Author: Uri Blass
Date: 13:40:25 06/05/02
Go up one level in this thread
On June 05, 2002 at 14:51:59, José Carlos wrote: >On June 05, 2002 at 13:42:57, Bas Hamstra wrote: > >>On June 05, 2002 at 12:15:38, Art Basham wrote: >> >>>Here the correct move is 1. RxN..! >>> >>>[D]rnbq1rk1/pppp1ppp/5n2/2b5/2B4Q/5R2/PB3PPP/3R1K2 w - - >>> >>>Mach 3 finds RxN in about 62 sec. >>> >>>Most engines I have play BxN...? etc. >> >>According to Tao the right move is Rg3 with a winning score of +2.xx and Rxf6 is >>far worse. For instance Rxf6 Nc6. And then??? >> >>Bas. > > Averno agrees in Rg3 with a score slightly lower, but still above +1. > > José C. Movei00_7a(16 Mbytes hash) prefers Bxf6 but does not see a big score of more than +1. Rg3 leads to a draw by perpetual check based on it's analysis 1 -828 2 76 b2f6 g7f6 f3f6 2 -828 2 119 b2f6 g7f6 f3f6 2 -828 3 1062 b2f6 g7f6 f3f6 3 -828 3 1439 b2f6 g7f6 f3f6 3 -828 6 4867 b2f6 g7f6 f3f6 4 -836 8 7502 b2f6 g7f6 h4f6 d8f6 f3f6 4 -836 24 26621 b2f6 g7f6 h4f6 d8f6 f3f6 5 -509 36 46181 b2f6 g7f6 f3h3 h7h6 h4g4 g8h7 g4f5 h7g8 f5c5 5 -509 38 50386 b2f6 g7f6 f3h3 h7h6 h4g4 g8h7 g4f5 h7g8 f5c5 6 -377 53 75502 b2f6 d8f6 f3f6 g7f6 c4d3 f6f5 h4g3 g8h8 g3c7 6 -377 65 96683 b2f6 d8f6 f3f6 g7f6 c4d3 f6f5 h4g3 g8h8 g3c7 7 -391 90 137475 b2f6 d8f6 f3f6 g7f6 h4f6 d7d6 f6g5 g8h8 g5h6 7 -391 187 304197 b2f6 d8f6 f3f6 g7f6 h4f6 d7d6 f6g5 g8h8 g5h6 8 -95 518 853636 b2f6 c5f2 h4g5 d8f6 f3f6 f2b6 f6f3 b8c6 8 -95 888 1486437 b2f6 c5f2 h4g5 d8f6 f3f6 f2b6 f6f3 b8c6 9 -85 1290 2189947 b2f6 c5f2 h4g5 d8f6 f3f6 f2h4 g5h4 g7f6 h4g3 g8h8 g3c7 9 -84 2538 4158441 f3g3 9 0 3558 5672804 f3g3 c5f2 g3g7 g8g7 h4g5 g7h8 f1f2 b8c6 b2f6 d8f6 g5f6 h8g8 f6g5 g8h8 g5f6 9 0 3690 5899010 f3g3 c5f2 g3g7 g8g7 h4g5 g7h8 f1f2 b8c6 b2f6 d8f6 g5f6 h8g8 f6g5 g8h8 g5f6 10 0 6494 10352064 f3g3 c5e7 h4h6 g7g6 g3g6 h7g6 h6g6 g8h8 g6h6 h8g8 h6g6 10 0 8307 13516818 f3g3 c5e7 h4h6 g7g6 g3g6 h7g6 h6g6 g8h8 g6h6 h8g8 h6g6 11 0 17253 28068810 f3g3 c5f2 f1f2 g8h8 g3g7 h8g7 h4g5 g7h8 b2f6 d8f6 g5f6 h8g8 f6g5 g8h8 g5e5 h8g8 e5g3 g8h8 g3e5 11 1 21946 36171483 b2f6 11 23 29498 49341633 b2f6 d8f6 f3f6 c5e7 f6f7 e7h4 f7f4 f8f7 d1e1 h4e7 c4f7 g8f8 f7h5 f8g8 e1e7 b8c6 11 23 41586 70244058 b2f6 d8f6 f3f6 c5e7 f6f7 e7h4 f7f4 f8f7 d1e1 h4e7 c4f7 g8f8 f7h5 f8g8 e1e7 b8c6 The latest movei that is slighly less materialistic finds Rg3 faster and can see a positive score for Rg3 at depth 11 but it still does not see more than +1 pawn for Rg3 and later fails high on Bf6 with the same main line of Movei00_7a when the only difference is the evaluation. 