rd move is either rock D1-H1 checkmate or point B7 queening B8 checkmate
That doesn't make any sense. But assuming you meant: "Rook d4 to a4, then pawn b6 to b7. No matter what black plays the third move is either rook a4 to a8 or pawn b7 to b8 (queen)" black will just follow a4 with a1 and b7 with b1 and you won't be able to mate in three.
Another solution to the first puzzle: Kg8 (moving away the King from the line of attack) if black moves b2 then Qd1 followed by Qa4 (checkmate) if black moves c3 then Qf1 followed by Qa6 (checkmate) if black moves d4 then Qh8 followed by Bxb7 (checkmate) if black moves e5 then Qxe5 followed by Qe8 (checkmate) if black moves f6 (or f5) then Qf6 followed by Qf8 (checkmate)
In the first position, what's wrong with Kg8? On most pawn moves you can take it and deliver checkmate next turn (queen can no longer be pinned) and on b2 you can go Qd1. Edit: Oh, I guess e5 on the second move blocks the bishop.
Yes, that's the line I saw. Didn't see the variation that he showed cause I saw his rook moving to let the f pawn promote with check. After rook moves, then it just looks like mate with rook on a8, pawns queening on b or c file, or rooks on d or e file after taking the pawns.
Bc7 still works, because if you put the queen on the back rank, it’s still mate because the knight is pinned and the pawn prevents the king escaping on the A file. The F pawn moving two will always stop mate in 3 because they will just promote the pawn on the A file and your queen is pinned to your king. Cool puzzles though!
1.Bc7? doesn't work because of 1...f5 2.Qg7 a1=Q, pinning the queen and preventing any bank-rank mate. The solution 1.Bd6! does mate in 3, because after 1...f5 2.Qg7 a1=Q, White has 3.Bxb7 mate.
Very nice puzzle Nelson.. i gave this puzzle for my dad on chess board.. when he move Kg8 first i cant stop him, i was fault on b2 and didnt see e5 can stop the mate 3step.. and i add white knight on g8 so that puzzle can work like the original.. Lol.. This is very nice puzzle and thanks for everyone give me the answer..
In the second puzzle, the white king protects the white bishop, and the bishop prevents the black king escaping from f8 to e8 or g8, while the white knight prevents escape to e7 or g7. The 3 move checkmate is accomplished by Ne7 then Ng6 or Ng7 then Ne6, so while the knight moves e7 and g7 will become briefly unguarded. The white king moving to f6 prevents the black king escaping to e7 or g7, and protects the knight as it moves to e7 or g7 to deliver checkmate on e6 or g6. So, is the king moving from g6 particularly to make room for the knight or to guard the knight and the escape squares? Now as shown, Kf6 .. Ne7 .. Ng6 is checkmate in 3 moves unless the pawn on e2 promotes first, necessitating Kf6 .. Ng7 .. Ne6. So I was wondering if this course is preferable. Well, Ng7 in preparation for Ne6 opens the knight for attack by a black queen on e6 if the black pawns on a2, b2 or c2 queen on the first move.
Unless I'm mistake Queen to F7 doesn't work as when pawn moves to A1 and promotes to Queen or Bishop. The white Queen is pinned?? So once pawn moves from E7 to E5 how does one checkmate in 3 still as no matter where you move your Queen it will be pinned???
Just realised when pawn moves to E5 and Queen takes up the G7 square the next move for checkmate is Bishop takes Knight... as the Bishop is protected by the queen
Nice ones. Just too bad that you missed the whole point in the 2nd one, when black moves the rook from f1, and by blocking one of the other 5 pawns creates a new way for white to check mate.
Excuse me but in the 2nd puzzle can't I just play b7, then after b1=Q play Rb4, then after QxRb4 play RxQb4 then after whatever they play win the game with b8=Q#?
... b2 -> Qd1 ... f5 -> Qf6 Any other black pawn move -> Queen takes pawn All of those lead to mate on move 3 - either Qa4#, Qa5# or mate on the back rank
My brain processed a different solution to the second puzzle. It’s checkmate in four. So it works, just not the solution they had in mind for the puzzle haha 😅
In the first puzzle, when you gave the example of pawn move to f5, you cannot deliver the check mate with the queen because Black Will promote and pins it... You have to deliver the mate with bishop :)
Thank you. That was the coolest of the mates!
