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 Rh4 win in 3 half-moves
3 Rf4 win in 5 half-moves
4 Rc2 draw
5 Rc7 draw
6 Rc8 draw
7 Rd4 draw
8 Re4 draw
9 Kf6 loss in 2 half-moves
10 Kf7 loss in 2 half-moves
11 Kf8 loss in 2 half-moves
12 Kg6 loss in 2 half-moves
13 Kgg8 loss in 2 half-moves
14 Kgh7 loss in 2 half-moves
15 Kh6 loss in 2 half-moves
16 Khg8 loss in 2 half-moves
17 Khh7 loss in 2 half-moves
18 Ra4 loss in 2 half-moves
19 Rb4 loss in 2 half-moves
20 Rc1 loss in 2 half-moves
21 Rc3 loss in 2 half-moves
22 Rc5 loss in 2 half-moves
23 Rc6 loss in 2 half-moves