Author: Mridul Muralidharan
Date: 00:56:52 12/16/03
Go up one level in this thread
On December 15, 2003 at 16:23:15, Dieter Buerssner wrote: >[D] 5k2/1R4p1/5p2/4p2p/1p2P2P/r4P2/PK4P1/8 b - - > >This is from a game between Ruffian-Yace in the "CSS-Online-Masters" (time >control 60 15). > >I think, after Ra4, white cannot make progress, and the game will end in draw. >Yace played Re3? instead (with 0.0 score). Are there engines, that show in >reasonable time a big score difference between Re3 and Ra4?. I believe Re3 loses >by force. For example Re3 Rxb4 Re2 Kb3 Rxg2?! (possibly Re3 instead gives more >resistance) a4. > >It is not a real good test position, because engines can show for a long time >the same score for Ra4 and Re3, and the chosen move might be pure luck. >Therefore also the question for scores after those moves. > >Regards, >Dieter Hi Dieter, Mess dislikes Re3 by 0.4 atleast. Here is its analysis : From the above position : D:\chess\suites>e:messchess solve -rf -sl -time 900 test_pos.epd Trying to solve test suite test_pos.epd with 900.00 secs per test. 2 -64 2 81 C:2 ,T:0 CR:0 TR:0 Ra3-a4 Kb2-b3 3 -29 2 602 C:3 ,T:0 CR:1 TR:0 Ra3-a4 Pg2-g3 Pg7-g5 4 -64 3 1601 C:19 ,T:0 CR:11 TR:0 Ra3-a4 Pg2-g3 Pg7-g5 Kb2- b3 5 -39 6 3804 C:35 ,T:1 CR:19 TR:0 Ra3-a4 Pg2-g3 Pg7-g6 Pf3- f4 Kf8-e8 Pf4xe5 Pf6xe5 6 -42 13 7930 C:52 ,T:1 CR:28 TR:0 Ra3-a4 Pg2-g3 Pg7-g5 Ph4x g5 Pf6xg5 Pg3-g4 Ph5xg4 Pf3xg4 7 -47 28 20598 C:147 ,T:10 CR:74 TR:1 Ra3-a4 Pg2-g3 Pg7-g6 Pf3- f4 Pe5xf4 Pg3xf4 Pf6-f5 Pe4xf5 Pg6xf5 8 -50 58 45402 C:291 ,T:19 CR:138 TR:1 Ra3-a4 Pg2-g3 Pg7-g6 Pf3- f4 Pf6-f5 Rb7-b8 Kf8-f7 Pe4xf5 Pe5-e4 Pf5xg6 Kf7xg6 9 -47 116 98249 C:511 ,T:35 CR:281 TR:3 Ra3-a4 Pg2-g3 Pg7-g6 Pf3- f4 Pf6-f5 Pe4xf5 Pe5xf4 Pg3xf4 Pg6xf5 10 -36 306 264404 C:1160 ,T:138 CR:715 TR:11 Ra3-a4 Pg2-g4 Pg7-g6 Rb7- d7 Ra4-a3 Pg4xh5 Pg6xh5 Rd7-b7 Ra3xf3 Rb7xb4 11 -35 605 540315 C:1934 ,T:235 CR:1271 TR:31 Ra3-a4 Pg2-g3 Ra4-a3 Rb7x b4 Ra3xf3 Pa2-a4 Rf3xg3 Pa4-a5 Rg3-g2 Kb2-b3 Rg2-g3 Kb3-c4 12 -35 930 841091 C:2517 ,T:301 CR:1999 TR:41 Ra3-a4 Pg2-g3 Ra4-a3 Rb7x b4 Ra3xf3 Pa2-a4 Rf3xg3 Pa4-a5 Rg3-g2 Kb2-b3 Rg2-g3 Kb3-c4 13 -33 1905 1742255 C:4644 ,T:747 CR:4079 TR:142 Ra3-a4 Pg2-g3 Pg7-g6 Rb7- b6 Kf8-f7 Rb6-b5 Kf7-e6 Pf3-f4 Pe5xf4 Pg3xf4 Ke6-f7 Rb5-b7 Kf7-e6 14 -31 3769 3470962 C:9733 ,T:1147 CR:8298 TR:212 Ra3-a4 Pg2-g3 Pg7-g6 Rb7- b6 Kf8-e7 Pg3-g4 Ke7-f7 Rb6-b7 Kf7-e6 Rb7-g7 Pg6-g5 Pg4xh5 Pg5xh4 Ph5-h6 ^C After forcing Re3 : D:\chess\suites>e:messchess solve -rf -sl -time 900 test_pos.epd Trying to solve test suite test_pos.epd with 900.00 secs per test. 2 72 2 251 C:7 ,T:0 CR:1 TR:0 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 3 72 2 861 C:31 ,T:0 CR:15 TR:0 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 4 65 3 1957 C:38 ,T:0 CR:24 TR:0 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 5 101 6 4373 C:113 ,T:0 CR:52 TR:0 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Kf8-e7 6 110 11 8373 C:155 ,T:0 CR:98 TR:0 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Pg7-g5 Rb4-b8 Kf8-e7 7 110 21 16379 C:235 ,T:5 CR:136 TR:1 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Pg7-g5 Rb4-b8 Kf8-e7 8 108 41 35104 C:392 ,T:16 CR:273 TR:6 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Pg7-g5 Rb4-b8 Kf8-e7 Rb8-b7 Ke7-e6 9 108 94 83239 C:682 ,T:34 CR:533 TR:10 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Pg7-g5 Rb4-b8 Kf8-e7 Rb8-b7 Ke7-e6 10 77 221 204625 C:1508 ,T:113 CR:1261 TR:22 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Rg2-f2 Pa4-a5 Rf2xf3 Kb3-a4 Rf3-f2 Rb4-b8 Kf8-e7 11 74 436 409502 C:2565 ,T:238 CR:2214 TR:43 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Rg2-f2 Pa4-a5 Rf2xf3 Kb3-a2 Rf3-d3 Rb4-b8 Kf8-f7 12 75 891 849301 C:4765 ,T:546 CR:4354 TR:128 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Rb4-b8 Kf8-e7 Pa2-a4 Rg2-f2 Pa4-a5 Rf2xf3 Kb3-b4 Rf3-f4 Rb8-b7 Ke7-d6 13 69 1917 1824057 C:8483 ,T:1100 CR:7859 TR:329 Rb7xb4 Re3-e2 Kb2-b3 Re2x g2 Pa2-a4 Rg2-d2 Pa4-a5 Rd2-d3 Kb3-c4 Rd3-d8 Rb4-b6 Kf8-e8 Rb6-b3 Rd8-a8 Kc4-b5 14 75 4024 3880749 C:15859 ,T:2106 CR:14088 TR:557 Rb7xb4 Re3-e2 Kb2-b3 Re 2xg2 Pa2-a4 Rg2-d2 Rb4-b8 Kf8-f7 Pa4-a5 Rd2-d6 Rb8-b7 Kf7-g6 Kb3-c4 Rd6-d8 Pa5-a 6 15 84 7821 7535455 C:31016 ,T:4082 CR:26723 TR:953 Rb7xb4 Re3-e2 Kb2-b3 Re 2xg2 Pa2-a4 Rg2-d2 Rb4-b8 Kf8-f7 Pa4-a5 Rd2-d6 Rb8-b7 Kf7-g6 Kb3-c4 Rd6-d8 Kc4-b 5 Rd8-c8 Regards Mridul
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