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

EGTB: win in 2 half-moves

# move score
1 Rb1 win in 1 half-moves
2 Kd8 draw
3 Ke1 draw
4 Kf8 draw
5 Kg1 draw
6 Kg2 draw
7 Ra2 draw
8 Ra6 draw
9 Ra7 draw
10 Ra8 draw
11 Kd7 loss in 2 half-moves
12 Ke2 loss in 2 half-moves
13 Ke7 loss in 2 half-moves
14 Kf2 loss in 2 half-moves
15 Kf7 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Ra4 loss in 2 half-moves
18 Ra5 loss in 2 half-moves
19 Rc1 loss in 2 half-moves
20 Rd1 loss in 2 half-moves
21 Re1 loss in 2 half-moves