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

EGTB: win in 4 half-moves

# move score
1 Ka7 win in 3 half-moves
2 Kaa5 win in 3 half-moves
3 Rb7 win in 3 half-moves
4 Kb7 win in 7 half-moves
5 Rb8 win in 7 half-moves
6 Ka4 draw
7 Kc4 draw
8 Kc5 draw
9 Kb4 loss in 2 half-moves
10 Kba5 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Rc6 loss in 2 half-moves
13 Rd6 loss in 2 half-moves
14 Re6 loss in 2 half-moves
15 Rf6 loss in 2 half-moves
16 Rg6 loss in 2 half-moves
17 Rh6 loss in 2 half-moves