Author: Leen Ammeraal
Date: 01:04:33 07/26/02
Go up one level in this thread
On July 26, 2002 at 00:54:10, Slater Wold wrote: >[D]8/pR4pk/1b2p3/2p3p1/N1p5/7P/PP1r2P1/6K1 b - - 0 31 > >The only move to make here is Rxb2. The win is only about 10 moves away, and >while some programs I tested find Rxb2, none have an impressive score. And >that's *if* they find it. > > >[D]8/pR4pk/1b5p/2p5/N1p2P2/6P1/PP1r2P1/6K1 b - - 0 29 > >Same position. Only slightly deeper. No program I tested can find Rxb2. Using the following epd file and epd2wb, Queen 2.29 could quickly find Rxb2 in even the hard problem version: 8/pR4pk/1b5p/2p5/N1p2P2/6P1/PP1r2P1/6K1 b - - bm Rxb2; id "passedpawn-hard"; (However, Queen did not find a very high score, as it did with the easy problem version.) Epd2Wb, Release 02 Engine: q229 Suite: rxb2hard.epd Time per move: 20 seconds Language: English (PNBRQK) Engine uses ... "analyze": No "white" & "black": Yes "ping": Yes "setboard": Yes "usermove": No Try "st": No ------------------------------------------------------------------------------- Id: passedpawn-hard Fen: 8/pR4pk/1b5p/2p5/N1p2P2/6P1/PP1r2P1/6K1 b - - 0 1 Bm: Rxb2 no 1 0 -125 2 d2d4 no 1 0 -79 5 d2d3 no 1 0 -28 7 d2d6 no 2 0 -50 52 d2d6 a4c3 no 2 0 -45 122 d2d1 g1f2 d1d6 no 2 0 -44 187 c4c3 b2c3 no 3 10 -43 312 c4c3 b2c3 d2d6 no 3 10 -34 602 d2d6 g1f2 h7g6 no 4 10 -50 1285 d2d6 g1f2 d6d2 f2f3 d2d3 f3f2 no 4 10 -44 2736 h7g6 g1f1 d2d6 a4c3 no 5 10 -32 7422 h7g6 g3g4 d2d6 f4f5 g6f6 a4c3 no 6 20 -53 16240 h7g6 g3g4 d2d6 g1f2 g6f6 a4c3 no 6 40 -50 36194 d2d1 g1f2 h6h5 b7e7 d1d2 f2f3 c4c3 e7e2 no 6 60 -46 47430 h6h5 g1h2 h7g6 h2h3 d2d6 a4c3 no 7 90 -44 79475 h6h5 b7b8 d2d1 g1f2 d1d2 f2f1 d2d6 b8b7 h7g6 no 8 200 -43 184854 h6h5 b7b8 b6c7 b8c8 c7d6 c8a8 c4c3 b2c3 yes 8 230 +28 226685 d2b2 a4b2 c4c3 b7b6 a7b6 b2d3 c3c2 g1f2 yes 9 250 +16 254552 d2b2 a4b2 c4c3 b7b6 a7b6 b2d3 c3c2 g1f2 h7h8 yes 10 310 +30 329960 d2b2 a4b2 c4c3 b7b6 a7b6 b2d3 c3c2 g1f2 b6b5 f2e3 yes 11 410 +18 468018 d2b2 a4b2 c4c3 b7b6 a7b6 b2d3 c3c2 g1f2 b6b5 f2e3 h7h8 yes 12 670 +47 813321 d2b2 a4b2 c4c3 b7b6 a7b6 b2d3 c3c2 g1f2 c5c4 d3c1 h7h8 c1e2 yes 13 1020 -13 1344870 d2b2 a4b2 c4c3 b7b6 a7b6 b2d3 c3c2 g1h2 c5c4 d3c1 g7g5 c1e2 g5f4 Result: Success Found in: 230 ms (00:00:00.230) ------------------------------------------------------------------------------- Results: <Sec Solved Total ---- ------ ------ 1 1 1 1 problem solved. 0 problems unsolved. Leen Ammeraal
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