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 Ka7 draw
3 Kb8 draw
4 Ke3 draw
5 Ke4 draw
6 Ke5 draw
7 Kf5 draw
8 Kg4 draw
9 Kg5 draw
10 Ra4 draw
11 Rb3 draw
12 Rb5 draw
13 Rb6 draw
14 Rb7 draw
15 Rc4 draw
16 Rd4 draw
17 Re4 draw
18 Kb7 loss in 2 half-moves
19 Kf3 loss in 2 half-moves
20 Kg3 loss in 2 half-moves
21 Rb1 loss in 2 half-moves
22 Rb2 loss in 2 half-moves