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

EGTB: win in 4 half-moves

# move score
1 Ke5 win in 3 half-moves
2 Re1 draw
3 Re2 draw
4 K6c7 loss in 2 half-moves
5 K6d7 loss in 2 half-moves
6 K6e7 loss in 2 half-moves
7 K8c7 loss in 2 half-moves
8 K8d7 loss in 2 half-moves
9 K8e7 loss in 2 half-moves
10 Kc5 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Kc8 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Ke8 loss in 2 half-moves
15 Re3 loss in 2 half-moves
16 Re4 loss in 2 half-moves
17 Re5 loss in 2 half-moves
18 Re7 loss in 2 half-moves
19 Re8 loss in 2 half-moves
20 Rf6 loss in 2 half-moves
21 Rg6 loss in 2 half-moves
22 Rh6 loss in 2 half-moves