I noticed that too. Also, you don’t have to take the knight to deliver mate. Since it’s pinned, you could put your queen anywhere on the back rank and it’s mate.
@@leftykiller8344 you can't because black can queen and pin your queen. Mate has to come from the bishop takes.
Right. At 4:29. I was like, "did Nelson just show the wrong move for checkmate?!"
i know right
At 4:28 after Qg7, what's to stop black from playing a1, promoting to Queen, and pinning white's queen to their king? A delaying move, but enough to prevent the mate in 3, unless I'm missing something, which I probably am.
Edit: Yep, I was missing something simple. Bxb2 delivers checkmate, as the bishop is guarded by the queen. Thank you oledakaajel and Cesar Figueiredo for point it out. And thank you Micheal Kerolos for letting me know I wasn't the only one to miss this.
This what I was thinking
Bxb2 is the actual threat here
You have to leave the queen there, and give the mate with bishop
Team "I missed Bxb2" check in station.
Thank you for asking this question and thank you to those who answered it.
I was also confused.
In the second puzzle you neglected what happens if black responds to our king move with a rook move, threatening to promote with check if we continue with out knight plan. In this case, whatever file the rook moves to can no longer promote, so we can proceed with the two move mate available on that file.
I am glad you saw it too. ;)
yep
It depends on where the rook goes, for example if it goes 1. .. Rc1 you do your 2. c7 threat as there is no 2. .. c1->Q anymore and nothing can prevent 3. c8->Q#.
There is no 2. .. f1->Q check as there is a knight on c5
Alternatively, if rook goes to, for example, on d1, there is 2. Rxd6 with unpreventable 3. Rd8# as there is a rook on d1 blociking black's d2 pawn from promoting
If there's 1. .. Ra1, then 2. Ra4
Exactly, same doubt!
@@forsee2328 oh
In problem two, I think a secondary idea is that if the rook moves off the F-file to free the F pawn to promote - which does stop the knight checkmate - any of the other threats on each file will then become an immediate mate because the rook blocks the promoting pawn from saving them. I think that's a pretty elegant idea that I wish had been touched on
Exactly! but I don't even consider this a "secondary" idea, it's super clever. It's the idea that probably made this puzzle win silver.
So that's why black has a bishop on g1 then.
@@jacobgoldman5780 Actually yeah probably
Two major misses here. As has been mentioned, the explanation of mate at 4:26 is incomplete because it's not the white queen that issues mate. Black queens his pawn and pins the white queen. Light square bishop issues mate by capturing the knight and protected by the queen.
Then, at 5:31, it's correct that the dark square bishop's position is blocking mate, but not for the reason given. Again, the queen doesn't issue mate by capturing the knight. The queen could just as well issue mate by moving to the back rank. But, again, black queens the pawn on the a file and that white queen isn't going anywhere. Rather, the dark square bishop screws things up because it blocks the white queen from protecting the light square bishop's capturing of the knight.
Bxb2 for the first “miss”
Second “ miss” a1!Q pinning the queen to the King and that queen doesn’t going anywhere
Nelson you didnt cover the lines, in second problem, when rook moves to free the f2 pawn (example: Kf6, Rc1, Ne7, f1Q+). At that point instead of moving Knight we move pawn that is now blocked by Rook (example: Kf6, Rc1, c7, f1Q, c8Q#).
1 Kf6 Re1 2 Rxe5 and then checkmate by either Rd8 or Re8 in the next move depending on whether the pawn captures the rook or not.
@@vaughnsuite226 if Rxe5, black would respond with promoting the e pawn to a queen..
@@jeremychristian7 Black played Re1. How exactly would the e pawn promote?
@@Muhammad_Nuruddin I think you're a little confused so I'm gonna skow it down for ya. The moves goes as follows: white's turn, Kf6 then black plays Re1, white plays Rxe5, threatening the mate on e8, black responds with promoting the e pawn to a queen.
Now if you're talking about the specifics of promotion, wikipedia's got you covered. In verbatim: "It occurs immediately when the pawn moves to its last rank , with the player choosing the piece of promotion. The new piece does not have to be a previously captured piece"
4:25 In that position black can promote the a-pawn, pinning white Queen. So it's white's Bishop that delivers mate then.
5:28 Queen to G7 and then to G8 or any other square in the back rank is checkmate!
