Author: Uri Blass
Date: 01:29:21 03/17/02
Go up one level in this thread
On March 17, 2002 at 01:49:41, Antonio Dieguez wrote: >these are possibly bugs. > >here Qd6?, inviting to Nb5 and Bf4. >[D]2k1rbnr/ppp1qppp/2n1b3/3p2N1/3P4/2N4P/PPP1BPP1/R1BQ1RK1 b - - 0 9 My program likes Nf6 here The piece square table tells it that f6 is better than g8 for the knight. Here is analysis before Qd6(analysis was copied from winboard.debug) 26988 <first : 1 -4 2 145 g8f6 g5e6 e7e6 26999 <first : 2 -24 3 243 g8f6 c1e3 26999 <first : 2 -24 3 420 g8f6 c1e3 27009 <first : 3 -19 4 993 g8f6 c1e3 c8b8 g5e6 e7e6 27009 <first : 3 -19 4 2250 g8f6 c1e3 c8b8 g5e6 e7e6 27029 <first : 4 -29 6 4109 g8f6 g5e6 e7e6 c1e3 27039 <first : 4 -29 7 6340 g8f6 g5e6 e7e6 c1e3 27209 <first : 5 -24 24 24664 g8f6 c1e3 c8b8 a1c1 e6f5 27389 <first : 5 -24 42 58174 g8f6 c1e3 c8b8 a1c1 e6f5 27810 <first : 6 -29 84 123567 g8f6 c1e3 c8b8 g5e6 e7e6 a1c1 28230 <first : 6 -29 126 190149 g8f6 c1e3 c8b8 g5e6 e7e6 a1c1 31785 <first : 7 -23 481 605060 g8f6 c1e3 e7b4 g5e6 f7e6 e2h5 g7g6 34149 <first : 7 -23 718 1018389 g8f6 c1e3 e7b4 g5e6 f7e6 e2h5 g7g6 48079 <first : 8 -28 2111 3176188 g8f6 c1e3 g7g6 g5e6 f7e6 a1c1 f8g7 e2f3 57823 <first : 8 -28 3085 4856053 g8f6 c1e3 g7g6 g5e6 f7e6 a1c1 f8g7 e2f3 144838 <first : 9 -18 11787 15730920 g8f6 c1e3 g7g6 g5e6 f7e6 a1c1 f8g7 e2f3 c8b8 190444 <first : 9 -18 16347 23584628 g8f6 c1e3 g7g6 g5e6 f7e6 a1c1 f8g7 e2f3 c8b8 190444 <first : move g8f6 Here is analaysis after Qd6 (you can see that the evaluation is 0.49 for white) 27770 <first : 1 59 2 98 c1e3 27770 <first : 2 29 2 290 c1e3 g8f6 g5e6 d6e6 27770 <first : 2 30 2 330 g5e6 27780 <first : 2 39 3 373 g5e6 d6e6 27780 <first : 2 39 3 1135 g5e6 d6e6 27780 <first : 3 64 3 1259 g5e6 d6e6 c1e3 27800 <first : 3 64 5 3331 g5e6 d6e6 c1e3 27820 <first : 4 34 7 5751 g5e6 d6e6 e2g4 f7f5 27880 <first : 4 35 13 12870 c3b5 27920 <first : 4 44 17 17223 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 g5e6 d7e6 28020 <first : 4 44 27 27932 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 g5e6 d7e6 28040 <first : 5 59 29 31313 c3b5 d6d7 g5e6 d7e6 c1e3 28401 <first : 5 59 65 87662 c3b5 d6d7 g5e6 d7e6 c1e3 28671 <first : 6 49 92 123878 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 a1c1 31766 <first : 6 49 401 475356 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 a1c1 32417 <first : 7 44 466 573918 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 g5e6 d7e6 42281 <first : 7 44 1453 2153208 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 g5e6 d7e6 49081 <first : 8 49 2133 3036107 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 g5e6 d7e6 e2f3 125811 <first : 8 49 9806 11822557 c3b5 d6d7 c1f4 f8d6 b5d6 c7d6 g5e6 d7e6 e2f3 125811 <first : move c3b5 > >here f6? giving away some material. >[D]2k1rbnr/ppp1qppp/2n1b3/1N1p2N1/3P1B2/7P/PPP1BPP1/R2Q1RK1 b - - 0 11 analyzing of movei(from winboard.debug) It needs only depth 5 to find that f6 is bad I believe that averno is stronger than my program so I wonder what is the problem. 48310 <first : 1 -54 3 505 e6f5 48330 <first : 2 -59 5 2063 e6f5 b5c3 48330 <first : 2 -58 5 2159 f7f6 48330 <first : 2 -57 5 2255 f7f6 g5e6 e7e6 48340 <first : 2 -57 6 2589 f7f6 g5e6 e7e6 48340 <first : 3 -57 6 2930 f7f6 g5e6 e7e6 48360 <first : 3 -57 8 4891 f7f6 g5e6 e7e6 48370 <first : 4 -62 9 7183 f7f6 g5e6 e7e6 b5c3 48420 <first : 4 -62 13 12459 f7f6 g5e6 e7e6 b5c3 48470 <first : 5 -154 19 21875 f7f6 g5e6 e7e6 e2g4 f6f5 b5c7 48530 <first : 5 -153 25 31931 e6f5 48650 <first : 5 -134 37 47722 e6f5 e2g4 g8h6 b5c7 e8d8 48790 <first : 5 -133 51 65080 g8f6 48950 <first : 5 -129 67 85028 g8f6 b5c7 e8d8 g5e6 f7e6 49201 <first : 5 -128 92 119585 e6d7 49491 <first : 5 -74 121 152855 e6d7 e2h5 g7g6 b5c7 g6h5 c7e8 d7e8 d1h5 c6d4 g5f7 49601 <first : 5 -74 132 170626 e6d7 e2h5 g7g6 b5c7 g6h5 c7e8 d7e8 d1h5 c6d4 g5f7 50373 <first : 6 -60 209 286079 e6d7 e2h5 g7g6 h5g4 d7g4 h3g4 50743 <first : 6 -60 246 347750 e6d7 e2h5 g7g6 h5g4 d7g4 h3g4 56521 <first : 7 -128 824 1261105 e6d7 e2d3 h7h6 g5f3 g7g5 f4c7 g8f6 58504 <first : 7 -127 1022 1592144 e7f6 60707 <first : 7 -81 1242 1924508 e7f6 g2g3 e8e7 a1c1 h7h6 g5e6 f6e6 61509 <first : 7 -81 1322 2065222 e7f6 g2g3 e8e7 a1c1 h7h6 g5e6 f6e6 61509 <first : move e7f6 after f6 depth 6 is enough to see that white wins a piece and not a pawn and it means that depth 7 in the original position is enough to see that Qf6 is bettter than f6 by more than 2 pawns 15342 <first : 1 57 3 101 g5e6 e7e6 15342 <first : 2 57 3 157 g5e6 e7e6 15342 <first : 2 57 3 467 g5e6 e7e6 15352 <first : 3 62 4 784 g5e6 e7e6 b5c3 15362 <first : 3 62 5 2801 g5e6 e7e6 b5c3 15382 <first : 4 154 7 5320 g5e6 e7e6 e2g4 f6f5 b5c7 15412 <first : 4 154 10 11876 g5e6 e7e6 e2g4 f6f5 b5c7 15432 <first : 5 154 12 14917 g5e6 e7e6 e2g4 f6f5 b5c7 15532 <first : 5 154 22 33767 g5e6 e7e6 e2g4 f6f5 b5c7 15642 <first : 6 319 33 51226 g5e6 e7e6 e2g4 f6f5 b5c7 e6e4 c7e8 e4f4 16393 <first : 6 319 108 203275 g5e6 e7e6 e2g4 f6f5 b5c7 e6e4 c7e8 e4f4 16824 <first : 7 319 151 279986 g5e6 e7e6 e2g4 f6f5 b5c7 e6e4 c7e8 e4f4 19988 <first : 7 319 467 887151 g5e6 e7e6 e2g4 f6f5 b5c7 e6e4 c7e8 e4f4 22312 <first : 8 319 700 1290368 g5e6 e7e6 e2g4 f6f5 b5c7 e6d7 c7e8 f5g4 33357 <first : 8 319 1804 3409662 g5e6 e7e6 e2g4 f6f5 b5c7 e6d7 c7e8 f5g4 51794 <first : 9 316 3648 6696220 g5e6 e7e6 e2g4 f6f5 b5c7 e6d7 c7e8 f5g4 d1g4 d7g4 h3g4 c6d4 105762 <first : 9 316 9045 16920112 g5e6 e7e6 e2g4 f6f5 b5c7 e6d7 c7e8 f5g4 d1g4 d7g4 h3g4 c6d4 160921 <first : 10 316 14560 27093036 g5e6 e7e6 e2g4 f6f5 b5c7 e6d7 c7e8 f5g4 d1g4 d7g4 h3g4 c6d4 453411 <first : 10 316 43809 82674717 g5e6 e7e6 e2g4 f6f5 b5c7 e6d7 c7e8 f5g4 d1g4 d7g4 h3g4 c6d4 453411 <first : move g5e6 Uri
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