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 Kaa4 draw
3 Kaa6 draw
4 Kab4 draw
5 Kab6 draw
6 Kba4 draw
7 Kba6 draw
8 Kbb4 draw
9 Kbb6 draw
10 Kc4 draw
11 Kc5 draw
12 Kc6 draw
13 Ra3 draw
14 Rc3 draw
15 Rd3 draw
16 Re3 draw
17 Rf3 draw
18 Rb1 loss in 2 half-moves
19 Rb2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rh3 loss in 2 half-moves