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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Rb8 draw
3 Rf7 draw
4 Rg7 draw
5 Rh7 draw
6 Ka5 loss in 2 half-moves
7 Ka6 loss in 2 half-moves
8 Ka7 loss in 2 half-moves
9 Kb4 loss in 2 half-moves
10 Kbb5 loss in 2 half-moves
11 Kbc6 loss in 2 half-moves
12 Kc4 loss in 2 half-moves
13 Kcb5 loss in 2 half-moves
14 Kcc6 loss in 2 half-moves
15 Kd4 loss in 2 half-moves
16 Kd5 loss in 2 half-moves
17 Kd6 loss in 2 half-moves
18 Ra7 loss in 2 half-moves
19 Rc7 loss in 2 half-moves
20 Rd7 loss in 2 half-moves
21 Re7 loss in 2 half-moves