REPORT: wrong perft result by qperft.

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sje
Posts: 4675
Joined: Mon Mar 13, 2006 7:43 pm

Re: Correction of my error.

Post by sje »

Kotlov wrote:please correct CPW
http://chessprogramming.wikispaces.com/Perft+Results

Position 5
This position was discussed on Talkchess and caught bugs in engines several years old at depth 3.[5]
Depth
Nodes
1 42 - 44!!!
2 1352
3 53392
That entire table is wrong.

Symbolic, running on a BeagleBone Black, says:

Code: Select all

[] sf rnbq1k1r/pp1Pbppp/2p5/8/2B5/8/PPP1NnPP/RNBQK2R w KQ - 1 8 
[] pctran 0
Count: 1   Pt: 0.000   Wt: 0.000   U: 0   Inf Hz   0 s
[] pctran 1
Count: 44   Pt: 0.000   Wt: 0.000   U: 0   Inf Hz   0 s
[] pctran 2
Count: 1,486   Pt: 0.107   Wt: 0.106   U: 1.00817   13.8333 KHz   72.2894 us
[] pctran 3
Count: 62,379   Pt: 0.111   Wt: 0.111   U: 0.996331   560.317 KHz   1.7847 us
[] pctran 4
Count: 2,103,487   Pt: 0.541   Wt: 0.545   U: 0.99265   3.88802 MHz   257.2 ns
[] pctran 5
Count: 89,941,194   Pt: 8.160   Wt: 8.312   U: 0.981652   11.022 MHz   90.7277 ns
elpapa
Posts: 211
Joined: Sun Jan 18, 2009 11:27 pm
Location: Sweden
Full name: Patrik Karlsson

Re: Correction of my error.

Post by elpapa »

In think the table is correct, but it's showing the wrong position.