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 Rb8 win in 3 half-moves
3 Rb6 win in 7 half-moves
4 Rb7 win in 7 half-moves
5 K5b6 draw
6 K5c6 draw
7 K5d6 draw
8 K7b6 draw
9 K7c6 draw
10 K7d6 draw
11 Kb4 draw
12 Kb5 draw
13 Kb7 draw
14 Kb8 draw
15 Kc8 draw
16 Kd5 draw
17 Kd7 draw
18 Kd8 draw
19 Ra3 draw
20 Rb5 draw
21 Rf3 draw
22 Kc4 loss in 2 half-moves
23 Kd4 loss in 2 half-moves
24 Rb1 loss in 2 half-moves
25 Rb2 loss in 2 half-moves
26 Rc3 loss in 2 half-moves
27 Rd3 loss in 2 half-moves
28 Re3 loss in 2 half-moves
29 Rg3 loss in 2 half-moves
30 Rh3 loss in 2 half-moves