Solution
1.S3a 2.Kx3a 3.R4a+ 4.Kx4a 5.R5a+ 6.Kx5a 7.P5b+
1.S3a 2.Kx3a 3.R4a+ 4.Kx4a 5.R5a+ 6.Kx5a 7.P5b+
1.R2d 2.Kx2d 3.R3d+
1.R3b+
1.L3c+ 2.Gx3c 3.N*3e
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.R1b+ 2.Kx1b 3.+B2b