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

EGTB: win in 2 half-moves

# move score
1 Ra7 win in 1 half-moves
2 Kb6 draw
3 Kb8 draw
4 Kc6 draw
5 Kc8 draw
6 Kd8 draw
7 Rb6 draw
8 Kd7 loss in 2 half-moves
9 Kg1 loss in 2 half-moves
10 Kg2 loss in 2 half-moves
11 Kg3 loss in 2 half-moves
12 Kh1 loss in 2 half-moves
13 Kh3 loss in 2 half-moves
14 Rb1 loss in 2 half-moves
15 Rb2 loss in 2 half-moves
16 Rb3 loss in 2 half-moves
17 Rb4 loss in 2 half-moves
18 Rb5 loss in 2 half-moves
19 Rb8 loss in 2 half-moves
20 Kd6 loss in 1 half-moves