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

EGTB: win in 2 half-moves

# move score
1 Rc4 win in 1 half-moves
2 Kb7 draw
3 Kb8 draw
4 Kc8 draw
5 Kd7 draw
6 Kd8 draw
7 Rc1 draw
8 Rd5 draw
9 Re5 draw
10 Rg5 draw
11 Kb6 loss in 2 half-moves
12 Kc6 loss in 2 half-moves
13 Kd6 loss in 2 half-moves
14 Ra5 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rc2 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc6 loss in 2 half-moves
19 Rf5 loss in 2 half-moves
20 Rh5 loss in 2 half-moves