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 Kb4 draw
3 Kb5 draw
4 Kb6 draw
5 Kc6 draw
6 Kcc4 draw
7 Ra8 draw
8 Rc8 draw
9 Rh8 draw
10 Kc2 loss in 2 half-moves
11 Kc3 loss in 2 half-moves
12 Kcd4 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Kd5 loss in 2 half-moves
15 Kd6 loss in 2 half-moves
16 Kdc4 loss in 2 half-moves
17 Kdd4 loss in 2 half-moves
18 Ke2 loss in 2 half-moves
19 Ke3 loss in 2 half-moves
20 Ke4 loss in 2 half-moves
21 Rd4 loss in 2 half-moves
22 Rd5 loss in 2 half-moves
23 Rd6 loss in 2 half-moves
24 Rd7 loss in 2 half-moves
25 Re8 loss in 2 half-moves
26 Rf8 loss in 2 half-moves
27 Rg8 loss in 2 half-moves