Author: Jon Dart
Date: 19:04:03 01/29/00
Go up one level in this thread
On the 1st position. Arasan's score goes negative at ply 11, but not by much. I'm not sure if there is a defense there or maybe all the checks and extensions are just pushing the pain off the horizon (probably the latter). ply 1. b6+ 0 seconds. score: -2.89 2 nodes. ply 1. Rc5 0 seconds. score: -2.75 8 nodes. ply 1. Rc5 0 seconds. score: -2.75 33 nodes. ply 2. b6+ 0 seconds. score: -2.89 50 nodes. ply 2. a7 0 seconds. score: -2.13 405 nodes. ply 2. a7 0 seconds. score: 1.25 603 nodes. ply 3. a7 0 seconds. score: 1.25 937 nodes. ply 3. a7 1 seconds. score: 0.42 80797 nodes. ply 4. b6+ 1 seconds. score: 1.05 83040 nodes. ply 4. b6+ 1 seconds. score: 2.53 83432 nodes. ply 5. b6+ 1 seconds. score: 2.53 85355 nodes. ply 5. b6+ 1 seconds. score: 1.70 91046 nodes. ply 6. Rxe5 2 seconds. score: 1.61 143229 nodes. ply 6. Rxe5 2 seconds. score: 1.61 145894 nodes. ply 7. Rxe5 3 seconds. score: 1.94 254988 nodes. ply 8. Rxe5 9 seconds. score: 1.58 671775 nodes. ply 9. Rxe5 18 seconds. score: 1.58 1344466 nodes. ply 9. b6+ 26 seconds. score: 0.88 1991576 nodes. ply 9. b6+ 27 seconds. score: 0.88 2143929 nodes. ply 10. b6+ 42 seconds. score: 0.88 3356153 nodes. ply 11. b6+ 134 seconds. score: 0.88 10762624 nodes. ply 11. b6+ 263 seconds. score: -0.22 21258851 nodes. ply 12. b6+ 300 seconds. score: -0.22 24347463 nodes. 81152.8 nodes/second. 5654957 regular nodes, 18692506 quiescence nodes. 5244878 searches of hash table, 1296855 successful (24 percent). 499999 hash entries inserted, 969461 entries replaced, 3087251 inserts failed. search: b6+ 300 seconds. score: -0.22 24347463 nodes. ++ correct b6+ Ka4 Rxe5 Qh1 Rxf5 Qh2+ Ke1 Qg1+ Kd2 Qd4+ Bd3 Rb2+ Kc1 Qc3+ On the 2nd position, it likes Rxg7+ but only gives a score of +0.88. Something is wacky if you were getting +2. ply 1. Rxb1 0 seconds. score: -3.63 2 nodes. ply 1. Rxb1 0 seconds. score: -0.30 39 nodes. ply 2. Rxb1 0 seconds. score: -0.30 298 nodes. ply 3. Rxb1 0 seconds. score: -0.23 1097 nodes. ply 4. Rxb1 0 seconds. score: -0.31 4354 nodes. ply 5. Rxb1 0 seconds. score: -0.48 17688 nodes. ply 6. Rxg7+ 0 seconds. score: 0.14 26307 nodes. ply 6. Rxg7+ 0 seconds. score: 1.64 36226 nodes. ply 7. Rxg7+ 1 seconds. score: 1.64 84263 nodes. ply 7. Rxb1 2 seconds. score: -0.28 144308 nodes. ply 7. Rxb1 2 seconds. score: -0.28 174156 nodes. ply 8. Rxg7+ 3 seconds. score: 0.34 261838 nodes. ply 8. Rxg7+ 5 seconds. score: 1.45 359267 nodes. ply 9. Rxg7+ 12 seconds. score: 1.48 924513 nodes. ply 10. Rxg7+ 26 seconds. score: 1.38 2116329 nodes. ply 11. Rxg7+ 90 seconds. score: 0.88 7383494 nodes. ply 12. Rxg7+ 152 seconds. score: 0.88 12609737 nodes. ply 13. Rxg7+ 300 seconds. score: 0.88 24420946 nodes. 81397.7 nodes/second. 5779819 regular nodes, 18641127 quiescence nodes. 5316305 searches of hash table, 1503675 successful (28 percent). 499999 hash entries inserted, 1052518 entries replaced, 2989714 inserts failed. search: Rxg7+ 300 seconds. score: 0.88 24420946 nodes. ++ correct Rxg7+ Kb6 Rb7+ Ka5 b6+ Ka4 Rxe5 Bc8 Re8 Bxb7 axb7 Rxb6 Ra8+ Kb3 b8=Q Rxb8
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