Thanks for featuring this one! It was a lot of fun to watch!😄 The logic we intended for the upper part of the grid is very weird, but sometimes useful even in normal masyu: inside/outside parity always alternates diagonally across white pearls. Thus we can use the diagonally connected white pearls to prove that the right side of the segment going through r3c8 is inside the loop. Then we immediately know that the r2c8 and r2c10 Mickey Mouse ears cannot turn towards each other, and that gives a lot of further progress. 😄
I found it very useful to colour the loop cells even if I didn't know which way the loop was going and using edge 'x's to help clarify edges that were inside or outside.
General principle with complex loops. If there is one cell that is outside the loop (including starting from the edge of the grid) then if you cross the loop an even number of times, the cell you reach (if it's not loop) will also be outside of the loop. But going along, rather than across a lop segment doesn't count. This doesn't even require a straight line in principle.
I hope you have a great time tomorrow and some of you are able to meet Mark & Simon and each other! Stratford-upon-Avon was quite a few thousand kilometres away for me
"All orthogonally connected groups of non-loop cells must be connected to the edge of the grid. " confused me. I read it that a single non-loop cell was allowed not to be connected to the edge.
Well, a trivial case of an orthogonally-connected group is a single sell (trivially, it not needing to connect to anything means that all cells that need to connect already are). Edge cases are hard in general to wrap one's head around, though.
A less confusing phrasing might be "all non-loop cells must be orthogonally connected to the edge of the grid" edit: wait no that's a bit too oversimplified, because it might imply that you can't have any non-loop cells apart from the edge of the grid
31:04 You are drawing inside box lines, but aren't you able to draw on your outside lines as well? So you should be able to Pen tool the borders of cells make the inside blue or green, and just draw the inside green along the cell walls you know are inside, you should be able to do that with the pen tool.
56:02 for me. I was stuck after the obvious beginning and had to get Simon's insight about the right and left side of the loop (took me about 25 mins to give up and look for advice). After that, a small facepalm not noticing the stranded non-loop cell that Simon finds at 28:01, then smooth sailing after it. I had some experience with the base rules thanks to Simon Thatam's puzzle collection, but the non-loop having to connect outside rule really confused me!
I think the bit of logic at 44:32 might be wrong, because it only disproves the line coming from the white dot on the left going up as being broken, but the black line from the right could take that spot, the same way it is in the final solution you have and it would still work. But this puzzle is complicated and seems easy to make a mistake on so no harm :)
The “1 on non-loop and 2 on turns” checking doesn’t quite work. It says that the digits so far are correct but “the puzzle is not yet finished”. (38:53 for me) 😄
Am i right to assume if there is a grey square next to a piece of loop somewhere the square on the other side of the loop must contain loop as well? for example because r3c3 is grey r3c5 must contain loop, and because r5c5 is grey r5c7 contains loop. If that is the case id be probably be coloring the loop-containing squares in order to keep track of these squares!
63:50, well, I'm surprised I solved this (thanks to rechecking the rules and seeing the cells not on the line had to touch the edge). I've tried puzzles like this before and am ALWAYS awful at them.
I just don’t have the patience to go step by step through a puzzle blind. I noticed the loop in the upper left corner and closed the loop immediately. Leaving the end dangling until I understood where it must go was just too hard.
Thanks for featuring this one! It was a lot of fun to watch!😄 The logic we intended for the upper part of the grid is very weird, but sometimes useful even in normal masyu: inside/outside parity always alternates diagonally across white pearls. Thus we can use the diagonally connected white pearls to prove that the right side of the segment going through r3c8 is inside the loop. Then we immediately know that the r2c8 and r2c10 Mickey Mouse ears cannot turn towards each other, and that gives a lot of further progress. 😄
Oh, wow, this one was both frustrating and wonderful. Haha! Had a good time. Thank you!!
I found it very useful to colour the loop cells even if I didn't know which way the loop was going and using edge 'x's to help clarify edges that were inside or outside.
38:58 - Very happy with that. I spotted the idea quite quickly thank goodness.
General principle with complex loops. If there is one cell that is outside the loop (including starting from the edge of the grid) then if you cross the loop an even number of times, the cell you reach (if it's not loop) will also be outside of the loop. But going along, rather than across a lop segment doesn't count.
This doesn't even require a straight line in principle.
I hope you have a great time tomorrow and some of you are able to meet Mark & Simon and each other!
Stratford-upon-Avon was quite a few thousand kilometres away for me
Yes!! If you get to see Simon and Mark tomorrow- please report back!
"All orthogonally connected groups of non-loop cells must be connected to the edge of the grid. " confused me. I read it that a single non-loop cell was allowed not to be connected to the edge.
Well, a trivial case of an orthogonally-connected group is a single sell (trivially, it not needing to connect to anything means that all cells that need to connect already are). Edge cases are hard in general to wrap one's head around, though.
