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

EGTB: win in 2 half-moves

# move score
1 Rb7 win in 1 half-moves
2 Kc7 draw
3 Kc8 draw
4 Kd8 draw
5 Ke8 draw
6 Ra4 draw
7 Ra6 draw
8 Ra8 draw
9 Ke7 loss in 14 half-moves
10 Ra1 loss in 4 half-moves
11 Kc6 loss in 2 half-moves
12 Kd6 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ra2 loss in 2 half-moves
15 Ra3 loss in 2 half-moves
16 Rc7 loss in 2 half-moves
17 Ra5 loss in 1 half-moves