Author: Laurence Chen
Date: 09:43:26 12/15/98
Go up one level in this thread
On December 15, 1998 at 12:31:46, Laurence Chen wrote: >On December 15, 1998 at 09:06:23, Thom Perry wrote: > >>MCP8 will not play 12. Bxh7+ because initially the program believes that black >>is about a point ahead after the bishop sacrifice. Following is the analysis >>which I ran twice to see whether MCP8 would deviate the second time around with >>the learning enabled: >> >> >>M-Chess Pro 8.0, P200-S, 96MEG EDO, Tyan Tomcat motherboard >>3min./move, learning enabled >> >> White Black Depth Score Analysis >> ------------------------------------ >> >> 12. .... Kxh7 8) - 0.53 Kg8xh7 Nf3-g5+ Kh7-g6 Qd1-g4 f7-f5 >> Qg4-g3 f5-f4 Qg3-g4 e6-e5 Ng5-e6+ >> Kg6-f6 >> 1:57:00 1:58:21 >> 13. Ng5+ 7) - 0.52 Nf3-g5+ Kh7-g6 Qd1-g4 f7-f5 Qg4-g3 >> f5-f4 Qg3-g4 e6-e5 Ng5-e6+ Kg6-f6 >> 13. .... Kg6 8) - 0.69 Kh7-g6 Qd1-g4 f7-f5 Qg4-g3 f5-f4 >> e3xf4 Ne7-f5 Qg3-g4 >> 1:55:44 1:54:57 >> 14. Qg4 7) - 0.35 Qd1-g4 f7-f5 Qg4-g3 f5-f4 e3xf4 >> Ne7-f5 Qg3-g4 >> 14. .... f5 8) - 0.00 f7-f5 Qg4-g3 f5-f4 e3xf4 Ne7-f5 >> Qg3-g4 Nf5-h6 Qg4-g3 Nh6-f5 >> 1:52:03 1:51:50 >> 15. Qg3 8) - 0.00 Qg4-g3 f5-f4 e3xf4 Ne7-f5 Qg3-g4 >> Nf5-h6 Qg4-g3 Nh6-f5 >> 15. .... f4 7) - 0.00 f5-f4 e3xf4 Ne7-f5 Qg3-g4 Nf5-h6 >> Qg4-g3 Nh6-f5 >> 1:48:49 1:49:44 >> 16. exf4 7) - 0.00 e3xf4 Ne7-f5 Qg3-g4 Nf5-h6 Qg4-g3 >> Nh6-f5 >> 16. .... Nf5 7) - 0.00 Ne7-f5 Qg3-g4 Nf5-h6 Qg4-g3 Nh6-f5 >> 1:46:36 1:46:48 >> 17. Qg4 8) - 0.00 Qg3-g4 Nf5-h6 Qg4-g3 Nh6-f5 >> 17. .... Nh6 7) - 0.00 Nf5-h6 Qg4-g3 Nh6-f5 >> 1:43:21 1:39:26 >> 18. Qg3 8) + 0.00 Qg4-g3 Nh6-f5 >> 18. .... Nf5 8) - 0.00 Nh6-f5 Qg3-g4 >> 1:41:02 1:37:06 >> 19. Qg4 9) + 0.00 Qg3-g4 Nf5-h6 >> 19. .... Nh6 9) - 0.00 Nf5-h6 Qg4-g3 >> 1:37:25 1:34:00 >> 20. Qg3 9) + 0.00 Qg4-g3 Nh6-f5 >> 20. .... Nf5 9) + 0.00 Nh6-f5 >> 1:33:02 1:31:00 >> >> Game was drawn by 3rd repetition! Let's try again to see whether MCP8 >> has learned anything from the first iteration. >> >> White Black Depth Score Analysis >> ------------------------------------ >> >> 12. .... Kxh7 8) - 0.53 Kg8xh7 Nf3-g5+ Kh7-g6 Qd1-g4 f7-f5 >> Qg4-g3 f5-f4 Qg3-g4 e6-e5 Ng5-e6+ >> Kg6-f6 >> 2:00:00 1:58:21 >> 13. Ng5+ 7) - 0.52 Nf3-g5+ Kh7-g6 Qd1-g4 f7-f5 Qg4-g3 >> f5-f4 Qg3-g4 e6-e5 Ng5-e6+ Kg6-f6 >> 13. .... Kg6 8) - 0.69 Kh7-g6 Qd1-g4 f7-f5 Qg4-g3 f5-f4 >> e3xf4 Ne7-f5 Qg3-g4 >> 1:58:44 1:55:14 >> 14. Qg4 7) - 0.35 Qd1-g4 f7-f5 Qg4-g3 f5-f4 e3xf4 >> Ne7-f5 Qg3-g4 >> 14. .... f5 8) - 0.00 f7-f5 Qg4-g3 f5-f4 e3xf4 Ne7-f5 >> Qg3-g4 Nf5-h6 Qg4-g3 Nh6-f5 >> 1:55:03 1:52:07 >> 15. Qg3 8) - 0.00 Qg4-g3 f5-f4 e3xf4 Ne7-f5 Qg3-g4 >> Nf5-h6 Qg4-g3 Nh6-f5 >> 15. .... f4 7) - 0.00 f5-f4 e3xf4 Ne7-f5 Qg3-g4 Nf5-h6 >> Qg4-g3 Nh6-f5 >> 1:51:48 1:50:00 >> 16. exf4 7) - 0.00 e3xf4 Ne7-f5 Qg3-g4 Nf5-h6 Qg4-g3 >> Nh6-f5 >> 16. .... Nf5 7) - 0.00 Ne7-f5 Qg3-g4 Nf5-h6 Qg4-g3 Nh6-f5 >> 1:49:36 1:47:05 >> 17. Qg4 8) - 0.00 Qg3-g4 Nf5-h6 Qg4-g3 Nh6-f5 >> 17. .... Nh6 7) - 0.00 Nf5-h6 Qg4-g3 Nh6-f5 >> 1:46:21 1:39:44 >> 18. Qg3 8) + 0.00 Qg4-g3 Nh6-f5 >> 18. .... Nf5 8) - 0.00 Nh6-f5 Qg3-g4 >> 1:44:02 1:37:25 >> 19. Qg4 9) + 0.00 Qg3-g4 Nf5-h6 >> 19. .... Nh6 9) - 0.00 Nf5-h6 Qg4-g3 >> 1:40:25 1:34:19 >> 20. Qg3 9) + 0.00 Qg4-g3 Nh6-f5 >> 20. .... Nf5 9) + 0.00 Nh6-f5 >> 1:36:02 1:31:18 >> >>Same result. >Thanks Thom Perry for the analysis, it is the same with Junior 5. Well it is >Black who forces a draw by repitition. After 17. Qg4, every other Black move >gives White the advantage with exception of 17. ... Nh6. >r1bq1r2/pp4p1/4p1k1/2n2nN1/5PQ1/2N5/PP3PPP/R4RK1 b - - 0 17 > >Analysis by Junior 5.0: > >= (0.00): 17...Nh6 18.Qg3 >+- (1.72): 17...Kf6 18.Rad1 Qb6 19.Nh7+ Kf7 20.Nxf8 Kxf8 21.Qg6 >+- (1.83): 17...Kh6 18.b4 Qd3 19.Rac1 Nd7 20.Nxe6 Rf7 21.Rfd1 Qc4 22.Ng5 Rf8 >23.Rd5 >+- (2.41): 17...Qe7 18.Nxe6+ Kh7 19.Nxf8+ Qxf8 20.Rae1 Nh6 21.Qg3 Ne6 22.Re4 Qc5 >+- (2.96): 17...Nd4 18.Nxe6+ Kf6 19.Qxg7+ Kxe6 20.Rfe1+ Kd6 21.Rad1 Qf6 22.Rxd4+ >Kc6 23.Qxf6+ Rxf6 24.Re7 Bf5 >+- (3.38): 17...Qe8 18.Nxe6+ Kh7 19.Nxc5 Qg6 20.h3 Qxg4 21.hxg4 Nh4 22.f5 Re8 Thom could you check how would MCP8 proceed after 18. Qh4. Below is Junior 5 analysis. New position r1bq1r2/pp4p1/4p1kn/2n3N1/5PQ1/2N5/PP3PPP/R4RK1 w - - 0 18 Analysis by Junior 5.0: = (0.17): 18.Qh4 Nd3 19.Rad1 e5 20.fxe5 = (0.00): 18.Qg3 Nf5 ³ (-0.49): 18.Qf3 Qxg5 19.fxg5 Rxf3 20.gxf3 Kxg5 21.Rfd1 Kf4 22.b4 Na6 23.Rd3 Nf5 24.Ne2+ Ke5 µ (-1.12): 18.Qe2 Rxf4 19.Nh3 Rf5 20.Rad1 Qh4 21.f4 a5 22.Rfe1 Kh7 µ (-1.17): 18.Qh3 Rxf4 19.Nf3 Kh7 20.Rad1 Bd7 21.Qg3 Rg4 22.Qe5 Rc8 23.Rfe1 -+ (-1.42): 18.Qd1 Qxd1 19.Raxd1 Rxf4 20.Nf3 Nf7 21.Rfe1 Kh7 22.Nd4
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