Another perft(7) challenge position, this from Perft(14) work unit 413 (line 92,766):
[d]rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4[/d]
One program says 3,016,077,677.
Another program says 3,016,055,832.
What does your program say?
Another perft(7) challenge position
Moderators: hgm, Rebel, chrisw
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Re: Another perft(7) challenge position
Crafty says the second one was right...sje wrote:Another perft(7) challenge position, this from Perft(14) work unit 413 (line 92,766):
[d]rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4[/d]
One program says 3,016,077,677.
Another program says 3,016,055,832.
What does your program say?
Crafty v25.1c
machine has 4 processors
White(1): rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4
Black(1): perft 7
total moves=3016055832 time=94.63
Black(1):
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Re: Another perft(7) challenge position
Same for Abbess:
perft 7: 3,016,055,832 nodes
perft 7: 3,016,055,832 nodes
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Re: Another perft(7) challenge position
My engine gives:
D7 3016055832
D7 3016055832
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Re: Another perft(7) challenge position
NGN says:
Code: Select all
fen rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4
OK
perftfastmt 7
Time elapsed: 11.13300 seconds
Total leaf nodes: 3016055832
270.9M LNPS
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Re: Another perft(7) challenge position
GnuCheese: Perft(7)=3016055832 time=80.27s nps=647917
Ideas=science. Simplification=engineering.
Without ideas there is nothing to simplify.
Without ideas there is nothing to simplify.
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Re: Another perft(7) challenge position
Zurichess agrees with the second number
Code: Select all
$ go run perft.go --fen "rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4" --max_depth 8
Searching FEN "rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4"
depth nodes captures enpassant castles promotions eval KNps elapsed
-----+------------+----------+---------+---------+----------+-----+------+-------
1 3 0 0 0 0 49 61.715µs
2 118 6 0 0 0 1384 85.258µs
3 3022 87 0 0 0 131 23.053814ms
4 113355 7658 0 0 0 4628 24.490962ms
5 3007414 131775 32 0 0 9274 324.285563ms
6 109477393 8886368 537 28312 0 34647 3.159824654s
7 3016055832 174603538 70325 0 0 37464 1m20.506237628s
zurichess - http://www.zurichess.xyz
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Re: Another perft(7) challenge position
Jazz:
Code: Select all
setboard rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4
8♜ ♞ ♝ ♛ ♝ ♜ *
7♟ ♟ ♟ ♟ ♚ ♟ ♟ ♟
6 ♟ ♞
5
4 ♛
3 ♟ ♟
2♟ ♟ ♟ ♟ ♟ ♟
1♜ ♞ ♝ ♚ ♝ ♞ ♜
a b c d e f g h
#0b (f)+>perft 7
1 3 0.00 375000.00nps
2 118 0.00 4538461.54nps
3 3022 0.00 13371681.42nps
4 113355 0.01 14986118.46nps
5 3007414 0.16 18743036.99nps
6 109477393 4.83 22679875.71nps
7 3016055832 153.83 19606760.75nps
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Re: Another perft(7) challenge position.
Hello Steven:
Here is the divided perft that confirms others' results:
Regards from Spain.
Ajedrecista.
Here is the divided perft that confirms others' results:
Code: Select all
Intel Pentium D930 (3 GHz).
JetChess 1.0.0.0 (single core, 32-bit, hash = 256 MB).
rnbq1b1r/ppppkppp/4pn2/8/1Q6/2PP4/PP2PPPP/RNB1KBNR b KQ - 2 4
1 c7-c5 888323498
2 d7-d6 973582576
3 ke7-e8 1154149758
Total: 3016055832
3,016,055,832 (move pathes after 7 half moves).
Time: 13.125 s (0:00:13.125).
Ajedrecista.
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Re: Another perft(7) challenge position
Skipper3 agrees with Perft(5) = 3007414. Cost 25 seconds and I don't care.