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