No, because black will promote on a1 and the queen will be pinned.
In the second problem, moving the King to f6 not only allows Ng6# but also stops black from escaping to e7 once we move the knight and protects the knight when you move it to e7. That puzzle was amazing.
But black can check the king
@@mraoz8706 well, if you mean after Kf6, black moves their rook to get a queen on f1, white actually won't move their knight. Black's rook would block the queen promotion on a file. Whichever it is, you set your checkmate threat there. For example if they play Ra1, you play Ra4 and black can't stop Ra8#. If they play Re1, you play Rxe5, if black captures you have Rd8#, if they don't then black can't stop Re8#.
These got a reason to be first place and second place. In the second one, the Kf6 is so crazy.
5:28 couldnt we just move the quen to c3 like in the e6 pawn?
No, because a1=Q pins the white queen.
In puzzle one, 1.Bc7 still works because after 2.f5, 3.Qg7 works and 4.Qf8# is checkmate
Do you mean 1. Bc7 f5 2. Qg7 ... 3. Qf8#?
It doesn't work because after Qg7 black will promote the pawn on A2 preventing Qf8.
One correction on the continuation after:
1. Bd6 f5
2. Qg7 a8=Q
at this position white's queen is pinned on the a1-h8 diagonal so instead
3. Qxb7++ (which doesn't work due to the pin)
the correct move should be:
3. Bxb7++
Did he say 3.Qxb7? I don't believe he did but feel free to prove me wrong.
@@fifiwoof1969 now as I double checked he didn't say it but pointed it with arrow (4:28-4:29 and 5:32) and I got the impression that he meant a queen move. But you are right he didn't explicitly said it should be the queen.
@@stanimir5F all good, enjoy your day :-)
I wasn't able to figure out the first one, but surprisingly got the second one. Thanks for the great puzzles!
in the second puzzle you could play b7, c7 and then c8 queen or rook would do the mate because the c8 queen/rook will be protected so if c1 queen takes it the b7 pawn can take the queen and landing on c8, promoting to a queen/rook and delivering the checkmate
Not mate in three though.
And mate in 3 still stands. If black moves the rook, the knight must stay on f6 blocking the check. White has other pieces to deliver checkmate. Depending on what square the rook moves to, the rook blocks the promotion and the white piece on the file delivers checkmate: Rb1 or Rc1 the pawn on the file queens or rooks, Rd1 white plays Rxd6 then Rd8++, Re1 white plays Rxe5 then if PxRe5, the other rook mates, if it doesn't capture the rook, the rook on e mates, if Ra1 white plays Ra4 delivering mate on a8. It is hard to go over every detail, I hope you point this out if you show this puzzle again.
Solving the 2nd one after seeing you explain the 1st one made that one easy. Solved it immediately even though I'm bad. I didn't notice Qxd4 preventing Ne7 though so I guess I didn't fully solve it...I just got lucky in choosing Ng7 and figured Ne7 also worked.
4:32 QG7 is the winning move not because you are threatening Qx K ++ but because you can take the knight with the bishop since it is protected by the queen.
At 4:30, promoting the black pawn to queen stymies the checkmate attempt by the Queen, at any rate. It would have to be the bishop to move and checkmate.
I love seeing you post more of these, but please try to find a source where the solutions are already given reliably :). In the second problem you completely missed the idea : After the key 1.Kf6, as you pointed out, there are 2 threats (Ng7 and Ne7) and all the queen promotions can only cover one of these threats so they are not actually defensive variants (a black defensive move must parry the threat of the previous whit move to generate a "variant" or "line" - not sure of the english word). Here the defensive black moves are all the rook moves, which all prevent both Ng7 and Ne7 because of f1Q+. But all of them have a default. Here is the solution with the tries (noted with a ? - a try means an attempt that can be refuted by only a single black move)and their refutation (noted with !), Then the key (noted with a !) and then the defensive variants where the 2nd white move is always one of the tries.
Tries :
1.Ra4? a1Q!
1.b7? b1Q!
1.c7? c1Q!
1.Rxd6? d1Q!
1.Rxe5? e1Q!
Key (with the threats between parenthesis) :
1.Kf6! (Ne7, Ng7)
Variants (black defenses, which parry the threats, and white's unique winning answers) :
1...Ra1 2.Ra4
1...Rb1 2.b7
1...Rc1 2.c7
1...Rd1 2.Rxd6
1...Re1 2.Rxe5
Each black defense causes a damage by blocking one of the black pawns, which allows white to mate in the remaining 2 moves by playing the try that was refuted by the promotion of that pawn.
