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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kf4 draw
3 Kf5 draw
4 Kg5 draw
5 Kh3 draw
6 Kh4 draw
7 Kh5 draw
8 Ra3 draw
9 Ra5 draw
10 Re4 draw
11 Ra6 loss in 4 half-moves
12 Ra7 loss in 4 half-moves
13 Kf3 loss in 2 half-moves
14 Kg3 loss in 2 half-moves
15 Ra1 loss in 2 half-moves
16 Ra2 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rd4 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Ra8 loss in 1 half-moves