Author: Ross Boyd
Date: 12:35:14 03/17/05
Hi all, Believe it or not, Fruit 2 needs 7:08 to choose Kb1 on a P3-600 with 64MB hash. IMO, this is quite amazing. The position is a long-time standard test of an engine's transposition table and Fruit is a super engine. Notice also, it only achieves 27 ply after 4 and a half minutes. In comparison, TRACE gets to ply 36 in ~10 secs. I wonder if Fruit's replacement scheme needs attention.... [D]8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1 FEN: 8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1 Fruit 2.0: 1/1 00:00.431 2 0 +0.60 Kb1 1/1 00:00.431 4 0 +0.84 Kb2 2/2 00:00.431 12 0 +0.48 Kb2 Kb6 3/3 00:00.431 39 0 +0.72 Kb2 Kb6 Kc3 4/4 00:00.441 103 0 +0.72 Kb2 Kb6 Kc3 Kc7 5/5 00:00.441 217 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 6/6 00:00.451 387 0 +0.72 Kb2 Kb6 Kc3 Kc7 Kd3 Kd7 7/7 00:00.451 638 0 +0.72 Kb2 Kb6 Kc3 Kc7 Kd3 Kd7 Ke3 8/9 00:00.481 1.059 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 9/9 00:00.481 1.505 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Ke3 10/11 00:00.491 2.252 0 +0.72 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Ke3 Kd7 11/11 00:00.491 3.053 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 Kb6 Kc4 12/13 00:00.501 4.185 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc3 Kb7 Kc4 Kb6 13/13 00:00.501 5.020 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc3 Kb7 Kc2 Kb6 Kd3 14/15 00:00.511 5.963 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc3 Kb7 Kc2 Kb6 Kd3 Kc7 15/15 00:00.521 6.959 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc3 Kb7 Kc2 Kb6 Kd3 Kc7 Kc4 16/17 00:00.531 8.318 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc2 Kd7 Kd3 Kc7 Kc3 Kb7 Kc4 Kb6 17/18 00:00.561 9.454 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc2 Kd7 Kd3 Kc7 Kc3 Kb7 Kc2 Kb6 Kd3 18/18 00:00.561 11.196 0 +0.84 Kb2 Kb6 Kc3 Kc7 Kd3 Kb6 Kd2 Kc7 Kc2 Kd7 Kb3 Kc7 Kc3 Kb7 Kc2 Kb6 Kd3 Kc7 19/20 00:00.571 22.618 0 +0.84 Kb2 Kb6 Kc3 Kb7 Kc2 Kb6 Kd2 Kc7 Kd3 Kb6 Ke3 Kc7 Kd2 Kd7 Kc2 Kc7 Kb3 Kb6 Kc4 20/22 00:00.581 26.661 0 +0.84 Kb2 Kb6 Kc3 Kb7 Kc2 Kb6 Kd2 Kc7 Kd3 Kb6 Ke3 Kc7 Kd2 Kd7 Kc2 Kc7 Kb3 Kb6 Kc4 Kc7 21/22 00:01.982 255.750 0 +0.84 Kb2 Kb6 Kc3 Kb7 Kc2 Kb6 Kd2 Kc7 Kd3 Kb6 Ke3 Kc7 Kf3 Kd7 Kf2 Ke7 Ke2 Kd7 Kd3 Kc7 Kc4 22/24 00:04.096 2.058.663 543.837 +0.84 Kb2 Ka8 Kc3 Kb7 Kc2 Kc8 Kd3 Kc7 Kc4 Kb6 Kb3 Kc7 Ka3 Kd7 Kb2 Kc7 Kb3 Kb6 Kc4 Ka6 Kd3 Kb6 23/24 00:04.126 2.064.083 557.165 +0.84 Kb2 Ka8 Kc3 Kb7 Kc2 Kb8 Kd2 Kc8 Kd3 Kc7 Kc4 Kb6 Kb3 Kc7 Ka2 Kd7 Kb2 Kc8 Ka3 Kb7 Ka2 Kc8 Kb3 24/25 00:09.274 4.918.317 554.985 +0.84 Kb2 Ka8 Kc3 Kb7 Kc2 Kb8 Kd2 Kc8 Kd3 Kc7 Ke2 Kd7 Kd1 Kc8 Kd2 Kd7 Kc3 Kc7 Kb3 Kb6 Kc4 Ka6 Kd3 Kb6 25/27 00:41.989 21.206.318 522.615 +0.84 Kb2 Ka8 Kc3 Kb7 Kc2 Kb8 Kd2 Kc8 Kd3 Kc7 Kc4 Kb6 Kb3 Kc7 Ka2 Kd7 Kb2 Kc8 Kb1 Kc7 Ka1 Kd7 Ka2 Kc8 Kb3 26/29 01:20.867 42.275.678 525.350 +0.84 Kb2 Ka8 Kc3 Kb7 Kc2 Kb8 Kd2 Kc8 Ke2 Kd7 Kd1 Kc7 Kc1 Kb7 Kb1 Kc7 Kb2 Kc8 Ka3 Kb7 Kb3 Kc7 Kc4 Kb6 Kd3 Kc7 27/29 04:33.514 149.870.249 548.765 +0.84 Kb2 Ka8 Kc3 Kb7 Kc2 Kb8 Kd2 Kc8 Ke2 Kd7 Kd1 Kc7 Kc1 Kb7 Kb1 Kc7 Kb2 Kc8 Ka1 Kc7 Kb1 Kc8 Kb2 Kb8 Kb3 Kc7 Kc4 27/31 07:08.717 238.982.279 557.646 +1.88 Kb1 Ka8 Kb2 Ka7 Kb3 Ka6 Kc2 Kb7 Kc3 Kb6 Kc4 Ka6 Kd3 Kb7 Ke3 Kc8 Kf3 Kd8 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 Kg5 Kd7 Kxf5 28/31 07:18.501 245.782.013 560.816 +1.88 Kb1 Ka8 Kb2 Ka7 Kb3 Ka6 Kc2 Kb7 Kc3 Kb6 Kc4 Ka6 Kd3 Kb7 Ke3 Kc8 Kf3 Kd8 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 Kg5 Kf7 Kxf5 Ke7 29/35 10:01.555 336.380.560 559.538 +2.06 Kb1 Ka8 Kb2 Ka7 Kb3 Ka6 Kc2 Kb7 Kc3 Kb6 Kc4 Ka6 Kd3 Kb7 Ke3 Kc8 Kf3 Kd8 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 