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 K5g6 win in 9 half-moves
3 Kg4 win in 9 half-moves
4 K6g6 win in 11 half-moves
5 Kh4 win in 11 half-moves
6 K5g5 draw
7 K6g5 draw
8 Kg7 draw
9 Ra7 draw
10 Re7 draw
11 Rf7 draw
12 Rh8 draw
13 Rb7 loss in 2 half-moves
14 Rc7 loss in 2 half-moves
15 Rd7 loss in 2 half-moves