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

EGTB: win in 4 half-moves

# move score
1 Rb5 win in 3 half-moves
2 Rb3 draw
3 Rb4 draw
4 Rb6 draw
5 Rb7 draw
6 Rb8 draw
7 Rd2 draw
8 Re2 draw
9 Rf2 draw
10 Rg2 draw
11 K6c7 loss in 2 half-moves
12 K6d7 loss in 2 half-moves
13 K6e7 loss in 2 half-moves
14 K8c7 loss in 2 half-moves
15 K8d7 loss in 2 half-moves
16 K8e7 loss in 2 half-moves
17 Kc5 loss in 2 half-moves
18 Kc6 loss in 2 half-moves
19 Kc8 loss in 2 half-moves
20 Kd5 loss in 2 half-moves
21 Ke5 loss in 2 half-moves
22 Ke6 loss in 2 half-moves
23 Ke8 loss in 2 half-moves
24 Ra2 loss in 2 half-moves
25 Rb1 loss in 2 half-moves
26 Rc2 loss in 2 half-moves
27 Rh2 loss in 2 half-moves