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

EGTB: win in 4 half-moves

# move score
1 Kc7 win in 3 half-moves
2 Kc8 win in 3 half-moves
3 Rc8 win in 3 half-moves
4 Kd7 draw
5 Kde7 draw
6 Kde8 draw
7 Kf7 draw
8 Kfe7 draw
9 Kfe8 draw
10 Kg7 draw
11 Kg8 draw
12 Ra8 draw
13 Rb2 draw
14 Rb6 draw
15 Rb7 draw
16 Rb1 loss in 2 half-moves
17 Rb3 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves