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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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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