Cutechess-cli illegal PV move

[IanKennedy]

Is it possible to suppress warning messages like the above? Its not just my own engine as I now see Gull3 is at it too

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Warning: PV: Bc7 Kb3 Kf7 Nc3 Bd8 Kc2 Ke7 Nb1 Kf7 Kd2 Be7 Nc3 Bd8 Na4 Bc7 Be1 Bd8 Kc3 Ke7 d2c2
Warning: Illegal PV move f6e7 from Gull3 (43)

[RubiChess]

cutechess seems to use qWarning for that and the Qt docu for qWarning says "If no message handler has been installed, the message is printed to stderr." So you can try

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cutechess-cli ... 2>nul

(in Windows) to avoid output of stderr. But you may also lose some more output of cutechess.

And even better solution: Fix the engines.

Regards, Andreas

[IanKennedy]

cutechess seems to use qWarning for that and the Qt docu for qWarning says "If no message handler has been installed, the message is printed to stderr." So you can try

Code: Select all

cutechess-cli ... 2>nul

(in Windows) to avoid output of stderr. But you may also lose some more output of cutechess.

And even better solution: Fix the engines.

Regards, Andreas

In my own case I have a move in the pv after a mate due to delayed detection of mates in the search. I could tidy it up but its a bit of a PITA. I can't speak for Gull3 of course...except to say its a lot faster than Psycho and I get a whole screenfull of this each move.

[maksimKorzh]

Is it possible to suppress warning messages like the above? Its not just my own engine as I now see Gull3 is at it too

Code: Select all

Warning: PV: Bc7 Kb3 Kf7 Nc3 Bd8 Kc2 Ke7 Nb1 Kf7 Kd2 Be7 Nc3 Bd8 Na4 Bc7 Be1 Bd8 Kc3 Ke7 d2c2
Warning: Illegal PV move f6e7 from Gull3 (43)

I had someone reported this issue ones - the problem was in wrong move being stored in the PV due to 3 fold repetition.
I guess if not cutechess-cli no one would ever be aware of this bug)

Your PV seems like a 3 fold repetition to me, isn't it?

[IanKennedy]

Is it possible to suppress warning messages like the above? Its not just my own engine as I now see Gull3 is at it too

Code: Select all

Warning: PV: Bc7 Kb3 Kf7 Nc3 Bd8 Kc2 Ke7 Nb1 Kf7 Kd2 Be7 Nc3 Bd8 Na4 Bc7 Be1 Bd8 Kc3 Ke7 d2c2
Warning: Illegal PV move f6e7 from Gull3 (43)

I had someone reported this issue ones - the problem was in wrong move being stored in the PV due to 3 fold repetition.
I guess if not cutechess-cli no one would ever be aware of this bug)

Your PV seems like a 3 fold repetition to me, isn't it?

That's not my code, and I'm not sure what Gull's issue is - here's another sample where it lists c6e7 but it had a king on c6...?

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Warning: Illegal PV move c6e7 from Gull3 (116)
Warning: PV: Kc6 Na4 Nc2 Kf1 c6e7
Warning: Illegal PV move c6e7 from Gull3 (116)
Warning: PV: Kc6 Na4 Nc2 Kf1 c6e7
Warning: Illegal PV move c6e7 from Gull3 (116)
Warning: PV: Kc6 Na4 Nc2 Kf1 c6e7

I don't have a sample of my own case to hand right now but its a known issue. I detect mates two plies below and that has caused an illegal move to appear in the pv. Everyone else (eg Arena) has politely ignored it.