Edit : "variation", not "variant" in english, sorry about that :). Also some of you may notice that for the tries, black can also promote in rook, which apparently means there are 2 black moves that parry the threats. But as a convention, in this case, the promotions in rook or queen are not considered as different moves and therefore the white moves are tries (it's also the case if the only black moves parrying the threat are promotions in queen or bishop).
KG8 works as well on the first puzzle. If F6/F5, QxF6. If E5, QxE5. If D4, QxD4. If C3, QxC3. If B2, QD1. If black promotes a pawn there's no way for them to check the king or to stop the checkmate.
1.Kg8? b2 2.Qd1 e5!
@@Rocky64 Ah damn so close
Excellent thought, though! You had my brain hurting just a little with that suggestion.
Damn, Kg8 was what I came up with after figuring out that the idea was to avoid a pin from a1=Q
on puzzle 2 you aren't clearing the square for the knight, it could go g7, e6. You're moving the king so it is covering both of the squares the knight was covering to prevent the black kings escape.
In the first puzzle, G8 and F8 are both checkmates B7 wasn’t the only mate, plus black could still get a queen to delay in that line aswell.
The mate is with the bishop, not the queen lol.
3.q-G8 and 3. q-F8 are not legal. The Queen is pinned by black queening it's pawn on A1. Also, for the bxB7 move, this works even though a1 still pins her to the king. She's remaining there on G7. A pinned queen can't move anywhere (useful, like the back row) but she CAN defend the bxB7 move by being on the G7 square, preventing the king from taking the bishop on B7. This is why b-C7 doesn't work. It blocks the queen's defense of the B7 square. So b-D6 is the only correct first move. And 3. bxB7 is the only correct finish in the 1....f5 case.
2nd puzzle, at 7:48, Kn to g7, black pawn promotes e1, kn e6 mate (before promoted queen can check white King. Even I'm missing something if blk queen takes white rook e4, other white rook takes queen.
Thank you so much for these insane and interesting puzzles :-)
love the channel < 3
On the 1st puzzle, if black responds with f5, Qg7 is the right move, incase of a1=Q or B, the white queen is pinned and the bishop performs the checkmate by BxNb7, any other move then either the bishop or queen can capture the knight and mate. For sure 1. Bd6 is necessary because with the bishop on c7, the bishop on c6 and queen wouldn't be able to work together.
The 2nd puzzle is the first of the puzzles you gave I actually solved before seeing the solution, I'm proud of myself for it. The knight is guarding e7 and g7 with check, when the king moves to f6, the king takes over the guarding of those squares and the knight is free to move. For the first 4 pawns on the left, either knight combination will win. e1=Q is the ONLY move that the knight HAS to play Ng7 then Ne6 because the queen can capture the rook and guard g6 from the knight.
If e1 promotes to a minor piece, or if any of the other pawns queen or underpromote, or even d5, Bh2, or any rook move, then either knight combination will work. Although WAIT, WAIT! I just realized that a rook move could require a different combination. Moving the rook can lead to f1=Q or R pinning the knight and maybe Rxd6 then Rd8+ would then be the mate but if the black moved to any square except d1, d1=Q or R could fail the mate. You should of covered that scenario too. I'm going to have to study this one in case of that.
5:30 After Bc7 you pointed out that Qg7 doesn't work because the Bishop blocks the Queen's view of b7, but couldn't you instead go Bc7, and then depending on which pawn move black does put the queen somewhere on the first rank to then go diagonally to the a-file for checkmate?
No, because black can play f5 and after white plays Qe1 black can play either a1 or c3 to delay the mate.
7:08
Move the rook on d4 to c4. This blocks the dark queen while also being protected by the other rook
That’s not mate in 3 though
In the 2nd puzzle, if 1 Kf6 e1=Q, 2 Ng7! Qxe4, 3 Ne6#, instead of 2 Ne7?! Qxe4, 3 Ng6+? Qxg6. The point of the 1 Kf6 move is to plug the escape holes for black’s king while the knight repositions itself for the mate. And if 1 Kf6 Re1 (for example, to allow f1=Q), now 2 Rxe5 … and black no longer has the pawn promotion trick on that file. Same if black moves the rook to a1,b1, c1,or d1; white either pushes the pawn, takes a pawn with a rook, or does a rook slide to a4 to get the mate-in-2 (at that point.)
