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

EGTB: win in 4 half-moves

# move score
1 Ke6 win in 3 half-moves
2 Re2 draw
3 Re3 draw
4 Re4 draw
5 Kc6 loss in 2 half-moves
6 Kc7 loss in 2 half-moves
7 Kc8 loss in 2 half-moves
8 Kd6 loss in 2 half-moves
9 Kd8 loss in 2 half-moves
10 Kde8 loss in 2 half-moves
11 Kf7 loss in 2 half-moves
12 Kfe8 loss in 2 half-moves
13 Kg7 loss in 2 half-moves
14 Kg8 loss in 2 half-moves
15 Re1 loss in 2 half-moves
16 Re5 loss in 2 half-moves
17 Re6 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh7 loss in 2 half-moves