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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Kg5 win in 5 half-moves
3 Kg6 draw
4 Kg7 draw
5 Kh5 draw
6 Kh7 draw
7 Rh2 draw
8 Ra1 loss in 2 half-moves
9 Rb1 loss in 2 half-moves
10 Rc1 loss in 2 half-moves
11 Rd1 loss in 2 half-moves
12 Rf1 loss in 2 half-moves
13 Rg1 loss in 2 half-moves
14 Rh3 loss in 2 half-moves
15 Rh4 loss in 2 half-moves
16 Rh5 loss in 2 half-moves