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Does imbalance support multiple queens? #47

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rozim opened this issue Dec 1, 2017 · 2 comments
Closed

Does imbalance support multiple queens? #47

rozim opened this issue Dec 1, 2017 · 2 comments

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@rozim
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rozim commented Dec 1, 2017

I want to find games where one side has 2 Q's and the other side has a Q and 2 R's.

I tried this:
./scoutfish scout ./mega-filtered.scout '{ "imbalance": "QQvQRR" }'

and spot checked one result and the game had a Q vs 2 R's, but not what I wanted
(QQ vs QRR).

@gbtami
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gbtami commented Dec 2, 2017

This is because "imbalance" means: difference in material. In this case this is queen vs rook+rook.
Unfortunately scoutfish has no rule to express that one side has at least two queens.

To demonstrate the query works as expected here is one hit from enormous.pgn using pychess
http://i.imgur.com/LicU4Fl.png

@rozim
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rozim commented Dec 2, 2017

Ah, QED, I get it.
Thanks for quick reply.
WAI.

  • Dave

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