Author: Pete Galati
Date: 16:47:49 01/17/01
Go up one level in this thread
On January 17, 2001 at 19:10:34, Paul wrote: >On January 17, 2001 at 19:05:09, Dann Corbit wrote: > >>On January 17, 2001 at 18:59:19, Vincent Vega wrote: >> >>>On January 17, 2001 at 17:11:45, leonid wrote: >>> >>>>Hi! >>>> >>>>Position below contain mate. If you can find shortest mate that 11 moves (my >>>>selective search can't find here below 11 and frute force search is too time >>>>expensive), please say what you found. >>>> >>>>3k4/2bqb3/2qnq3/2nrn3/1Qqnq3/NBNq4/PPP2pR1/KB4R1 black to go. >>>> >>>>Leonid. >>> >>>This position is illegal. >> >>All right, leonid. You heard the man. You're under arrest! >>;-) >> >>Since neither king is in check, I am curious why the position is not to be found >>in the game of check. It seems to add up OK to me. > >For black there are 5 Queens, 1 Bishop and 2 Knights extra. That's >possible by 8 promo's ... but there's still a black pawn? > >But why spoil the fun, it's a nice position :) > >Paul All illegal arguements aside, this is the first Checkmate Junior6 spit out, about 64mb hash: 1...Qxb4! 2.Rg8+ Ne8 3.Ncb5 Qcxb5 4.R8g3 Ncxb3+ 5.axb3 Qxa3+ 6.bxa3 Nxc2+ 7.Bxc2 fxg1Q+ 8.Rxg1 Qc3+ 9.Kb1 Qexc2# -+ (-#9) Depth: 11 00:01:11 35130kN 1...Qxb4 2.Rg8+ Ne8 3.Ncb5 Qcxb5 4.R8g3 Ncxb3+ 5.axb3 Qxa3+ 6.bxa3 Nxc2+ 7.Bxc2 fxg1Q+ 8.Rxg1 Qc3+ 9.Kb1 Qexc2# -+ (-#9) Depth: 11 00:01:25 40493kN I don't have a clue if this is the shortest posible mate. Pete
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