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 Ka6 draw
3 Kb5 draw
4 Kb6 draw
5 Kc8 draw
6 Ke7 draw
7 Ke8 draw
8 Re8 draw
9 Rf4 draw
10 Rf5 draw
11 Rf6 draw
12 Rf7 draw
13 Rg8 draw
14 Rh8 draw
15 Ka4 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Kd7 loss in 2 half-moves
18 Rf1 loss in 2 half-moves
19 Rf2 loss in 2 half-moves
20 Rf3 loss in 2 half-moves