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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Kaa2 draw
3 Kaa4 draw
4 Kab2 draw
5 Kab4 draw
6 Kba2 draw
7 Kba4 draw
8 Kbb2 draw
9 Kbb4 draw
10 Ra8 draw
11 Rc8 draw
12 Rd8 draw
13 Rh8 draw
14 Kc2 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Kc4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves