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

EGTB: win in 4 half-moves

# move score
1 Rg4 win in 3 half-moves
2 Rb4 draw
3 Rc5 draw
4 Rc6 draw
5 Rc7 draw
6 Rd4 draw
7 Re4 draw
8 Rf4 draw
9 Kg3 loss in 2 half-moves
10 Kg4 loss in 2 half-moves
11 Kg5 loss in 2 half-moves
12 Kh3 loss in 2 half-moves
13 Kh5 loss in 2 half-moves
14 Ra4 loss in 2 half-moves
15 Rc1 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc8 loss in 2 half-moves