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Subject: Re: Nice mate in 8 for engines!

Author: John Merlino

Date: 07:54:58 12/27/03

Go up one level in this thread


On December 27, 2003 at 08:10:23, Ingo Bauer wrote:

>Hallo
>
>[D]5rk1/p4p1p/6b1/q7/6P1/1P6/Q4p1P/K1R5 b - -
>
>This nice position was reached by YACE against The Baron on ICC. It seems that
>some engines have a problem to find a mate, not to speak of a mate in 8!
>
>
>Engine: ChestUCI Ver.2.8
>by HM / FH
>CPU: AthlonXP2200+
>FEN: 5rk1/p4p1p/6b1/q7/6P1/1P6/Q4p1P/K1R5 b - -
>Suche nach Matt in 12 ... (Hash=512MB)
>8.38 5:21 +M8 33...Qe1 335.3
>Matt in 8 gefunden ! (1 Lösung in 05:44)
>8/08 5:44 +M8 33...Qe1 34.Kb2 Qxc1+ 35.Kxc1 f1Q+ 36.Kb2 Rc8 37.Qa1 Qf6+ 38.Ka2
>Qa6+ 39.Kb2 Rc2+ 40.Kb1 Qf1+ 330.5
>best move: Qa5-e1 time: 5:44.282 min n/s: 330.550 nodes: 113.729.719
>
>
>[Event "ICC 15 10"]
>[Site "Internet Chess Club"]
>[Date "2003.12.27"]
>[Round "-"]
>[White "thebaron"]
>[Black "Sukkubus"]
>[WhiteElo "2374"]
>[BlackElo "2478"]
>[ECO "D45"]
>[Result "0-1"]
>
>1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 e6 5. Nc3 Nbd7 6. Qc2
>Bd6 7. Bd2 O-O 8. O-O-O Qe7 9. e4 dxe4 10. Nxe4 Nxe4
>11. Qxe4 e5 12. Bg5 Nf6 13. Qh4 e4 14. Nd2 Bf5 15. g4 Bg6
>16. Be2 c5 17. Bxf6 gxf6 18. Nb3 cxd4 19. Nxd4 Be5 20. Nb3
>b5 21. Nd4 bxc4 22. Nc6 Bxb2+ 23. Kxb2 Qb7+ 24. Ka1 c3
>25. Rb1 Qxc6 26. Rhc1 e3 27. Bb5 Qd5 28. Rb3 Rab8 29. Qxf6
>Rxb5 30. Qxc3 exf2 31. Qb2 Rxb3 32. axb3 Qa5+ 33. Qa2 Qe1
>{White forfeits on time} 0-1
>
>I do not know why The Baron lost on time.
>
>Ingo

Chessmaster 9000, SKR personality on a P4-2.4, announces Mate in 9 in 2 seconds,
and needs another 6 seconds to see Mate in 8:

Time	Depth	Score	Positions	Moves
0:00	1/3	-11.38	1640		1...Qxa2+ 2.Kxa2 Bd3 3.h4 f1=Q
					4.Rxf1 Bxf1
0:00	1/4	-11.45	3957		1...Qxa2+ 2.Kxa2 Bd3 3.h4 Re8 4.Kb2
					f1=Q 5.Rxf1 Bxf1
0:00	1/4	-11.62	7219		1...Qe1 2.Rxe1 fxe1=Q+ 3.Kb2 Qf2+
					4.Ka3 Qxa2+ 5.Kxa2
0:00	1/5	-18.17	33988		1...Qe1 2.Qb2 Rc8 3.Rb1 Bxb1 4.Qxb1
					Qxb1+ 5.Kxb1 f1=Q+ 6.Ka2 Rc2+ 7.Ka3
					Qa6+ 8.Kb4 Rxh2
0:00	1/6	-20.25	105505		1...Qe1 2.Qb1 Bxb1 3.Kb2 Bd3 4.Rxe1
					fxe1=Q
0:00	1/7	-21.43	184529		1...Qe1 2.Qb1 Bxb1 3.Rxe1 fxe1=Q
					4.h3 Bc2+ 5.Kb2 Qb1+ 6.Kc3 Rc8+
					7.Kd4 Qxb3
0:02	1/8	-Mate09	579569		1...Qe1 2.Kb2 Qxc1+ 3.Kxc1 f1=Q+
					4.Kb2 Rc8 5.Ka3 Qa6+ 6.Kb4 Qxa2
					7.h4 a5+ 8.Kb5 Qxb3+ 9.Kxa5 Ra8#
0:03	1/9	-Mate09	764585		1...Qe1 2.Kb2 Qxc1+ 3.Kxc1 f1=Q+
					4.Kb2 Rc8 5.Ka3 Qa6+ 6.Kb4 Qxa2
					7.h4 a5+ 8.Kb5 Qxb3+ 9.Kxa5 Ra8#
0:04	1/10	-Mate09	1248668		1...Qe1 2.Kb2 Qxc1+ 3.Kxc1 f1=Q+
					4.Kb2 Rc8 5.Ka3 Qa6+ 6.Kb4 Qxa2
					7.h4 a5+ 8.Kb5 Qxb3+ 9.Kxa5 Ra8#
0:08	1/11	-Mate08	2440617		1...Qe1 2.Kb2 Qxc1+ 3.Kxc1 f1=Q+
					4.Kb2 Rc8 5.Ka3 Qa6+ 6.Kb4 Qxa2
					7.h4 Bd3 8.h5 a5#
0:14	2/12	-Mate08	4351630		1...Qe1 2.Kb2 Qxc1+ 3.Kxc1 f1=Q+
					4.Kb2 Rc8 5.Ka3 Qa6+ 6.Kb4 Qxa2
					7.h4 Bd3 8.h5 a5#

jm



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