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 Ka4 draw
3 Ka7 draw
4 Kb7 draw
5 Ra8 draw
6 Rc8 draw
7 Rd1 draw
8 Rd2 draw
9 Rd6 draw
10 Rd7 draw
11 Rh8 draw
12 K5b5 loss in 2 half-moves
13 K5b6 loss in 2 half-moves
14 K6b5 loss in 2 half-moves
15 K6b6 loss in 2 half-moves
16 Kb4 loss in 2 half-moves
17 Rd3 loss in 2 half-moves
18 Rd4 loss in 2 half-moves
19 Rd5 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rg8 loss in 2 half-moves