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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Kc7 win in 7 half-moves
4 Kc8 win in 7 half-moves
5 Kc6 win in 11 half-moves
6 Ka4 draw
7 Ka7 draw
8 Ka8 draw
9 Kaa6 draw
10 Kab6 draw
11 Kb4 draw
12 Kb5 draw
13 Kb8 draw
14 Kba6 draw
15 Kbb6 draw
16 Ra1 draw
17 Rc1 draw
18 Rh1 draw
19 Rb2 loss in 2 half-moves
20 Rb3 loss in 2 half-moves
21 Rb4 loss in 2 half-moves
22 Rd1 loss in 2 half-moves
23 Re1 loss in 2 half-moves
24 Rf1 loss in 2 half-moves
25 Rg1 loss in 2 half-moves