Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rg1 win in 3 half-moves
2 Rg2 win in 3 half-moves
3 Rc6 draw
4 Rf6 draw
5 Rg3 draw
6 Rg4 draw
7 Rg7 draw
8 Kb1 loss in 2 half-moves
9 Kb2 loss in 2 half-moves
10 Kc2 loss in 2 half-moves
11 Kd1 loss in 2 half-moves
12 Kd2 loss in 2 half-moves
13 Ra6 loss in 2 half-moves
14 Rb6 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Re6 loss in 2 half-moves
17 Rg5 loss in 2 half-moves
18 Rg8 loss in 2 half-moves
19 Rh6 loss in 2 half-moves