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

EGTB: win in 6 half-moves

# move score
1 Rc8 win in 5 half-moves
2 K2a3 draw
3 K4a3 draw
4 Ka1 draw
5 Ka5 draw
6 Kb1 draw
7 Ra6 draw
8 Ra7 draw
9 Rb8 draw
10 Re8 draw
11 Rg8 draw
12 K2b3 loss in 2 half-moves
13 K4b3 loss in 2 half-moves
14 Kb2 loss in 2 half-moves
15 Kb4 loss in 2 half-moves
16 Kb5 loss in 2 half-moves
17 Ra5 loss in 2 half-moves
18 Rd8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves