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 Kd6 draw
3 Rb5 draw
4 Rb6 draw
5 Rb7 draw
6 Kb6 loss in 8 half-moves
7 Kc7 loss in 6 half-moves
8 Kd7 loss in 6 half-moves
9 Rc8 loss in 6 half-moves
10 Kb7 loss in 4 half-moves
11 Kb5 loss in 2 half-moves
12 Kc5 loss in 2 half-moves
13 Kd5 loss in 2 half-moves
14 Ra8 loss in 2 half-moves
15 Rb1 loss in 2 half-moves
16 Rd8 loss in 2 half-moves
17 Re8 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg8 loss in 2 half-moves
20 Rh8 loss in 2 half-moves
21 Rb2 loss in 1 half-moves
22 Rb3 loss in 1 half-moves