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

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ra8 draw
3 Rc8 draw
4 Rg3 draw
5 Rg4 draw
6 Rg5 draw
7 Rg6 draw
8 Rh8 draw
9 K5b5 loss in 2 half-moves
10 K5b6 loss in 2 half-moves
11 K5d5 loss in 2 half-moves
12 K5d6 loss in 2 half-moves
13 K6b5 loss in 2 half-moves
14 K6b6 loss in 2 half-moves
15 K6d5 loss in 2 half-moves
16 K6d6 loss in 2 half-moves
17 Kb4 loss in 2 half-moves
18 Kb7 loss in 2 half-moves
19 Kc4 loss in 2 half-moves
20 Kc7 loss in 2 half-moves
21 Kd4 loss in 2 half-moves
22 Kd7 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 Rg1 loss in 2 half-moves
27 Rg2 loss in 2 half-moves
28 Rg7 loss in 2 half-moves