Checkmate puzzles for intermediate players

Checkmate in 9

1.G*2b 2.Kx1c 3.G1b 4.Kx1b 5.S*1c 6.Kx1c 7.B*3a 8.K1b 9.B2b+

1.S*2c 2.Nx2c 3.S*3a 4.K1b 5.+Rx3b 6.Bx3b 7.G*2b

1.S3a 2.Kx3a 3.R4a+ 4.Kx4a 5.R5a+ 6.Kx5a 7.P5b+

1.G*1c 2.Nx1c 3.S*2a 4.K2c 5.Rx3b+ 6.Sx3b 7.G*2d

1.B4d+ 2.K2a 3.+Rx2c 4.Sx2c 5.P*2b 6.K3b 7.+B3c

1.N*3d 2.K2a 3.+Rx2c 4.Sx2c 5.P*2b 6.K3b 7.B4b+

1.R3c+ 2.Nx3c 3.S*1d 4.K2b 5.S2c+ 6.K2a 7.+B3b

1.G*2a 2.Gx2a 3.Nx2a+ 4.Kx2a 5.G*2b

1.+Bx2b 2.Kx2b 3.G*3b 4.K2c 5.R2a+

1.P*1d 2.Kx1d 3.N*2f 4.K1c 5.L*1d