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 Re8 win in 1 half-moves
3 Rh8 win in 1 half-moves
4 Kb6 draw
5 Kb7 draw
6 Kc6 draw
7 Kc8 draw
8 Ra8 draw
9 Rb1 draw
10 Rb2 draw
11 Rb3 draw
12 Rb5 draw
13 Rb6 draw
14 Rb7 draw
15 Rc8 draw
16 Rf8 draw
17 Rg8 draw
18 Kd6 loss in 2 half-moves
19 Kd7 loss in 2 half-moves
20 Kd8 loss in 2 half-moves
21 Rd8 loss in 2 half-moves