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

EGTB: win in 4 half-moves

# move score
1 Ra6 win in 3 half-moves
2 Kaa6 draw
3 Kaa8 draw
4 Kab6 draw
5 Kab8 draw
6 Kba6 draw
7 Kba8 draw
8 Kbb6 draw
9 Kbb8 draw
10 Kc6 draw
11 Kc7 draw
12 Kc8 draw
13 Ra4 draw
14 Ra5 draw
15 Rb3 draw
16 Rc3 draw
17 Rd3 draw
18 Rh3 draw
19 Ra1 loss in 2 half-moves
20 Ra2 loss in 2 half-moves
21 Re3 loss in 2 half-moves
22 Rf3 loss in 2 half-moves
23 Rg3 loss in 2 half-moves