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