How can you promote the Pawn on the 7d?
Solution
1.P*6c 2.Sx6c 3.P7c+
After 1.P*6c, no matter where the 6b-Silver goes, you can promote the pawn on 7d .
How can you promote the Pawn on the 7d?
1.P*6c 2.Sx6c 3.P7c+
After 1.P*6c, no matter where the 6b-Silver goes, you can promote the pawn on 7d .
How to win material
1.P*1b 2.Lx1b 3.P*1c
1.R3a+
1.Bx1c+ 2.Kx1c 3.L*1d
R2b
White can’t play G2a because the Bishop on 1c attacks 3a-square.
1.R*1a 2.Kx1a 3.L*1c 4.L*1b 5.N2c
1.S2d
1.B3a+ 2.K1b 3.R1d
White can’t play S2a because the Lance on 3d attacks 3a-square.