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

EGTB: win in 4 half-moves

# move score
1 Rc8 win in 3 half-moves
2 K7a7 draw
3 K7a8 draw
4 K7c8 draw
5 K8a7 draw
6 K8a8 draw
7 K8c8 draw
8 Ka6 draw
9 Kb6 draw
10 Rg1 draw
11 Rg7 draw
12 Rh8 draw
13 K7c7 loss in 2 half-moves
14 K8c7 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg2 loss in 2 half-moves
20 Rg3 loss in 2 half-moves
21 Rg4 loss in 2 half-moves
22 Rg5 loss in 2 half-moves
23 Rg6 loss in 2 half-moves