Solution
1.B1b+
1.B1b+
1.R*2a 2.Kx2a 3.G*3b
1.B3b+ 2.K1a 3.N*2c
1.+B1b 2.Kx1b 3.G*1c
1.+Rx2a 2.Kx2a 3.G*1b
1.N1a+ 2.Kx1a 3.+B2b 4.Kx2b 5.P2c+ 6.K1a 7.+P1b
1.B2c+ 2.Kx2c 3.R2a+ 4.L*2b 5.N*3e
1.S*1c 2.Gx1c 3.G*2b
1.R2c+
1.R1a+ 2.Kx1a 3.L*1c 4.K2a 5.L1b+