Discussion of chess software programming and technical issues.
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sje
- Posts: 4675
- Joined: Mon Mar 13, 2006 7:43 pm
Post
by sje »
Six perft(7) mismatches from work unit 529:
Mostly I'm looking for evidence of cosmic ray events.
Code: Select all
40837c40837
< rnbqkbnr/1pp2ppp/3p4/p3p3/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 21188871057 508532905368
---
> rnbqkbnr/1pp2ppp/3p4/p3p3/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 21188864257 508532742168
41240c41240
< rnbqkbnr/1pp2ppp/3p4/p3p3/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 20811621188 499478908512
---
> rnbqkbnr/1pp2ppp/3p4/p3p3/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 20811617910 499478829840
58523c58523
< rnbqkbnr/1pp2ppp/p2p4/4p3/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 16969695365 407272688760
---
> rnbqkbnr/1pp2ppp/p2p4/4p3/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 16969689025 407272536600
58925c58925
< rnbqkbnr/1pp2ppp/p2p4/4p3/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 16841872525 404204940600
---
> rnbqkbnr/1pp2ppp/p2p4/4p3/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 16841869001 404204856024
67497c67497
< rnbqkbnr/1pp2ppp/p3p3/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 24459058773 587017410552
---
> rnbqkbnr/1pp2ppp/p3p3/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 24459057097 587017370328
67899c67899
< rnbqkbnr/1pp2ppp/p3p3/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 23864613087 572750714088
---
> rnbqkbnr/1pp2ppp/p3p3/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 23864611895 572750685480
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pkumar
- Posts: 100
- Joined: Tue Oct 15, 2013 5:45 pm
Post
by pkumar »
My results:
Code: Select all
nameless> perft 7
(CR to end input) epdfile=perftSE22.epd
rnbqkbnr/1pp2ppp/3p4/p3p3/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 21188864257 ;#1
perft D7: 21188864257
rnbqkbnr/1pp2ppp/3p4/p3p3/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 20811617910 ;#2
perft D7: 20811617910
rnbqkbnr/1pp2ppp/p2p4/4p3/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 16969689025 ;#3
perft D7: 16969689025
rnbqkbnr/1pp2ppp/p2p4/4p3/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 16841869001 ;#4
perft D7: 16841869001
rnbqkbnr/1pp2ppp/p3p3/3p4/6P1/4PK2/PPPP1P1P/RNBQ1BNR b kq - 0 4 24 24459057097 ;#5
perft D7: 24459057097
rnbqkbnr/1pp2ppp/p3p3/3p4/8/2P1PK2/PP1P1PPP/RNBQ1BNR b kq - 1 4 24 23864611895 ;#6
perft D7: 23864611895
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sje
- Posts: 4675
- Joined: Mon Mar 13, 2006 7:43 pm
Post
by sje »
Thank you for your verification calculations.
It is only by such independent calculations that errors due to cosmic rays can be detected.
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Symbolic has produced more than 55,300,000 perft(7) results so far, about 57.37% of the 96,400,068 needed.