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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 K8a7 win in 7 half-moves
3 K8b7 win in 7 half-moves
4 Kb5 win in 7 half-moves
5 Kb6 win in 7 half-moves
6 K6a7 draw
7 K6b7 draw
8 Ka5 draw
9 Kb8 draw
10 Rc8 draw
11 Rd8 draw
12 Re2 draw
13 Re6 draw
14 Re7 draw
15 Rf8 draw
16 Re1 loss in 2 half-moves
17 Re3 loss in 2 half-moves
18 Re4 loss in 2 half-moves
19 Re5 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves