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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kc4 draw
3 Kc5 draw
4 Kd5 draw
5 Ke4 draw
6 Ke5 draw
7 Ra3 draw
8 Ra5 draw
9 Ra6 draw
10 Ra8 draw
11 Kc3 loss in 2 half-moves
12 Kd3 loss in 2 half-moves
13 Ke3 loss in 2 half-moves
14 Ra1 loss in 2 half-moves
15 Ra2 loss in 2 half-moves
16 Ra7 loss in 2 half-moves
17 Rc4 loss in 2 half-moves