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 Kb6 win in 3 half-moves
3 Kcd4 win in 3 half-moves
4 Kcd6 win in 3 half-moves
5 Rb8 win in 3 half-moves
6 Re8 win in 3 half-moves
7 Ke6 win in 7 half-moves
8 Kb5 draw
9 Kcc4 draw
10 Kcc6 draw
11 Kdc4 draw
12 Kdc6 draw
13 Kdd4 draw
14 Kdd6 draw
15 Ke4 draw
16 Ke5 draw
17 Ra8 draw
18 Rc7 draw
19 Rd8 draw
20 Rf8 draw
21 Rc6 loss in 2 half-moves
22 Rg8 loss in 2 half-moves
23 Rh8 loss in 2 half-moves