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 Kc2 draw
3 Kc3 draw
4 Kc4 draw
5 Kd2 draw
6 Kd4 draw
7 Ke2 draw
8 Ke3 draw
9 Ke4 draw
10 Rc8 draw
11 Rd8 draw
12 Re2 draw
13 Re3 draw
14 Re4 draw
15 Re5 draw
16 Re7 draw
17 Rf8 draw
18 Rh8 draw
19 Ra8 loss in 2 half-moves
20 Re1 loss in 2 half-moves
21 Re6 loss in 2 half-moves
22 Rg8 loss in 2 half-moves