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

EGTB: win in 4 half-moves

# move score
1 Kb1 win in 3 half-moves
2 Rb5 win in 5 half-moves
3 Rb6 win in 5 half-moves
4 Ka2 draw
5 Kc4 draw
6 Kc5 draw
7 Kc6 draw
8 Kd4 draw
9 Kd6 draw
10 Ke4 draw
11 Ke5 draw
12 Ke6 draw
13 Ra3 draw
14 Rb2 draw
15 Rb4 draw
16 Rb7 draw
17 Rb8 draw
18 Rf3 draw
19 Rb1 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rd3 loss in 2 half-moves
22 Re3 loss in 2 half-moves
23 Rg3 loss in 2 half-moves
24 Rh3 loss in 2 half-moves
25 Kb2 loss in 1 half-moves