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 Ka2 draw
3 Ka5 draw
4 Ka7 draw
5 Kb1 draw
6 Kb2 draw
7 Kb5 draw
8 Kb6 draw
9 Kb7 draw
10 Ra8 draw
11 Rc8 draw
12 Rd8 draw
13 Re4 draw
14 Re5 draw
15 Re6 draw
16 Re7 draw
17 Rf8 draw
18 Re1 loss in 2 half-moves
19 Re2 loss in 2 half-moves
20 Re3 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves