Doesn't work with variant FENs?

[DeFilippis]

Hey Jarret,

If I run stockfish from the command line on a traditionally illegal FEN like so:

position pppppppp/pppppppp/pppppppp/ppppp1pp/1pp1ppp1/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2
go

Stockfish will work with it and yield a move choice. However, if I do the same with your Python wrapper (which is excellent, by the way) like this

deep = Engine()
deep.setfenposition("pppppppp/pppppppp/pppppppp/ppppp1pp/1pp1ppp1/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2")
print deep.bestmove()

The engine hangs indefinitely. Any ideas on how to fix this?

[iamjarret]

Hi Evan,

Thanks for the nice feedback! Here's one idea:

try running

engine.put("position pppppppp/pppppppp/pppppppp/
ppppp1pp/1pp1ppp1/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2")

does it work? If so, then your version of stockfish is using a different
UCI protocol. Change line 183 to remove the word "fen." Otherwise, try
running engine.isready(). If that freezes there is a problem reading
stockfish's output and I'd have to get back to you with a solution.

On Thu, Apr 9, 2015 at 10:55 AM, Evan DeFilippis notifications@github.com
wrote:

Hey Jarret,

If I run stockfish from the command line on a traditionally illegal FEN
like so:

position pppppppp/pppppppp/pppppppp/ppppp1pp/1pp1ppp1/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2
go

Stockfish will work with it and yield a move choice. However, if I do the
same with your Python wrapper (which is excellent, by the way) like this

deep = Engine()
deep.setfenposition("pppppppp/pppppppp/pppppppp/ppppp1pp/1pp1ppp1/8/PPPP1PPP/RNBQKBNR w KQkq - 0 2")
print deep.bestmove()

The engine hangs indefinitely. Any ideas on how to fix this?

—
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#6.

Jarret Petrillo
iamjarret.github.io
908-451-8373

[DeFilippis]

Hey Jarret,

Thanks! I had to manually do the work with "engine.put", and it worked. Thanks!

[iamjarret]

Great! You may have an old version of Stockfish installed.

On Thu, Apr 9, 2015 at 12:30 PM, Evan DeFilippis notifications@github.com
wrote:

Hey Jarret,

Thanks! I had to manually do the work with "engine.put", and it worked.
Thanks!

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#6 (comment).

Jarret Petrillo
iamjarret.github.io
908-451-8373