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

EGTB: win in 4 half-moves

# move score
1 Rc6 win in 3 half-moves
2 Kc6 draw
3 Kf1 draw
4 Kf2 draw
5 Rc7 draw
6 Re8 draw
7 Rf8 draw
8 Rg8 draw
9 Rh8 draw
10 Kb4 loss in 2 half-moves
11 Kb5 loss in 2 half-moves
12 Kb6 loss in 2 half-moves
13 Kc4 loss in 2 half-moves
14 Kd1 loss in 2 half-moves
15 Kd2 loss in 2 half-moves
16 Kd4 loss in 2 half-moves
17 Kd5 loss in 2 half-moves
18 Kd6 loss in 2 half-moves
19 Ke2 loss in 2 half-moves
20 Ra8 loss in 2 half-moves
21 Rb8 loss in 2 half-moves
22 Rd8 loss in 2 half-moves