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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Ka2 draw
3 Ka4 draw
4 Ka5 draw
5 Ka6 draw
6 Kb1 draw
7 Kb2 draw
8 Kb4 draw
9 Kb6 draw
10 Kc4 draw
11 Kc5 draw
12 Kc6 draw
13 Ra3 draw
14 Rc3 draw
15 Rd3 draw
16 Re3 draw
17 Rg3 draw
18 Rh3 draw
19 Rb1 loss in 2 half-moves
20 Rb2 loss in 2 half-moves
21 Rf3 loss in 2 half-moves