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

EGTB: win in 4 half-moves

# move score
1 Rb7 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 Ra7 draw
11 Rc7 draw
12 Rd4 draw
13 Rd5 draw
14 Rd6 draw
15 Rd8 draw
16 Re7 draw
17 Rf7 draw
18 Rg7 draw
19 Rh7 loss in 2 half-moves