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

EGTB: win in 4 half-moves

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