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

EGTB: win in 4 half-moves

# move score
1 Rc1 win in 3 half-moves
2 Rc2 win in 3 half-moves
3 Rc3 win in 3 half-moves
4 Rb6 draw
5 Rc4 draw
6 Rc5 draw
7 Re6 draw
8 Rg6 draw
9 Kg1 loss in 2 half-moves
10 Kg2 loss in 2 half-moves
11 Kg3 loss in 2 half-moves
12 Kh1 loss in 2 half-moves
13 Kh3 loss in 2 half-moves
14 Ra6 loss in 2 half-moves
15 Rc7 loss in 2 half-moves
16 Rc8 loss in 2 half-moves
17 Rd6 loss in 2 half-moves
18 Rf6 loss in 2 half-moves
19 Rh6 loss in 2 half-moves