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

EGTB: win in 4 half-moves

# move score
1 Kba6 win in 3 half-moves
2 Rb7 draw
3 Rd7 draw
4 Re7 draw
5 Rf7 draw
6 Rg7 draw
7 Rh7 draw
8 Kba4 loss in 2 half-moves
9 Kc4 loss in 2 half-moves
10 Kc5 loss in 2 half-moves
11 Kc6 loss in 2 half-moves
12 Kaa4 loss in 1 half-moves
13 Kaa6 loss in 1 half-moves
14 Kab4 loss in 1 half-moves
15 Kab6 loss in 1 half-moves
16 Kbb4 loss in 1 half-moves
17 Kbb6 loss in 1 half-moves
18 Ra6 loss in 1 half-moves
19 Ra8 loss in 1 half-moves
20 Rc7 loss in 1 half-moves