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

EGTB: win in 4 half-moves

# move score
1 Rg3 win in 3 half-moves
2 Rh3 win in 3 half-moves
3 Rc1 draw
4 Rc6 draw
5 Rc7 draw
6 Rc8 draw
7 Rd3 draw
8 Re3 draw
9 Rf3 draw
10 K7g7 loss in 2 half-moves
11 K7g8 loss in 2 half-moves
12 K8g7 loss in 2 half-moves
13 K8g8 loss in 2 half-moves
14 Kg6 loss in 2 half-moves
15 Kh6 loss in 2 half-moves
16 Ra3 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rc2 loss in 2 half-moves
19 Rc4 loss in 2 half-moves
20 Rc5 loss in 2 half-moves