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 K5b5 draw
3 K5b6 draw
4 K6b5 draw
5 K6b6 draw
6 Ka4 draw
7 Ka7 draw
8 Kb7 draw
9 Ra8 draw
10 Rc8 draw
11 Rd8 draw
12 Rh3 draw
13 Rh4 draw
14 Rh5 draw
15 Rh6 draw
16 Rh7 draw
17 Kb4 loss in 2 half-moves
18 Re8 loss in 2 half-moves
19 Rf8 loss in 2 half-moves
20 Rg8 loss in 2 half-moves
21 Rh1 loss in 2 half-moves
22 Rh2 loss in 2 half-moves