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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 K6a7 draw
3 K6b7 draw
4 K8a7 draw
5 K8b7 draw
6 Ka5 draw
7 Kb5 draw
8 Kb6 draw
9 Kb8 draw
10 Ra1 draw
11 Rb2 draw
12 Rb3 draw
13 Rb4 draw
14 Rb6 draw
15 Rc1 draw
16 Rd1 draw
17 Rf1 draw
18 Rg1 draw
19 Rb7 loss in 2 half-moves
20 Rb8 loss in 2 half-moves
21 Re1 loss in 2 half-moves
22 Rh1 loss in 2 half-moves