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 Rc8 draw
3 Rd8 draw
4 Re2 draw
5 Re5 draw
6 Re6 draw
7 Re7 draw
8 Rh8 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 Re1 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves