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Subject: Re: A related, but different, puzzle for your program

Author: Ernst Walet

Date: 03:35:25 09/29/01

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CM8K needs 37 seconds on a PIII-500E, SS=10.

Time	Depth	Score	Positions	Moves
0:00	1/4	-6.42	11302		1. e7 Re8 2. Bb2 Qxc2 3. Rf1
0:00	1/5	-5.43	19504		1. e7 Re8 2. Bb2 Qa5 3. Rf1 Qb4
0:01	1/6	-5.52	42883		1. e7 Re8 2. Bb2 Qa5 3. Rf1 Qb4
					4. Bxe5 Qxe7
0:03	1/6	-4.54	199513		1. Bh6 gxh6 2. e7 Qa3 3. exf8=Q+
					Qxf8 4. Rf1 Qg7 5. Qh5 Qe7 6. Qxh6
0:07	1/7	1.14	415679		1. Bh6 gxh6 2. e7 Qa3 3. exf8=Q+
					Qxf8 4. Rf1 Qxf1+ 5. Bxf1 Na6 6.
					Qh5 b5 7. Qxe5+ Kg8 8. Qe8+ Kg7
					9. Bd3
0:13	1/8	1.46	889451		1. Bh6 gxh6 2. e7 Qa3 3. exf8=Q+
					Qxf8 4. Rf1 Qxf1+ 5. Bxf1 Na6 6.
					Qf5 Kg8 7. Bd3 Nc5 8. Qxh7+ Kf8
					9. Qxh6+ Ke7 10. Kh2
0:34	1/8	Mate14	2202643		1. e7 Qe1+ 2. Kh2 Qf2 3. Bh6 gxh6
					4. exf8=Q+ Qxf8 5. Rf1 Qd8 6. Rf7
					Qg5 7. Qe4 Qf4+ 8. Rxf4 d6 9. Rf8+
					Kg7 10. Rg8+ Kf6 11. Qh4+ Kf5 12.
					Rf8+ Kg6 13. Qf6+ Kh5 14. Bf7#
0:37	1/9	Mate12	2504158		1. e7 Re8 2. Bh6 gxh6 3. Rf1 Qa3
					4. Rf7 Qc1+ 5. Kh2 Qg5 6. Qe4 Qf4+
					7. Rxf4 d5 8. Rf8+ Kg7 9. Qxe5+
					Kg6 10. Qf6+ Kh5 11. Be2+ Bg4 12.
					Bxg4#
0:50	1/10	Mate12	3597807		1. e7 Re8 2. Bh6 gxh6 3. Rf1 Qa3
					4. Rf7 Qc1+ 5. Kh2 Qg5 6. Qe4 Qf4+
					7. Rxf4 d5 8. Rf8+ Kg7 9. Qxe5+
					Kg6 10. Qf6+ Kh5 11. Be2+ Bg4 12.
					Bxg4#



Ernst.











On September 27, 2001 at 18:08:25, Roy Eassa wrote:

>How long before your program sees that White is winning with either e7 or Bh6?
>Take any reasonable definition of "winning", e.g., ahead by at least 2 pawns.
>
>[D]rnb2r1k/pp1p2pp/2p1P3/4p3/2B3Q1/2q4P/P1P3P1/1RB4K w - - 0 1
>
>
>On my Athlon 1.2, Fritz 6 took over 11 minutes, whereas Gambit Tiger 2
>Aggressive took about 4 minutes.



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