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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Rb5 win in 1 half-moves
3 Rb6 win in 1 half-moves
4 Rb7 win in 1 half-moves
5 Kb1 draw
6 Kb2 draw
7 Kc1 draw
8 Kc3 draw
9 Kd1 draw
10 Kd2 draw
11 Kd3 draw
12 Ra3 draw
13 Rb2 draw
14 Rb8 draw
15 Rd3 draw
16 Re3 draw
17 Rf3 draw
18 Rg3 draw
19 Rb1 loss in 2 half-moves
20 Rc3 loss in 2 half-moves
21 Rh3 loss in 2 half-moves