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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 Kb5 win in 3 half-moves
3 Kc7 win in 3 half-moves
4 Kc8 win in 3 half-moves
5 Rb7 win in 9 half-moves
6 Ra7 win in 15 half-moves
7 Ka3 draw
8 Ka5 draw
9 Kb3 draw
10 Ke7 draw
11 Ke8 draw
12 Rc7 draw
13 Rd1 draw
14 Rd5 draw
15 Rd6 draw
16 Rh7 draw
17 Rd2 loss in 2 half-moves
18 Rd3 loss in 2 half-moves
19 Rd4 loss in 2 half-moves
20 Re7 loss in 2 half-moves
21 Rf7 loss in 2 half-moves
22 Rg7 loss in 2 half-moves