Solution
1.B3a+ 2.Gx3a 3.R1b+
1.B3a+ 2.Gx3a 3.R1b+
1.R1b+ 2.Kx1b 3.B3a+
1.R*1d 2.P*1c 3.G*2b
1.B1c+ 2.Kx1c 3.L*1d
1.R*1a 2.Kx1a 3.G*2b
1.Bx1c+ 2.Kx1c 3.G*2c
1.R*1a 2.Kx1a 3.B2a+
1.S*2c 2.K3a 3.G*3b
1.Bx2a+ 2.Kx2a 3.G*2b
1.B1a+ 2.Kx1a 3.G*2b