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

EGTB: win in 4 half-moves

# move score
1 Rg7 win in 3 half-moves
2 Kh7 win in 7 half-moves
3 Rh2 win in 7 half-moves
4 Ke7 win in 11 half-moves
5 Kgf7 win in 13 half-moves
6 Ke8 draw
7 Kff7 draw
8 Kfg7 draw
9 Kgg7 draw
10 Kh8 draw
11 Ra2 draw
12 Rf2 draw
13 Rg1 draw
14 Rg6 draw
15 Rb2 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rd2 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Rg3 loss in 2 half-moves
20 Rg4 loss in 2 half-moves
21 Rg5 loss in 2 half-moves