Perft(7) challenge position #6
From line 83,408 of Perft(14) work unit #448:
[d]rn1qkbnr/ppp2ppp/3pp3/8/3PP1b1/5Q2/PPP2PPP/RNB1KBNR b KQkq - 0 4[/d]
What is the value of perft(7) for the above?
One program says: 75,528,514,044
A second says: 75,528,515,636
Perft(7) challenge position #6
Moderators: hgm, Rebel, chrisw
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pkumar
- Posts: 100
- Joined: Tue Oct 15, 2013 5:45 pm
Re: Perft(7) challenge position #6
perft D7 rn1qkbnr/ppp2ppp/3pp3/8/3PP1b1/5Q2/PPP2PPP/RNB1KBNR b KQkq - 0 4
D7 75528515636
D7 75528515636
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sje
- Posts: 4675
- Joined: Mon Mar 13, 2006 7:43 pm
64 bit signature false positive rate is now circa 1.54*10^-6
64 bit signature false positive rate is now circa 1.54*10^-6 (1/650,000)
6 cases were located from 39 work units; each work unit has 100,000 unique positions.
Fully verified work units (33):
400-408 411-412 414 416 419 421-428 430-439 445
Work units with at least one false positive (6):
409-410 413 415 417 448
6 cases were located from 39 work units; each work unit has 100,000 unique positions.
Fully verified work units (33):
400-408 411-412 414 416 419 421-428 430-439 445
Work units with at least one false positive (6):
409-410 413 415 417 448
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zullil
- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: Perft(7) challenge position #6
We agree:pkumar wrote:perft D7 rn1qkbnr/ppp2ppp/3pp3/8/3PP1b1/5Q2/PPP2PPP/RNB1KBNR b KQkq - 0 4
D7 75528515636
Code: Select all
FEN string = rn1qkbnr/ppp2ppp/3pp3/8/3PP1b1/5Q2/PPP2PPP/RNB1KBNR b KQkq -
Depth = 7
Leaf nodes = 75528515636
Time taken = 1189855 ms