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

EGTB: win in 4 half-moves

# move score
1 Ke4 win in 3 half-moves
2 Re6 draw
3 Re7 draw
4 Re8 draw
5 Kd1 loss in 2 half-moves
6 Kd2 loss in 2 half-moves
7 Kee2 loss in 2 half-moves
8 Kef2 loss in 2 half-moves
9 Kf1 loss in 2 half-moves
10 Kf4 loss in 2 half-moves
11 Kfe2 loss in 2 half-moves
12 Kff2 loss in 2 half-moves
13 Kg2 loss in 2 half-moves
14 Kg3 loss in 2 half-moves
15 Kg4 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rc3 loss in 2 half-moves
19 Rd3 loss in 2 half-moves
20 Re2 loss in 2 half-moves
21 Re4 loss in 2 half-moves
22 Re5 loss in 2 half-moves