
Solution
1.L*8h

1a-Promoted Bishop controls 8h-square. the Promoted Rook is trapped.
1.L*8h
1a-Promoted Bishop controls 8h-square. the Promoted Rook is trapped.
1.P*8e
if 2.Rx8e, 3.B*7d. 1.P*8e threatens S8g Rx8e B*7d, B*7d G5b S8g and B*8b.
1.P*7d
if 2.Sx7d, 3.B*5d
1.+Bx2b 2.Kx2b 3.G*3c 4.Nx3c 5.B3a+ 6.K1b 7.S2a
1.B3d+ 2.+Rx3d 3.+B2a
1.S*2c 2.Kx2c 3.R2a+ 4.L*2b 5.S*3b
1.N1c+ 2.Kx1c 3.R2a+
1.B*4a
if 2.R8d, 3.B5b+
1.P*3c
if 2.Gx3c(Bx3c), 3.N4e. if 2.Nx3c, 3.P*3d
1.G*3b 2.K1b 3.R*2b 4.Gx2b 5.Gx2b 6.Kx2b 7.P*2c 8.K3b 9.G*4b