A less confusing phrasing might be "all non-loop cells must be orthogonally connected to the edge of the grid"
edit: wait no that's a bit too oversimplified, because it might imply that you can't have any non-loop cells apart from the edge of the grid
31:00 You could have used the pen tool to color the borders of the loop cell in different colors to show inside/outside!
You can draw lines between the cells to mark what is inside or outside the loop.
31:04 You are drawing inside box lines, but aren't you able to draw on your outside lines as well? So you should be able to Pen tool the borders of cells make the inside blue or green, and just draw the inside green along the cell walls you know are inside, you should be able to do that with the pen tool.
Currently watching this from the Premier Inn next to the venue - see you tomorrow!
Haha, same here!
56:02 for me. I was stuck after the obvious beginning and had to get Simon's insight about the right and left side of the loop (took me about 25 mins to give up and look for advice). After that, a small facepalm not noticing the stranded non-loop cell that Simon finds at 28:01, then smooth sailing after it.
I had some experience with the base rules thanks to Simon Thatam's puzzle collection, but the non-loop having to connect outside rule really confused me!
I think the bit of logic at 44:32 might be wrong, because it only disproves the line coming from the white dot on the left going up as being broken, but the black line from the right could take that spot, the same way it is in the final solution you have and it would still work. But this puzzle is complicated and seems easy to make a mistake on so no harm :)
The “1 on non-loop and 2 on turns” checking doesn’t quite work. It says that the digits so far are correct but “the puzzle is not yet finished”. (38:53 for me) 😄
It works for me.
Am i right to assume if there is a grey square next to a piece of loop somewhere the square on the other side of the loop must contain loop as well? for example because r3c3 is grey r3c5 must contain loop, and because r5c5 is grey r5c7 contains loop. If that is the case id be probably be coloring the loop-containing squares in order to keep track of these squares!
That deduction is correct with this rule set!
Lovely puzzle, and solve, but there is a definite danger in showing this logic to Marty Sears ...
Nothing would make me happier if others would take this idea and run with it!
63:50, well, I'm surprised I solved this (thanks to rechecking the rules and seeing the cells not on the line had to touch the edge). I've tried puzzles like this before and am ALWAYS awful at them.
Anyone else think the puzzle was some sort of Go or Othello inspired theme when they first looked at it?
Watching this to get sleep 😂 Love from 🇮🇳
Rules: 10:02
Let's Get Cracking: 11:08
And how about this video's Simarkisms?!
Hang On: 10x (14:40, 16:47, 24:55, 24:55, 24:57, 33:07, 39:45, 39:45, 43:24, 48:11)
In Fact: 9x (02:05, 04:08, 08:04, 12:02, 21:47, 21:51, 39:39, 39:39, 45:52)
Weird: 6x (20:31, 33:33, 40:09, 40:09, 44:16, 48:16)
Beautiful: 5x (22:23, 22:51, 32:44, 40:13, 50:14)
Obviously: 5x (03:45, 04:52, 25:52, 27:42, 30:54)
Clever: 4x (21:16, 21:58, 22:01, 49:01)
Cake!: 4x (04:22, 04:54, 05:25, 06:46)
Sorry: 3x (02:49, 04:10, 35:52)
Brilliant: 3x (00:30, 50:53, 50:56)
Bizarre: 3x (42:11, 42:19, 50:49)
What Does This Mean?: 3x (16:30, 30:29, 31:25)
Axiomatically: 2x (13:39, 21:42)
Approachable: 2x (02:07, 11:02)
Surely: 2x (42:25, 46:53)
Puzzling: 2x (01:09, 01:54)
What on Earth: 1x (40:46)
Goodness: 1x (41:12)
Lovely: 1x (27:30)
Incredible: 1x (01:46)
Extraordinary: 1x (06:17)
Shouting: 1x (04:40)
Whoopsie: 1x (22:04)
Sting in the Tail: 1x (47:17)
Ah: 1x (14:57)
Most popular digit and colour this video:
One (19 mentions)
Black (16 mentions)
Antithesis Battles:
Even (4) - Odd (0)
Inside (35) - Outside (15)
Black (16) - White (11)
FAQ:
Q1: You missed something!
A1: That could very well be the case! Human speech can be hard to understand for computers like me! Point out the ones that I missed and maybe I'll learn!
Q2: Can you do this for another channel?
A2: I've been thinking about that and wrote some code to make that possible. Let me know which channel you think would be a good fit!
I think rules start at 7:02 ish on the video section titled rules
I just don’t have the patience to go step by step through a puzzle blind. I noticed the loop in the upper left corner and closed the loop immediately. Leaving the end dangling until I understood where it must go was just too hard.
Thank you for clarifying the line has to move orthogonally. I reread the instructions five times worried I was missing something.
A correlation has arisen after Simon between sudoku variants fans and chocolate cake consumers
❤