Author: Dann Corbit
Date: 14:01:48 11/28/01
Subject: Re: Has anyone ever formed a board position with more legal moves than
this?
Posted by Dann Corbit (Profile) on November 28, 2001 at 16:58:25:
In Reply to: Re: Has anyone ever formed a board position with more legal moves
than this? posted by Dann Corbit on November 28, 2001 at 16:54:41:
On November 28, 2001 at 16:54:41, Dann Corbit wrote:
>Some really simple checkmates.
>Mate in 2:
>[D]n1r1r1b1/1P1P1P1P/1Q6/3NBNK1/R7/4p1p1/3PBPkP/2R5 w - - bm Nf4+;
>
>Mate in 1:
>[D]4Q1qk/1Q4RN/3Q3N/Q4Q1B/2Q4B/4Q3/1Q4R1/3Q3K w - - bm Nf7# Qcxg8# Qexg8# R7g3#
>R7g4# R7g5# R7g6# Rc7# Rd7# Re7# Rf7# Rxg8#;
>
>[D]5k2/2K5/3N1B2/P1NB4/6Q1/4R3/P1PP1P1P/1R6 w - - bm Be7# Bg7# Nd7# Ne6# Qc8#
>Qg7# Qg8# Rb8# Re8#;
>
>[D]3Q4/1Q4Q1/4Q3/2Q4R/Q4Q2/3Q4/1Q4Rp/1K1BBNNk w - - bm Ng3# Qxh2# Rc2# Rd2# Re2#
>Rf2# Rg3# Rg4# Rg6# Rgg5# Rgxh2# Rhxh2#;
>
>[D]q2Q3r/n6R/kpB1N1K1/p1p1Bppp/1PN3P1/1n1pp1b1/P1PPPP1P/r5Rb w - - bm Nc7#
>Qxb6#;
>
>[D]3nkn2/4P3/4N2P/4B3/P1N1B1K1/1R6/5Q2/3R4 w - - bm Qxf8# exd8=Q# exf8=Q#;
>
>How long does your program take?
>The last one gave crafty a cross-eyed hissy fit on my machine.
Maybe it was the last two.
The strangest part is that it took over five minutes of wall time to complete
this test (with the last two positions getting the lion's share) and yet crafty
only reported a couple seconds time used?!
E:\crafty\release>crafty1
EPD Kit revision date: 1996.04.21
unable to open book file [e:\crafty\release/books.bin].
hash table memory = 192M bytes.
pawn hash table memory = 80M bytes.
EGTB cache memory = 32M bytes.
draw score set to 0.00 pawns.
choose from book moves randomly (using weights.)
choose from 5 best moves.
book learning enabled
result learning enabled
position learning enabled
threshold set to 9 pawns.
5 piece tablebase files found
19045kb of RAM used for TB indices and decompression tables
Crafty v18.12
White(1): epdpfga \manyt.epd
This command takes two parameters
EG fault: a problem occurred during epdpfga processing
White(1): epdpfga \many.epd many.out
PFGA: EPD record: 1
middle-game phase
clearing hash tables
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 0.03 Mate 1. Rxg8#
1-> 0.03 Mate 1. Rxg8#
2 0.03 Mate 1. Rxg8#
2-> 0.03 Mate 1. Rxg8#
3 0.03 Mate 1. Rxg8#
3-> 0.03 Mate 1. Rxg8#
4 0.03 Mate 1. Rxg8#
4-> 0.03 Mate 1. Rxg8#
time=0.03 cpu=0% mat=94 n=5421 fh=100% nps=10k
ext-> chk=48 cap=0 pp=0 1rep=0 mate=0
predicted=0 nodes=5421 evals=1
endgame tablebase-> probes done=0 successful=0
PFGA: EPD record: 2
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 0.00 Mate 1. Ne6#
1-> 0.00 Mate 1. Ne6#
2 0.00 Mate 1. Ne6#
2-> 0.00 Mate 1. Ne6#
3 0.00 Mate 1. Ne6#
3-> 0.01 Mate 1. Ne6#
4 0.01 Mate 1. Ne6#
4-> 0.11 Mate 1. Ne6#
time=0.11 cpu=100% mat=37 n=81594 fh=100% nps=741k
ext-> chk=7342 cap=0 pp=0 1rep=985 mate=0
predicted=0 nodes=81594 evals=10
endgame tablebase-> probes done=0 successful=0
PFGA: EPD record: 3
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 0.02 37.98 1. dxc8=Q
1 0.04 38.70 1. Nfxe3+ Kxh2 2. dxe8=Q
1-> 0.05 38.70 1. Nfxe3+ Kxh2 2. dxe8=Q
2 0.05 39.09 1. Nfxe3+ Kxf2 2. dxe8=Q
2 0.05 ++ 1. dxc8=Q!!
2 0.07 41.17 1. dxc8=Q Nxb6 2. fxe8=Q Bxh7 3. Nfxe3+
2 0.07 Mat02 1. Nf4+ Kxf2 2. Qxe3#
2-> 0.09 Mat02 1. Nf4+ Kxf2 2. Qxe3#
3 0.09 Mat02 1. Nf4+ Kxf2 2. Qxe3#
3-> 0.14 Mat02 1. Nf4+ Kxf2 2. Qxe3#
4 0.15 Mat02 1. Nf4+ Kxf2 2. Qxe3#
4-> 0.45 Mat02 1. Nf4+ Kxf2 2. Qxe3#
time=0.45 cpu=100% mat=20 n=2507183 fh=99% nps=5571k
ext-> chk=12352 cap=279 pp=110 1rep=972 mate=0
predicted=0 nodes=2507183 evals=9984
endgame tablebase-> probes done=0 successful=0
PFGA: EPD record: 4
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 0.00 Mate 1. Rhxh2#
1-> 0.00 Mate 1. Rhxh2#
2 0.00 Mate 1. Rhxh2#
2-> 0.01 Mate 1. Rhxh2#
3 0.01 Mate 1. Rhxh2#
3-> 0.04 Mate 1. Rhxh2#
4 0.04 Mate 1. Rhxh2#
4-> 0.51 Mate 1. Rhxh2#
time=0.51 cpu=98% mat=102 n=474587 fh=100% nps=930k
ext-> chk=24279 cap=53 pp=0 1rep=4452 mate=0
predicted=0 nodes=474587 evals=1
endgame tablebase-> probes done=0 successful=0
PFGA: EPD record: 5
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 3.10 4.32 1. Qxa8 Rxa8 2. Bxa1 exf2
1 3.12 Mate 1. Qxb6#
1-> 3.13 Mate 1. Qxb6#
2 3.13 Mate 1. Qxb6#
2-> 3.14 Mate 1. Qxb6#
3 3.14 Mate 1. Qxb6#
3-> 3.19 Mate 1. Qxb6#
4 3.19 Mate 1. Qxb6#
4-> 3.39 Mate 1. Qxb6#
time=3.39 cpu=100% mat=0 n=108311323 fh=100% nps=31950k
ext-> chk=4476 cap=132 pp=7 1rep=468 mate=0
predicted=0 nodes=108311323 evals=964783
endgame tablebase-> probes done=0 successful=0
PFGA: EPD record: 6
time surplus 0.00 time limit 30.00 (3:30)
nss depth time score variation (1)
1 0.00 Mate 1. exd8=Q#
1-> 0.00 Mate 1. exd8=Q#
2 0.00 Mate 1. exd8=Q#
2-> 0.02 Mate 1. exd8=Q#
3 0.02 Mate 1. exd8=Q#
3-> 0.26 Mate 1. exd8=Q#
4 0.26 Mate 1. exd8=Q#
4-> 2.54 Mate 1. exd8=Q#
time=2.54 cpu=100% mat=28 n=1968998 fh=100% nps=775k
ext-> chk=139901 cap=214 pp=15066 1rep=22502 mate=0
predicted=0 nodes=1968998 evals=1
endgame tablebase-> probes done=0 successful=0
White(1):
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