Try: https://dl.dropboxusercontent.com/u/316 ... /ToughGuyspkumar wrote:I shall appreciate a few positions to take my engine through hoops (e.p., promotions, castling, etc.).
And: https://dl.dropboxusercontent.com/u/316 ... ar/Largest
A perft(7) challenge position
Moderators: hgm, Rebel, chrisw
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sje
- Posts: 4675
- Joined: Mon Mar 13, 2006 7:43 pm
Re: A perft(7) challenge position
And: https://dl.dropboxusercontent.com/u/316 ... ar/Largest
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geko
- Posts: 36
- Joined: Fri Sep 06, 2013 11:20 am
- Location: Italy
- Full name: Giuseppe Cannella
Re: A perft(7) challenge position
./cinnamon -perft -f"rnb1kbnr/pp1pp1pp/1qp2p2/8/Q1P5/N7/PP1PPPPP/1RB1KBNR b Kkq - 2 4" -d 7 -h5000 -c4
Perft moves: 14794751816 in 32 seconds 785 millsec (462000k nodes per seconds)
Perft moves: 14794751816 in 32 seconds 785 millsec (462000k nodes per seconds)
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Roman Hartmann
- Posts: 295
- Joined: Wed Mar 08, 2006 8:29 pm
Re: A perft(7) challenge position
Roce 0.0395 gets this one not right either. I know what's wrong but as it's a design flaw it's not that easy to fix. It's not related to hashing as I don't use hash in perft but rather due the improper way I handle the castling flags in my old engine.
The engine I'm working on get's it right even though it's rather complicated mix of 0x88 and bitboard to get the best of both worlds.
Roce 0.0395
Perft (7): 14794474706, Time: 209.810 s [WRONG]
Current engine (not based on previous versions of Roce)
Perft (7): 14794751816 [OK]
Regards
Roman
The engine I'm working on get's it right even though it's rather complicated mix of 0x88 and bitboard to get the best of both worlds.
Roce 0.0395
Perft (7): 14794474706, Time: 209.810 s [WRONG]
Current engine (not based on previous versions of Roce)
Perft (7): 14794751816 [OK]
Regards
Roman