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 Kc5 win in 7 half-moves
3 K6a7 draw
4 K6b7 draw
5 K6c7 draw
6 K8a7 draw
7 K8b7 draw
8 K8c7 draw
9 Ka5 draw
10 Ka6 draw
11 Ka8 draw
12 Kb5 draw
13 Ra3 draw
14 Rb1 draw
15 Rb2 draw
16 Rb4 draw
17 Rc3 draw
18 Rh3 draw
19 Kc6 loss in 2 half-moves
20 Kc8 loss in 2 half-moves
21 Rd3 loss in 2 half-moves
22 Re3 loss in 2 half-moves
23 Rf3 loss in 2 half-moves
24 Rg3 loss in 2 half-moves