
Solution
1.Rx3d

if 2.Gx3d, 3.B*7a 4.R5b 5.Sx6c+
1.Rx3d
if 2.Gx3d, 3.B*7a 4.R5b 5.Sx6c+
1.P2c+
if 2.Rx2c, 3.B*4a. if 2.Gx2c, 3.B*3b
1.P*1c 2.Kx1c 3.S2b 4.K1b 5.L*1c
1.B7a+ 2.Gx7a 3.S*6c 4.K6a 5.Bx7a+ 6.Kx7a 7.G*7b
1.Sx3d
if 2.Gx3d, 3.Rx5c+
1.N4e
if 2.Px4e, 3.Bx3c+ 4.Nx3c 5.Rx3e
1.S*1d
1.S2a 2.K1a 3.S1b+ 4.Kx1b 5.+B2a
1.R*6i(R*7i)
Black will win material.
1.P*8e
there’s no way to save the Rook on 8f for White.