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

EGTB: win in 4 half-moves

# move score
1 Ra8 win in 3 half-moves
2 Ka1 draw
3 Ka3 draw
4 Ka5 draw
5 Ka6 draw
6 Ka7 draw
7 Kb1 draw
8 Kb2 draw
9 Kb7 draw
10 Kc5 draw
11 Kc6 draw
12 Kc7 draw
13 Rb8 draw
14 Rc8 draw
15 Rd8 draw
16 Re8 draw
17 Rf4 draw
18 Rf5 draw
19 Rf6 draw
20 Rf7 draw
21 Kb3 loss in 2 half-moves
22 Kb5 loss in 2 half-moves
23 Rf1 loss in 2 half-moves
24 Rf2 loss in 2 half-moves
25 Rf3 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves