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

EGTB: win in 4 half-moves

# move score
1 Rb4 win in 3 half-moves
2 Rb6 win in 3 half-moves
3 Rb7 win in 3 half-moves
4 K4a5 draw
5 K4b5 draw
6 K6a5 draw
7 K6b5 draw
8 Ka3 draw
9 Ka7 draw
10 Kb6 draw
11 Kb7 draw
12 Ra8 draw
13 Rb5 draw
14 Rh8 draw
15 Kb3 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Rb1 loss in 2 half-moves
18 Rb2 loss in 2 half-moves
19 Rb3 loss in 2 half-moves
20 Rc8 loss in 2 half-moves
21 Rd8 loss in 2 half-moves
22 Re8 loss in 2 half-moves
23 Rf8 loss in 2 half-moves
24 Rg8 loss in 2 half-moves