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 Ka2 draw
3 Ka4 draw
4 Kb2 draw
5 Kb3 draw
6 Kb4 draw
7 Kc1 draw
8 Kc2 draw
9 Kd2 draw
10 Ke1 draw
11 Rf6 draw
12 Ke2 loss in 2 half-moves
13 Rf2 loss in 2 half-moves
14 Rf3 loss in 2 half-moves
15 Rf4 loss in 2 half-moves
16 Rf5 loss in 2 half-moves
17 Rf7 loss in 2 half-moves
18 Rf8 loss in 2 half-moves
19 Rg1 loss in 2 half-moves
20 Rh1 loss in 2 half-moves