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 K4b3 draw
3 Rc8 draw
4 Rd8 draw
5 Re8 draw
6 Rg8 draw
7 Ka1 loss in 2 half-moves
8 Ka2 loss in 2 half-moves
9 Ka4 loss in 2 half-moves
10 Ka5 loss in 2 half-moves
11 Kb1 loss in 2 half-moves
12 Kb5 loss in 2 half-moves
13 Kc1 loss in 2 half-moves
14 Kc2 loss in 2 half-moves
15 Kc4 loss in 2 half-moves
16 Kc5 loss in 2 half-moves
17 Ra8 loss in 2 half-moves
18 Rb6 loss in 2 half-moves
19 Rb7 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rh8 loss in 2 half-moves
22 K2a3 loss in 1 half-moves
23 K2b3 loss in 1 half-moves
24 K2c3 loss in 1 half-moves
25 K4a3 loss in 1 half-moves
26 K4c3 loss in 1 half-moves