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

EGTB: win in 4 half-moves

# move score
1 Rh6 win in 3 half-moves
2 Rh8 win in 3 half-moves
3 Ke6 win in 7 half-moves
4 Ke7 win in 7 half-moves
5 Ke8 win in 7 half-moves
6 Kff6 win in 7 half-moves
7 Kff8 win in 7 half-moves
8 Kfg6 win in 7 half-moves
9 Kfg8 win in 7 half-moves
10 Kh8 win in 7 half-moves
11 Rh1 win in 7 half-moves
12 Rh5 win in 7 half-moves
13 Kh6 win in 13 half-moves
14 Kgf6 draw
15 Kgf8 draw
16 Kgg6 draw
17 Kgg8 draw
18 Rh2 loss in 2 half-moves
19 Rh3 loss in 2 half-moves
20 Rh4 loss in 2 half-moves