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

EGTB: win in 4 half-moves

# move score
1 Rg8 win in 3 half-moves
2 Rc1 draw
3 Rc3 draw
4 Rc5 draw
5 Re8 draw
6 Rf8 draw
7 Rh8 loss in 4 half-moves
8 Kg4 loss in 2 half-moves
9 Kg5 loss in 2 half-moves
10 Kg6 loss in 2 half-moves
11 Kh4 loss in 2 half-moves
12 Kh6 loss in 2 half-moves
13 Ra8 loss in 2 half-moves
14 Rb8 loss in 2 half-moves
15 Rc2 loss in 2 half-moves
16 Rc4 loss in 2 half-moves
17 Rc6 loss in 2 half-moves
18 Rc7 loss in 2 half-moves
19 Rd8 loss in 2 half-moves