二に歩ふ

noun

two pawns on the same file; illegal double pawn drop

Shogi term for the illegal move of dropping a second unpromoted pawn onto a file that already contains one of the player's unpromoted pawns.

• 二に歩ふは反はん則そく負まけになる。

  Making a double pawn drop results in a loss by foul.

• 初しょ心しん者しゃはうっかり二に歩ふを打うってしまうことがある。

  Beginners sometimes accidentally make an illegal double pawn drop.