In Puzzle 1, for Bc7 couldn't you just move the queen to Qg8?
No, because black will promote the pawn on a2.
In the 2nd puzzle, black can promote one of the pawns to a rook, too, and have the same effect; black just has to control the file.
A Queen is just more useful if black wants to win afterward and not just manage the actual thread. Queen is more logic as there is no reason to underpromote.
These puzzle are blown my minds.
8:55 In the second puzzle, why can't White make rxe4?
e1=Q
@@williamsmith8640 after that
4:30 can't the pawn promote pinning the queen in that case?
The mate is with bishop.
@@jaideepshekhar4621 oh, I see it now
Hey Nelson, I have a doubt, In this position 5:30, what happens if he plays a1=Q or a1=B?
I thought the same
Bxb7#
so i have no clue HOW the hell i worked it out but the 1st one i KNEW it was the H2 bishop move but i couldn't work out if it was C7 or D6; it just screamed to me that piece was the one to move. it is still a cool puzzle
at 4:34, for people thinking that the queen would be pinned after a1=Q, then bishop takes knight is checkmate
Yeah, that's what i've been wondering, thanks
In puzzle1 : bishop to c7 still works because in next move queen can go to any back rank and it's mate... Why does it not work?
If White goes Bc7 Black goes f5 and if you try to Qg7 Black will go a1
5:30 if you have the bishop blocking Qg7, would Qc3 work instead for the mate in 3?
if black moves: f5
then after Qc3
black can promote to queen/bishop pinning white's queen on the diagonal.
@@stanimir5F Ah. That's also the reason why white cannot go Qg8# in that case, thanks. Been looking for that.
5:22 you can still move the queen one square up though?? Thats still checkmate
No, because black will promote the pawn to a1.
Great puzzles. In first puzzle why not just move Kg8? It creates a zigzwang. Any move black makes is mate in two. B or c pawn push Qd1 or f1 then A file checkmate. D,e, or f pawn push simply take the pawn with the Q and mate along back rank.
The first problem has an alternative solution. Kg1, moving the king out of the eventual check of a1 and b1 Queen promotions. A pawn move is forced, and any pawn capture by the Queen can be immediately followed by an unstoppable Queen move to either the a file or the first rank. Fortunately, the knight is pinned.
1.Kg8? b2 2.Qd1 e5!
After f5 and Qg7, the point is not to play Qb7# because that gets stopped by a1=Q, which pins the white Queen. The point is to play Bb7#.
What about Re8 then they move knight to g3, the promote pawn to queen on the F file, check which who’ll delay the mate.
Unless I’m seeing something wrong
If the rook moves, it will be blocking one of the other pawns from promoting so instead of white's next move being to move the knight, white will instead move the pawn or rook on the file that the rook has just blocked promotion on instead of the knight. And those moves are all mate in 2. It's sort of touched on at the beginning of the problem.
What's stopping 1.Kg8 in the first puzzle?
Yes u right.. still mate with Kg8 first
1.Kg8? b2 2.Qd1 e5!
@@Rocky64 right, thanks.
4:30 can't the pawn promote, pinning the queen?
Bxb7#
did the judges have to find the solutions themselves?
I can't believe I solved these 2 puzzles and I think it has a lot to do with the fact of watching previous puzzles from Nelson. Hope u bring more of such in the future 🤍
How do I deal with chess addiction?
Hair of the dog. Lol.
In 2nd puzzle there is even cooler checkmate in 3,Rock from D4 to D1 followed point from b6 to b7,no matter what black plays the 3rd move is either rock D1-H1 checkmate or point B7 queening B8 checkmate
That doesn't make any sense. But assuming you meant:
"Rook d4 to a4, then pawn b6 to b7. No matter what black plays the third move is either rook a4 to a8 or pawn b7 to b8 (queen)"
black will just follow a4 with a1 and b7 with b1 and you won't be able to mate in three.
Great puzzle
Hey, in position 1 we are in that diagonal king that black is get a queen and they are going to pin there is 0 way to mate in 3 move in position 1.
