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

EGTB: win in 2 half-moves

# move score
1 Rb3 win in 1 half-moves
2 Ka1 draw
3 Ka2 draw
4 Ka6 draw
5 Ka8 draw
6 Kb2 draw
7 Kb6 draw
8 Kb8 draw
9 Kc1 draw
10 Kc2 draw
11 Rb8 draw
12 Rc7 draw
13 Rd7 draw
14 Re7 draw
15 Rb2 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 Rf7 loss in 2 half-moves
20 Rg7 loss in 2 half-moves
21 Rh7 loss in 2 half-moves