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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Kaa2 draw
3 Kab2 draw
4 Kba2 draw
5 Kbb2 draw
6 Kc1 draw
7 Kc2 draw
8 Ra8 draw
9 Rb3 draw
10 Rb4 draw
11 Rh8 draw
12 Rb5 loss in 2 half-moves
13 Rb6 loss in 2 half-moves
14 Rb7 loss in 2 half-moves
15 Rc8 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves