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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Ka7 draw
3 Ka8 draw
4 Kb7 draw
5 Kc8 draw
6 Ra1 draw
7 Ra2 draw
8 Ra3 draw
9 Ra8 draw
10 Rb4 draw
11 Rb6 draw
12 Rc4 draw
13 Rc6 draw
14 Rd4 draw
15 Rd6 draw
16 Re4 draw
17 Re6 draw
18 Rf6 draw
19 R4a5 loss in 2 half-moves
20 R6a5 loss in 2 half-moves
21 Ra7 loss in 2 half-moves
22 Rf4 loss in 2 half-moves
23 Rg4 loss in 2 half-moves
24 Rg6 loss in 2 half-moves
25 Rh4 loss in 2 half-moves
26 Rh6 loss in 2 half-moves