Another solution to the first puzzle: Kg8 (moving away the King from the line of attack)
if black moves b2 then Qd1 followed by Qa4 (checkmate)
if black moves c3 then Qf1 followed by Qa6 (checkmate)
if black moves d4 then Qh8 followed by Bxb7 (checkmate)
if black moves e5 then Qxe5 followed by Qe8 (checkmate)
if black moves f6 (or f5) then Qf6 followed by Qf8 (checkmate)
Moving the King doesn't work because black will play either e5 or f6 followed by a1.
@@submanstan7488 Oh, you're right. Thanks
The withe pons on the left side you can push and get a qween
9:38 black can promote a pawn to queen then ng7 and then black's Qa7 delaying mate
In the first position, what's wrong with Kg8? On most pawn moves you can take it and deliver checkmate next turn (queen can no longer be pinned) and on b2 you can go Qd1.
Edit: Oh, I guess e5 on the second move blocks the bishop.
After e5, simply take Qxe5, no?
I suppose Kg8 b2 Qd1 e5 and there is no M1.
@@jaideepshekhar4621 I see, thanks!
But in the second puzzle, what happening if black move the rook abd do a queen with F2 ?
5:25 even if the pawn moves to f5 we can still move to Qc3 and then Qa5 right? what's the problem with that? and its also in 3 moves
Qc3 does not work because black responses a1=Q (or B), pinning white's queen
In puzzle 2 you misspelled the name of the city.
In the third puzzle couldn't the rook move away and let the f pawn check?
Yes, that's the line I saw. Didn't see the variation that he showed cause I saw his rook moving to let the f pawn promote with check. After rook moves, then it just looks like mate with rook on a8, pawns queening on b or c file, or rooks on d or e file after taking the pawns.
There isn't a third puzzle and there isn't an f pawn.
Very interesting
You missed at 4:33...
Pawn can get Queened thus pinning the white queen
Yea but you have mate with the bishop
Bc7 still works, because if you put the queen on the back rank, it’s still mate because the knight is pinned and the pawn prevents the king escaping on the A file. The F pawn moving two will always stop mate in 3 because they will just promote the pawn on the A file and your queen is pinned to your king.
Cool puzzles though!
1.Bc7? doesn't work because of 1...f5 2.Qg7 a1=Q, pinning the queen and preventing any bank-rank mate. The solution 1.Bd6! does mate in 3, because after 1...f5 2.Qg7 a1=Q, White has 3.Bxb7 mate.
@@Rocky64 Yeah, setup my board and ran through it and saw it.
In the second puzzle couldn't you just RxD2 then RxD6 then RD8 Checkmate?
If Rxd2 then black plays its rook to d1 and prevents mate in three.
In the first position it is not 3 moves, black will play f7-f5 and then A2-A1=Q and attach white's queen to white's king
First puzzle king to G8 first is mate too.. no matter wich pawn move is mate with the same pattern.. No need Bishop to D6
Nice thought, but look at 1...b2 or 1...e5 . No mate in three that way.
Pawn B2 queen to D1 then to A4 dont take the pawn.
Pawn E5 queen just take it no pinned anymore. Mate on E8 or B8
Still 3 step..
@@chanzda2194 1.Kg8? b2 2.Qd1 e5! 3.Qa4 is not mate.
@@Rocky64 yes u right.. i didnt see that.. 😊 thankss... nice one..
Very nice puzzle Nelson.. i gave this puzzle for my dad on chess board.. when he move Kg8 first i cant stop him, i was fault on b2 and didnt see e5 can stop the mate 3step.. and i add white knight on g8 so that puzzle can work like the original.. Lol..
This is very nice puzzle and thanks for everyone give me the answer..
Why not BC7 and then QC3 in the first puzzle?
Because pawn to a1.
pawn to f5, then Queen to g7... Now they move parn to a1 queen they have to take then pawn to b2 etc
From g7, you could go to f8 or g8
Not after a1=Q.
In the second puzzle, the white king protects the white bishop, and the bishop prevents the black king escaping from f8 to e8 or g8, while the white knight prevents escape to e7 or g7. The 3 move checkmate is accomplished by Ne7 then Ng6 or Ng7 then Ne6, so while the knight moves e7 and g7 will become briefly unguarded. The white king moving to f6 prevents the black king escaping to e7 or g7, and protects the knight as it moves to e7 or g7 to deliver checkmate on e6 or g6. So, is the king moving from g6 particularly to make room for the knight or to guard the knight and the escape squares?
Now as shown, Kf6 .. Ne7 .. Ng6 is checkmate in 3 moves unless the pawn on e2 promotes first, necessitating Kf6 .. Ng7 .. Ne6. So I was wondering if this course is preferable. Well, Ng7 in preparation for Ne6 opens the knight for attack by a black queen on e6 if the black pawns on a2, b2 or c2 queen on the first move.
Pos2: if Bc7 instead of Bd6, after f5 and Qg7, Q mates on the Back Rank too.
No, because black will promote on a1.
If Bishop to F4 and pawn to E5, then queen takes pawn and still checkmate in 3. With bishop to C2, then still queen to C3.
1. If bishop to f4 and queen to e5 then black promotes on a1 and no checkmate in 3.
2. Bishop can't go to c2. Did you mean g3? e5 stops that too.
Unless I'm mistake Queen to F7 doesn't work as when pawn moves to A1 and promotes to Queen or Bishop. The white Queen is pinned??
So once pawn moves from E7 to E5 how does one checkmate in 3 still as no matter where you move your Queen it will be pinned???
Just realised when pawn moves to E5 and Queen takes up the G7 square the next move for checkmate is Bishop takes Knight... as the Bishop is protected by the queen
How am i doing some if im a beginner
Nice ones. Just too bad that you missed the whole point in the 2nd one, when black moves the rook from f1, and by blocking one of the other 5 pawns creates a new way for white to check mate.
Whats wrong with Be6 in Puzzle 1?? It should work bc Bishop guards the King from Qa1+
...but Pawns can delay checkmate sadge
You mean what's wrong with 1.Be5? It fails to 1...f6! 2.Qc3 fxe5, allowing the king to escape to b8.
2. puzzle: rook to a4 followed by b7 should also to the trick or im missing something?
On 1.Ra4 the black respond 1...,a1=Q and if white plays 2.b7, black plays 2...,b1=Q !
Im so proud,. I saw the move for the 2nd puzzle in Just 30 secs,while im drunk lol
l feeI Iike the guy who created the second one dropped an F-bomb right after birth
Excuse me but in the 2nd puzzle can't I just play b7, then after b1=Q play Rb4, then after QxRb4 play RxQb4 then after whatever they play win the game with b8=Q#?
Yes, but that's mate in four.
At 2'02 why don't why play qc3 and after that qd4 and qa5 thi sis checkmate
If Qc3 then a1=Q.
Surely Kg8 does the job? Similar idea to Be6 and works just as well
... b2 -> Qd1
... f5 -> Qf6
Any other black pawn move -> Queen takes pawn
All of those lead to mate on move 3 - either Qa4#, Qa5# or mate on the back rank
@@SteveThePster 1.Kg8? b2 2.Qd1 e5!
On the first puzzle QG7 fails to A1 as it still pins the king
You missed that Bb7 is checkmate
Nelson made a mistake! Time to pile on at 4:23 and 5:24 :D
*Why you don´t correct your mistake?*
My brain processed a different solution to the second puzzle. It’s checkmate in four. So it works, just not the solution they had in mind for the puzzle haha 😅
on 2nd one, you can just play Kg7 before moving king making things easier, cant you? idk im rating 450 so just correct me please.
for the second one you have rook to d6 then e6 then e8
1.Rd6? d1=Q! 2.Re6 Qd8, no mate in 3.
5:33 Queen on any square od 8 rank Is mate
Not after the pin, 2...a1=Q.
4:30 a1=B pins the queen.
But Bb7 is mate.
Nelson made an error there (move the bishop not the queen).
In the first puzzle, Kg7 actually ALMOST works
So far I figured out first 2 before you explained....
The g7 on problem 1 is wrong because a1 promote to queen ruin your plan
Bxb7#
Nice
In 4:28 a1q
4:22 what if he promoted his pawn in the next move ?
This will pin our queen
It won't be a checkmate in 2🙃
Try reading other comments before posting. 2.Qg7 a1=Q 3.Bxb7 mate.
@@Rocky64
Yeah I see
But in the video he said that the queen will deliver the mate not the bishop
cool!
If you know which theme is this please comment
woot, I found the 2nd one
not really a fan of the first one tbh, as you still win most of the time, just not in 3 moves...