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

EGTB: win in 2 half-moves

# move score
1 Kg5 win in 1 half-moves
2 Kg6 win in 1 half-moves
3 Re1 win in 1 half-moves
4 Re2 win in 1 half-moves
5 Re3 win in 1 half-moves
6 Ke5 loss in 2 half-moves
7 Ke6 loss in 2 half-moves
8 Kf4 loss in 2 half-moves
9 Kf6 loss in 2 half-moves
10 Ra4 loss in 2 half-moves
11 Rb4 loss in 2 half-moves
12 Rc4 loss in 2 half-moves
13 Rd4 loss in 2 half-moves
14 Re5 loss in 2 half-moves
15 Re6 loss in 2 half-moves
16 Re7 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Rh4 loss in 2 half-moves
20 Kg4 loss in 1 half-moves
21 Rg4 loss in 1 half-moves