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 Rb5 win in 3 half-moves
3 Rb6 win in 3 half-moves
4 Rd8 win in 7 half-moves
5 Ka1 draw
6 Ka2 draw
7 Ka4 draw
8 Ka6 draw
9 Kb2 draw
10 Kb4 draw
11 Kb5 draw
12 Kb6 draw
13 Ra8 draw
14 Rb3 draw
15 Rb7 draw
16 Rc8 draw
17 Rf8 draw
18 Rh8 draw
19 Kc1 loss in 2 half-moves
20 Kc2 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Re8 loss in 2 half-moves
23 Rg8 loss in 2 half-moves