Checkmate puzzles for intermediate players

Checkmate in 7

1.+R2b 2.Kx2b 3.G*2c 4.K2a 5.P*2b 6.K3a 7.G3b

1.B1b+ 2.Lx1b 3.P*2b 4.K1a 5.+R3a

1.R*1a 2.Gx1a 3.Bx1a+ 4.Kx1a 5.+R1c 6.G*1b 7.G*2b

1.R2a+ 2.Kx2a 3.B3a+ 4.Kx3a 5.N4b+ 6.K2a 7.+N3b 8.K1b 9.+N2b

1.N*1c 2.Lx1c 3.S*1b 4.Kx1b 5.N*2d 6.Gx2d 7.G*2b

1.N*2c 2.Gx2c 3.+L2a 4.Kx2a 5.+Rx2c 6.G*2b 7.G*3b

1.+R2c 2.Kx2c 3.B3d+ 4.K1d 5.P*1e 6.Kx1e 7.+B2e

1.B1c+ 2.Kx1c 3.P1d 4.K2c 5.N*1e

1.+Bx2b 2.Kx2b 3.G*3c 4.Nx3c 5.B3a+ 6.K1b 7.S2a

1.S*2c 2.Kx2c 3.R2a+ 4.L*2b 5.S*3b