Odd arrows

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You can draw arrows with your piece and your piece, or your piece and your opponent's piece, but I don't think it is necessary.
This is a minor detail, but please consider it if you have the extra power.

自分の駒と自分の駒、自分の駒と相手の駒で矢印を引くことが出来ますが、必要ないと思います。
些細な事ではありますが、余力がありましたらご一考ください。

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