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 K3b3 draw
3 K3b4 draw
4 K4b3 draw
5 K4b4 draw
6 Ka2 draw
7 Ka5 draw
8 Kb2 draw
9 Kb5 draw
10 Ra8 draw
11 Rc8 draw
12 Rd8 draw
13 Re1 draw
14 Re5 draw
15 Re6 draw
16 Re7 draw
17 Re2 loss in 2 half-moves
18 Re3 loss in 2 half-moves
19 Re4 loss in 2 half-moves
20 Rf8 loss in 2 half-moves
21 Rg8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves