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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 Ra1 draw
3 Rc1 draw
4 Rd1 draw
5 Re1 draw
6 Rf1 draw
7 Rg6 draw
8 Rg7 draw
9 Rg8 draw
10 K3b3 loss in 2 half-moves
11 K3b4 loss in 2 half-moves
12 K4b3 loss in 2 half-moves
13 K4b4 loss in 2 half-moves
14 Ka2 loss in 2 half-moves
15 Ka5 loss in 2 half-moves
16 Kb2 loss in 2 half-moves
17 Kb5 loss in 2 half-moves
18 Rg2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rg5 loss in 2 half-moves
22 Rh1 loss in 2 half-moves