Take the interposer
MediumMate in 3Sente to play and mate in 3.
Defender's hand(no pieces in hand)
Your hand
Your move: start with a check.
Next Puzzle →Solution (USI notation)
Sente and Gote moves in order.
L*1c▲2a1b△2c1b+▲
Sente to play and mate in 3.
Sente and Gote moves in order.
L*1c ▲2a1b △2c1b+ ▲