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

EGTB: win in 4 half-moves

# move score
1 Kb8 win in 3 half-moves
2 Re8 draw
3 Rf8 draw
4 Rg8 draw
5 Ka6 loss in 2 half-moves
6 Kab6 loss in 2 half-moves
7 Kab7 loss in 2 half-moves
8 Kb5 loss in 2 half-moves
9 Kc5 loss in 2 half-moves
10 Kc7 loss in 2 half-moves
11 Kcb6 loss in 2 half-moves
12 Kcb7 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Kd6 loss in 2 half-moves
15 Kd7 loss in 2 half-moves
16 Rb8 loss in 2 half-moves
17 Rc8 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Rh8 loss in 2 half-moves