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

EGTB: win in 4 half-moves

# move score
1 Rb6 win in 3 half-moves
2 Rc6 draw
3 Rd6 draw
4 Re6 draw
5 Rh2 draw
6 Rh3 draw
7 Rh4 draw
8 Rh5 draw
9 K6a7 loss in 2 half-moves
10 K6b7 loss in 2 half-moves
11 K8a7 loss in 2 half-moves
12 K8b7 loss in 2 half-moves
13 Ka5 loss in 2 half-moves
14 Kb5 loss in 2 half-moves
15 Kb6 loss in 2 half-moves
16 Kb8 loss in 2 half-moves
17 Rf6 loss in 2 half-moves
18 Rg6 loss in 2 half-moves
19 Rh1 loss in 2 half-moves
20 Rh7 loss in 2 half-moves
21 Rh8 loss in 2 half-moves