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 K5g5 draw
3 K5g6 draw
4 K6g5 draw
5 K6g6 draw
6 Kg4 draw
7 Kg7 draw
8 Kh4 draw
9 Kh7 draw
10 Rd7 draw
11 Re1 draw
12 Re8 draw
13 Rf7 draw
14 Rh7 draw
15 Ra7 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Rc7 loss in 2 half-moves
18 Re2 loss in 2 half-moves
19 Re3 loss in 2 half-moves
20 Re4 loss in 2 half-moves
21 Re5 loss in 2 half-moves
22 Re6 loss in 2 half-moves