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

EGTB: win in 4 half-moves

# move score
1 Rg5 win in 3 half-moves
2 Kg4 draw
3 Kg5 draw
4 Kg6 draw
5 Kh4 draw
6 Kh6 draw
7 Rc5 draw
8 Rd5 draw
9 Re1 draw
10 Rf5 draw
11 Ra5 loss in 2 half-moves
12 Rb5 loss in 2 half-moves
13 Re2 loss in 2 half-moves
14 Re3 loss in 2 half-moves
15 Re4 loss in 2 half-moves
16 Re6 loss in 2 half-moves
17 Re7 loss in 2 half-moves
18 Re8 loss in 2 half-moves