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 Rb1 draw
3 Rb2 draw
4 Rb3 draw
5 Rb5 draw
6 Re8 draw
7 Rg8 draw
8 Rh8 draw
9 Ka4 loss in 2 half-moves
10 Ka6 loss in 2 half-moves
11 Kab4 loss in 2 half-moves
12 Kab5 loss in 2 half-moves
13 Kab6 loss in 2 half-moves
14 Kc4 loss in 2 half-moves
15 Kc6 loss in 2 half-moves
16 Kcb4 loss in 2 half-moves
17 Kcb5 loss in 2 half-moves
18 Kcb6 loss in 2 half-moves
19 Kd4 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Kd6 loss in 2 half-moves
22 Ra8 loss in 2 half-moves
23 Rb6 loss in 2 half-moves
24 Rb7 loss in 2 half-moves
25 Rc8 loss in 2 half-moves
26 Rd8 loss in 2 half-moves
27 Rf8 loss in 2 half-moves