Six perft(7) mismatch positions from work unit 510

[sje]

Six perft(7) mismatch positions from work unit 510

Code: Select all

54794c54794
< rnbqkb1r/1pp1pppp/3p1n2/p7/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 16890322128 405367731072
---
> rnbqkb1r/1pp1pppp/3p1n2/p7/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 16890317400 405367617600
55198c55198
< rnbqkb1r/1pp1pppp/3p1n2/p7/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 24 16702393203 400857436872
---
> rnbqkb1r/1pp1pppp/3p1n2/p7/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 24 16702390143 400857363432
72522c72522
< rnbqkb1r/1pp1pppp/p2p1n2/8/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 13389659640 321351831360
---
> rnbqkb1r/1pp1pppp/p2p1n2/8/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 13389656424 321351754176
72925c72925
< rnbqkb1r/1pp1pppp/p2p1n2/8/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 24 13371885051 320925241224
---
> rnbqkb1r/1pp1pppp/p2p1n2/8/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 24 13371882999 320925191976
81506c81506
< rnbqkb1r/1pp1pppp/p4n2/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 14820559274 355693422576
---
> rnbqkb1r/1pp1pppp/p4n2/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 14820558404 355693401696
81909c81909
< rnbqkb1r/1pp1pppp/p4n2/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 24 14762765730 354306377520
---
> rnbqkb1r/1pp1pppp/p4n2/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 24 14762765034 354306360816

[ZirconiumX]

Sharper:

Code: Select all

rnbqkb1r/1pp1pppp/3p1n2/p7/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 = 16890317400
rnbqkb1r/1pp1pppp/3p1n2/p7/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 = 16702390143
rnbqkb1r/1pp1pppp/p2p1n2/8/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 = 13389656424
rnbqkb1r/1pp1pppp/p2p1n2/8/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 = 13371882999
rnbqkb1r/1pp1pppp/p4n2/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 = 14820558404
rnbqkb1r/1pp1pppp/p4n2/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4 = 14762765034

[sje]

Thank you.

Again, the 128 bit signature program beats the 64 bit signature program each time.

Fortunately, the mismatches are rare, less than two per million positions. So the need for a third run isn't too frequent.

By the way, the project has just passed the fifty million position point.

[pkumar]

perft D7 rnbqkb1r/1pp1pppp/3p1n2/p7/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4
D7: 16890317400

perft D7 rnbqkb1r/1pp1pppp/3p1n2/p7/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4
D7: 16702390143

perft D7 rnbqkb1r/1pp1pppp/p2p1n2/8/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4
D7: 13389656424

perft D7 rnbqkb1r/1pp1pppp/p2p1n2/8/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4
D7: 13371882999

perft D7 rnbqkb1r/1pp1pppp/p4n2/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4
D7: 14820558404

perft D7 rnbqkb1r/1pp1pppp/p4n2/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 3 4
D7: 14762765034