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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Kb2 draw
3 Kd1 draw
4 Kd2 draw
5 Kf1 draw
6 Kf2 draw
7 Kg1 draw
8 Kg3 draw
9 Kh1 draw
10 Kh2 draw
11 Kh3 draw
12 Ra8 draw
13 Kb1 loss in 2 half-moves
14 Kb3 loss in 2 half-moves
15 Kc1 loss in 2 half-moves
16 Kc3 loss in 2 half-moves
17 Kd3 loss in 2 half-moves
18 Kf3 loss in 2 half-moves
19 Ra1 loss in 2 half-moves
20 Ra3 loss in 2 half-moves
21 Ra4 loss in 2 half-moves
22 Ra5 loss in 2 half-moves
23 Ra6 loss in 2 half-moves
24 Ra7 loss in 2 half-moves