Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Re3 win in 3 half-moves
2 Re4 win in 3 half-moves
3 Ra8 win in 5 half-moves
4 Rb8 win in 5 half-moves
5 K1a2 draw
6 K1b2 draw
7 K3a2 draw
8 K3b2 draw
9 Ka4 draw
10 Kb1 draw
11 Kb3 draw
12 Kb4 draw
13 Rc8 draw
14 Rd8 draw
15 Re5 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