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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 Kb5 win in 3 half-moves
4 Kc7 win in 3 half-moves
5 Ka3 win in 7 half-moves
6 Ka5 win in 9 half-moves
7 Rb8 win in 15 half-moves
8 Ra8 win in 19 half-moves
9 Ke8 win in 23 half-moves
10 Kd7 win in 33 half-moves
11 Rc5 win in 33 half-moves
12 Rc7 win in 33 half-moves
13 Ke7 draw
14 Rc4 draw
15 Rc6 draw
16 Rc1 loss in 2 half-moves
17 Rc2 loss in 2 half-moves
18 Rc3 loss in 2 half-moves