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Up Topic The Rybka Lounge / Computer Chess / A Mate in 6 - difficult/impossible for some top engines
- - By MrKris (**) Date 2019-05-02 20:12
From a problem at: http://talkchess.com/forum3/viewtopic.php?f=2&t=70638


[Event "Mate in 6 problem"]
[Site "TalkChess.com"]
[Date "2019.05.02"]
[Round "?"]
[White "Bikjump Win64 (is 1-core), compared with"]
[Black "6 others at 1-cpu AMD PhII X6 for 6.5 hours"]
[Result "1-0"]
[Time "10:31:10"]
[TimeControl "0+20"]
[SetUp "1"]
[FEN "b4bN1/4p1p1/1Q1p2K1/q1np4/3p1Rnk/6pr/4Rppr/3N4 w - - 0 1"]
[Termination "normal"]
[PlyCount "11"]
[WhiteType "program"]
[BlackType "program"]

{12/38 plies, 01:16 (1 min. 17 secs.), +M6} 1. Nh6 gxh6 2. Re5 dxe5 3. Qf6+
exf6 4. Ne3 dxe3 5. Rf5 g1=Q  6. Rh5# {1st Mate or last 'print' for others, all stopped at 6.5 hours:
(Raubfisch X40a2, 29:56,  +M6 1.Nh6 ...)
(Houdini-6.03std, 30/77, 40:54, +M6 1.Nh6 ...)
(Hannibal-1.7, 31, 5:29:23, +M5 meant after its move 1.Nh6 ...)
(Ethereal_11.25, 38/113, 6:17:35, -34.57 1.Qxa5??)
(Komodo 12.2.2, 34-, 3:26:44, -35.95 1.Qxa5??)
(ShashChess 8.0, 6:24:59 -but previous output at 00:04 only-, -12.67 1.Qb8??)
} 1-0


All 6-cores individually, Arena restarted before each:
Fire 7.1 instantly!! @ ply 10
Andscacs_0.94 @ 00:11 (min:sec)
Xiphos-0.5.3 @ 00:13
Laser-1.5 @ 00:32
Stockfish_19042720 @ 01:54 29/52 plies
Stockfish_19032417 @ 2:51 30/57
McCain-X3 @ 03:27
Old 6-cpu engines often did extremely well:
Spike 1.4 @ 00:02!
Sting-sf-4 @ 00:02!
Houdini_15a_free @ 00:03!
Hermann 2.8 @ 00:06!
Komodo-tcecr @ 00:24
RobboLito 0.21Q @ 02:20
AnMon 5.75 (1-core) 02:13
Attachment: 2may2019-POST.txt - Arena PV's in text: (7k)
Parent - By sylvain.renard.27 (**) Date 2019-05-05 15:40 Upvotes 1
Hello,
very very old engine : Capture (2002)  1 Core :
Nouvelle partie
b4bN1/4p1p1/1Q1p2K1/q1np4/3p1Rnk/6pr/4Rppr/3N4 w - - 0 1


Analysis by Capture R01 - 2002:

1.Dxa5 f1D 2.Dd2 Cb3 3.Txf1 Cxd2 4.Tg1
  -+ (-15.91 ++)  Profondeur: 9   00:00:01  2684kN
1.Dxa5 f1D 2.Dd2 Ce6 3.Txe6 g1D 4.Txf1 Dxf1
  -+ (-15.26)  Profondeur: 9   00:00:01  3727kN
1.Dxa5 f1D 2.Dd2 Ce6 3.Txe6 g1D 4.Txf1 Dxf1
  -+ (-14.76 ++)  Profondeur: 10   00:00:04  11702kN
1.Dxa5 Fc6 2.Txf8 Cd7 3.Tf5 Cf8+ 4.Txf8 g1D
  -+ (-13.06)  Profondeur: 10   00:00:07  19344kN
1.Dxa5 Fc6 2.Txf8 Cd7 3.Tf5 Cde5+
  -+ (-13.52)  Profondeur: 11   00:00:15  42187kN
1.Ch6
  -+ (-13.44 ++)  Profondeur: 11   00:00:23  64106kN
1.Ch6
  -+ (-12.52 ++)  Profondeur: 11   00:00:23  64111kN
1.Ch6 gxh6 2.Te5 dxe5 3.Df6+ exf6 4.Ce3 dxe3 5.Tf5 f1D 6.Th5#
  +- (#6)  Profondeur: 11   00:00:23  64431kN
1.Ch6 gxh6 2.Te5 dxe5 3.Df6+ exf6 4.Ce3 dxe3 5.Tf5 f1D 6.Th5#
  +- (#6)  Profondeur: 11   00:00:23  64431kN

(,  05.05.2019)

Best regards,
Sylvain
Up Topic The Rybka Lounge / Computer Chess / A Mate in 6 - difficult/impossible for some top engines

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