BrainKing - Discussion boards (Chess variants (10x8))

Chess variants (10x8)

Sam has closed his piano and gone to bed ... now we can talk about the real stuff of life ... love, liberty and games such as
Janus, Capablanca Random, Embassy Chess & the odd mention of other 10x8 variants is welcome too

For posting:
- invitations to games (you can also use the New Game menu or for particular games: Janus; Capablanca Random; or Embassy)
- information about upcoming tournaments
- disussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position
... speculation on who has an advantage or the benefits of potential moves is not permitted while that particular game is in progress)
- links to interesting related sites (non-promotional)

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Mode: Everyone can post

31. March 2003, 08:16:24

Grim Reaper

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Subject: B + N Mate in 40

Now that I have the database code working (I still need to verify my latest computation) it appears that the longest win is a mate in 40 moves. In 8x8 chess, the longest win is 33 moves.

OK, the contest for guessing the longest win can officially start. Post your guess here. The person who submits the position resulting in the longest number of moves for white to win will receive a stainless steel Gothic Chess mug for the price of shipping.

And here are some stats of the latest run, assuming everything verifies properly when I do the test tomorrow:

Mate in 1 move: 2400 positions
Mate in 2 moves: 1324 positions
Mate in 3 moves: 3247 positions
Mate in 4 moves: 16136 positions
Mate in 5 moves: 49640 positions
Mate in 6 moves: 60757 positions
Mate in 7 moves: 78414 positions
Mate in 8 moves: 58897 positions
Mate in 9 moves: 57946 positions
Mate in 10 moves: 60434 positions
Mate in 11 moves: 110168 positions
Mate in 12 moves: 168635 positions
Mate in 13 moves: 254549 positions
Mate in 14 moves: 294188 positions
Mate in 15 moves: 261796 positions
Mate in 16 moves: 213463 positions
Mate in 17 moves: 171700 positions
Mate in 18 moves: 179002 positions
Mate in 19 moves: 193550 positions
Mate in 20 moves: 275013 positions
Mate in 21 moves: 421860 positions
Mate in 22 moves: 618981 positions
Mate in 23 moves: 743712 positions
Mate in 24 moves: 793462 positions
Mate in 25 moves: 768425 positions
Mate in 26 moves: 880231 positions
Mate in 27 moves: 1022307 positions
Mate in 28 moves: 1397010 positions
Mate in 29 moves: 1849137 positions
Mate in 30 moves: 2444455 positions
Mate in 31 moves: 3131093 positions
Mate in 32 moves: 3661812 positions
Mate in 33 moves: 3506075 positions
Mate in 34 moves: 2590711 positions
Mate in 35 moves: 1388359 positions
Mate in 36 moves: 482325 positions
Mate in 37 moves: 101621 positions
Mate in 38 moves: 13804 positions
Mate in 39 moves: 1788 positions
Mate in 40 moves: 245 positions

31. March 2003, 09:20:43

Fencer

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Subject: Re: B + N Mate in 40

Okay, give me the initial position so I'll be able to prepare the database change for all related games.

31. March 2003, 12:41:39

Felix

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Subject: Re: B + N Mate in 40

Hey! Hey! Hey! No fair giving away the answer to Fencer! If you guys wanna turn some shady deals, you'd better do it behind closed interfaces or whatever, 'cause it makes the rest of us jealous. /Fx/

31. March 2003, 11:09:46

WhisperzQ

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Subject: Re: B + N Mate in 40

Hi GothicChessPro

I am a little confused ... well, a lot actually. Are we to post here our proposed starting positions or are you going to set up one of the 245 40-move alternatives for us to solve by playing you? If we are to post here then I guess we should also post the solution which may have a number ways of getting there.

Cheers from one well-confused whisper :)