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 Rd8 win in 3 half-moves
3 Kc6 win in 5 half-moves
4 Ka6 draw
5 Ka7 draw
6 Ka8 draw
7 Kb8 draw
8 Kc8 draw
9 Ra8 draw
10 Rb8 draw
11 Rf6 draw
12 Rg8 draw
13 Rh8 draw
14 Kb6 loss in 2 half-moves
15 Rc8 loss in 2 half-moves
16 Re8 loss in 2 half-moves
17 Rf1 loss in 2 half-moves
18 Rf2 loss in 2 half-moves
19 Rf3 loss in 2 half-moves
20 Rf4 loss in 2 half-moves
21 Rf5 loss in 2 half-moves
22 Rf7 loss in 2 half-moves