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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka7 draw
3 Kb2 draw
4 Kb3 draw
5 Kb4 draw
6 Kb7 draw
7 Kb8 draw
8 Kc2 draw
9 Kc4 draw
10 Kd2 draw
11 Kd3 draw
12 Kd4 draw
13 Rd8 draw
14 Re8 draw
15 Rf8 draw
16 Rc4 loss in 2 half-moves
17 Rc5 loss in 2 half-moves
18 Rc6 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves