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 Rc8 win in 3 half-moves
3 Kb5 win in 5 half-moves
4 Ka5 draw
5 Ka7 draw
6 Kb1 draw
7 Kb2 draw
8 Kb3 draw
9 Kb6 draw
10 Kb7 draw
11 Kc1 draw
12 Kc3 draw
13 Ra8 draw
14 Rd4 draw
15 Rd5 draw
16 Rd6 draw
17 Rd7 draw
18 Re8 draw
19 Kd1 loss in 2 half-moves
20 Kd2 loss in 2 half-moves
21 Kd3 loss in 2 half-moves
22 Rd1 loss in 2 half-moves
23 Rd2 loss in 2 half-moves
24 Rd3 loss in 2 half-moves
25 Rf8 loss in 2 half-moves
26 Rg8 loss in 2 half-moves
27 Rh8 loss in 2 half-moves