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

EGTB: win in 4 half-moves

# move score
1 Rh4 win in 3 half-moves
2 Kh4 draw
3 Ra2 draw
4 Rh1 draw
5 Rh3 draw
6 Kg4 loss in 2 half-moves
7 Kg5 loss in 2 half-moves
8 Kg6 loss in 2 half-moves
9 Kh6 loss in 2 half-moves
10 Rb2 loss in 2 half-moves
11 Rc2 loss in 2 half-moves
12 Rd2 loss in 2 half-moves
13 Re2 loss in 2 half-moves
14 Rf2 loss in 2 half-moves
15 Rg2 loss in 2 half-moves