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

EGTB: win in 4 half-moves

# move score
1 Ka3 win in 3 half-moves
2 Rb4 draw
3 Ka1 loss in 2 half-moves
4 Kab1 loss in 2 half-moves
5 Kab2 loss in 2 half-moves
6 Kab3 loss in 2 half-moves
7 Kc1 loss in 2 half-moves
8 Kc3 loss in 2 half-moves
9 Kcb1 loss in 2 half-moves
10 Kcb2 loss in 2 half-moves
11 Kcb3 loss in 2 half-moves
12 Kd1 loss in 2 half-moves
13 Kd2 loss in 2 half-moves
14 Kd3 loss in 2 half-moves
15 Ra8 loss in 2 half-moves
16 Rb1 loss in 2 half-moves
17 Rb2 loss in 2 half-moves
18 Rb3 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Rb6 loss in 2 half-moves
21 Rb7 loss in 2 half-moves
22 Rc8 loss in 2 half-moves
23 Rd8 loss in 2 half-moves
24 Re8 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves