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

EGTB: win in 4 half-moves

# move score
1 Re1 win in 3 half-moves
2 Rg3 win in 7 half-moves
3 Rh3 win in 7 half-moves
4 Kb2 draw
5 Kb3 draw
6 Kc2 draw
7 Kc4 draw
8 Kd2 draw
9 Kd3 draw
10 Kd4 draw
11 Kg1 draw
12 Kg2 draw
13 Kh2 draw
14 Re2 draw
15 Re4 draw
16 Re5 draw
17 Rf3 draw
18 Kb4 loss in 2 half-moves
19 Rd3 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Re7 loss in 2 half-moves
22 Re8 loss in 2 half-moves