1 -824 2 83 b2f6 g7f6 f3f6 2 -824 3 127 b2f6 g7f6 f3f6 2 -824 4 1131 b2f6 g7f6 f3f6 3 -824 4 1508 b2f6 g7f6 f3f6 3 -824 6 5009 b2f6 g7f6 f3f6 4 -838 9 7627 b2f6 g7f6 h4f6 d8f6 f3f6 4 -838 37 38914 b2f6 g7f6 h4f6 d8f6 f3f6 5 -485 50 59255 b2f6 g7f6 f3h3 h7h6 h4g4 g8h7 g4f5 h7g8 f5c5 5 -485 53 63459 b2f6 g7f6 f3h3 h7h6 h4g4 g8h7 g4f5 h7g8 f5c5 6 -373 69 90367 b2f6 d8f6 f3f6 g7f6 c4d3 f6f5 h4g3 g8h8 g3c7 6 -373 82 111950 b2f6 d8f6 f3f6 g7f6 c4d3 f6f5 h4g3 g8h8 g3c7 7 -361 107 151836 b2f6 d8f6 f3f6 g7f6 c4d3 h7h5 h4g3 g8h8 g3c7 7 -361 196 301623 b2f6 d8f6 f3f6 g7f6 c4d3 h7h5 h4g3 g8h8 g3c7 8 -76 534 854585 b2f6 c5f2 h4g5 d8f6 f3f6 f2b6 f6h6 b8c6 8 -75 882 1440081 f3g3 8 -49 1154 1880883 f3g3 f6g4 g3g4 c5d4 b2d4 d8h4 g4g7 g8h8 g7g4 f7f6 g4h4 8 -49 1229 2010476 f3g3 f6g4 g3g4 c5d4 b2d4 d8h4 g4g7 g8h8 g7g4 f7f6 g4h4 9 0 2385 3812687 f3g3 c5e7 h4h6 g7g6 g3g6 h7g6 h6g6 g8h8 g6h6 h8g8 h6g6 9 0 3334 5412691 f3g3 c5e7 h4h6 g7g6 g3g6 h7g6 h6g6 g8h8 g6h6 h8g8 h6g6 10 0 5218 8501376 f3g3 c5e7 h4h6 g7g6 g3g6 h7g6 h6g6 g8h8 g6h6 h8g8 h6g6 10 0 7485 12364093 f3g3 c5e7 h4h6 g7g6 g3g6 h7g6 h6g6 g8h8 g6h6 h8g8 h6g6 11 48 88532 143612127 f3g3 g7g6 b2f6 d8f6 h4f6 b8c6 g3g6 h7g6 f6g6 g8h8 g6h5 h8g7 h5c5 f7f5 f1g1 d7d6 11 49 97531 158463457 b2f6 11 59 112790 184561373 b2f6 d8f6 f3f6 c5e7 f6f7 e7h4 f7f4 f8f7 d1e1 h4e7 c4f7 g8f8 f7h5 f8g8 e1e7 b8c6 11 59 128665 210526040 b2f6 d8f6 f3f6 c5e7 f6f7 e7h4 f7f4 f8f7 d1e1 h4e7 c4f7 g8f8 f7h5 f8g8 e1e7 b8c6 After Bf6 the latest movei show the following analysis 10 -83 5580 9650600 d8f6 f3f6 c5e7 f6f7 e7h4 f7f4 f8f7 d1e1 h4e7 c4f7 g8h8 e1e7 b8c6 10 -83 12144 20261122 d8f6 f3f6 c5e7 f6f7 e7h4 f7f4 f8f7 d1e1 h4e7 c4f7 g8h8 e1e7 b8c6 11 -91 27902 47883586 d8f6 f3f6 b8c6 c4f7 f8f7 f6f7 g8f7 h4h5 g7g6 h5d5 f7f8 d5c5 d7d6 c5c3 c8e6 c3f6 e6f7 f1g1 11 -91 36721 62940202 d8f6 f3f6 b8c6 c4f7 f8f7 f6f7 g8f7 h4h5 g7g6 h5d5 f7f8 d5c5 d7d6 c5c3 c8e6 c3f6 e6f7 f1g1 After Rg3 the latest movei has the following analysis: 10 -9990 5812 9687710 c5e7 h4h6 g7g6 g3h3 f8e8 b2f6 e7f6 h6h7 g8f8 h7f7 10 -9989 7532 12601545 f6g4 10 -212 17878 28998392 f6g4 g3g4 c5d4 b2d4 d8h4 g4g7 g8h8 g7f7 h4d4 f7f8 h8g7 f8g8 g7f6 d1d4 b8c6 d4d7 c8d7 g8a8 10 -211 21648 35149849 g7g6 10 -52 24006 39001372 g7g6 b2f6 d8f6 h4f6 d7d6 g3g6 h7g6 f6g6 g8h8 g6h5 h8g8 h5g5 g8h8 g5h6 h8g8 d1d5 c8f5 d5f5 10 -51 30764 49905079 c5f2 10 -52 56890 93832940 g7g6 b2f6 d8f6 h4f6 d7d6 g3g6 h7g6 f6g6 g8h8 g6h5 h8g8 h5g5 g8h8 g5h6 h8g8 d1d5 c8f5 d5f5 11 -76 63342 104675403 g7g6 b2f6 d8f6 h4f6 d7d5 c4d5 b8d7 f6g5 c5d6 f2f4 d7b6 d5e4 It does not see in both cases a score of more than a pawn for white(at least in depth 11). Uri
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