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

EGTB: win in 2 half-moves

# move score
1 Rb8 win in 1 half-moves
2 Rf3 win in 1 half-moves
3 Rb4 win in 3 half-moves
4 Rb5 win in 3 half-moves
5 Rb6 win in 3 half-moves
6 Rb7 win in 3 half-moves
7 K4a5 draw
8 K4b5 draw
9 K6a5 draw
10 K6b5 draw
11 Ka3 draw
12 Ka7 draw
13 Kb4 draw
14 Kb6 draw
15 Kb7 draw
16 Ra3 draw
17 Rc3 draw
18 Rd3 draw
19 Re3 draw
20 Rb1 loss in 2 half-moves
21 Rb2 loss in 2 half-moves
22 Rg3 loss in 2 half-moves
23 Rh3 loss in 2 half-moves