Kg5 Kf7 Kxf5 Ke7 Ke4 30/35 10:01.896 336.571.613 559.558 +2.04 Kb1 Ka8 Kb2 Ka7 Kb3 Ka6 Kc2 Kb7 Kc3 Kb6 Kc4 Ka6 Kd3 Kb7 Ke3 Kc7 Kf3 Kd8 Kg3 Ke7 Kh4 Kf6 Kh5 Kf7 Kg5 Kg7 Kxf5 Kf7 Ke4 Kf6 Here is TRACE 1.33B's output: FEN: 8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w - - 0 1 TRACE 1.33B: 2 00:00.020 19 1.900 +0.75 Kb1 2 00:00.020 20 2.000 +0.95 Kb2 3 00:00.020 39 3.900 +1.15 Kb2 Kb6 Kc3 4 00:00.020 100 10.000 +1.15 Kb2 Kb6 Kc3 Kc7 5 00:00.020 210 21.000 +1.35 Kb2 Kb6 Kc3 Kc7 Kc4 6 00:00.030 378 37.800 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kd7 7 00:00.030 705 70.500 +1.25 Kb2 Kb6 Kc3 Kc7 Kb3 Kd7 Kc4 8 00:00.030 1.225 122.500 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 9 00:00.060 1.757 175.700 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 10 00:00.060 2.611 261.100 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 11 00:00.070 3.653 365.300 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 12 00:00.070 4.872 487.200 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 13 00:00.080 6.261 626.100 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 14 00:00.080 8.744 218.600 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 15 00:00.090 10.771 269.275 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 16 00:00.090 14.635 365.875 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 17 00:00.100 17.105 342.100 +1.25 Kb2 Kb6 Kc3 Kc7 Kc4 Kb6 Kd3 Kc7 Kc3 18 00:00.120 27.846 253.145 +1.25 Kb2 Kb6 Kc3 Kb7 Kc4 Kb6 19 00:00.161 46.710 333.642 +1.25 Kb2 Ka8 Kc3 Kb7 20 00:00.161 52.375 349.166 +1.25 Kb2 Ka8 Kc3 Kb7 Kc4 Kb6 Kd3 Kc7 20 00:00.181 59.395 349.382 +1.26 Kb1 20 00:00.211 75.563 377.815 +2.66 Kb1 Ka8 Kb2 Kb7 Kc3 Kc7 Kd3 Kb6 Ke3 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 Kg5 Kd7 21 00:00.221 85.773 389.877 +2.65 Kb1 Ka8 Kb2 Ka7 22 00:00.291 134.374 463.358 +2.58 Kb1 Kb7 23 00:00.351 166.351 489.267 +2.34 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kd8 Kc3 Kc7 Kb3 24 00:00.421 214.561 523.319 +2.57 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 25 00:00.511 272.545 545.090 +2.43 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 Ke3 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Kg7 26 00:00.621 346.056 567.304 +2.67 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 Ke3 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 27 00:01.731 416.557 578.551 +2.82 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 Ke2 Kc8 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 28 00:01.831 482.382 581.183 +2.82 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 Ke2 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 29 00:01.982 574.775 592.551 +2.76 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 Ke2 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 Kh5 Ke7 30 00:01.132 667.760 596.214 +3.01 Kb1 30 00:01.152 679.729 596.253 +3.01 Kb1 31 00:01.553 909.583 590.638 +3.01 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kd8 Kc3 Kc7 Kd3 Kb6 Ke3 32 00:02.103 1.241.756 591.312 +3.21 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kc7 Kd3 Kb7 Ke3 Kc7 33 00:02.534 1.480.104 587.342 +3.46 Kb1 33 00:02.614 1.521.814 585.313 +3.46 Kb1 34 00:03.834 1.644.867 583.286 +3.21 Kb1 34 00:03.215 1.844.537 576.417 +3.21 Kb1 35 00:04.557 2.429.447 511.462 +3.46 Kb1 35 00:05.757 2.517.823 503.564 +3.46 Kb1 36 00:10.674 4.497.503 449.300 +3.46 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kd8 Kc3 Kc7 Kd3 Kb7 Ke3 Kc7 Kf3 Kd7 Kg3 Ke7 Kh4 Kf6 37 00:18.407 8.208.144 437.301 +3.70 Kb1 Kb7 Kc1 Kc7 Kd1 Kd7 Kc2 Kd8 Kc3 Kc7
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