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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Kc4 draw
3 Kc6 draw
4 Ra8 draw
5 Rc6 draw
6 Rc7 draw
7 Rd8 draw
8 Re8 draw
9 Rf8 draw
10 Rh8 draw
11 Kd4 loss in 2 half-moves
12 Kd5 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Rg8 loss in 2 half-moves
15 Kb4 loss in 1 half-moves
16 Kb5 loss in 1 half-moves
17 Kb6 loss in 1 half-moves