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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka1 draw
3 Ka3 draw
4 Ka6 draw
5 Ka7 draw
6 Ka8 draw
7 Kb1 draw
8 Kb2 draw
9 Kb6 draw
10 Kb8 draw
11 Kc6 draw
12 Kc7 draw
13 Kc8 draw
14 Ra8 draw
15 Rc8 draw
16 Rd4 draw
17 Rd5 draw
18 Rd6 draw
19 Rd7 draw
20 Re8 draw
21 Kb3 loss in 2 half-moves
22 Rd1 loss in 2 half-moves
23 Rd2 loss in 2 half-moves
24 Rd3 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves