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

EGTB: win in 4 half-moves

# move score
1 Rb3 win in 3 half-moves
2 Kaa1 draw
3 Kaa3 draw
4 Kab1 draw
5 Kba1 draw
6 Kba3 draw
7 Kbb1 draw
8 Kc1 draw
9 Kc2 draw
10 Ra8 draw
11 Rb7 draw
12 Rf8 draw
13 Kab3 loss in 2 half-moves
14 Kbb3 loss in 2 half-moves
15 Kc3 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rc8 loss in 2 half-moves
20 Rd8 loss in 2 half-moves
21 Re8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves
23 Rh8 loss in 2 half-moves