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

EGTB: win in 4 half-moves

# move score
1 Rf3 win in 3 half-moves
2 Kb1 draw
3 Kb2 draw
4 Kc1 draw
5 Kcd1 draw
6 Kcd2 draw
7 Ke2 draw
8 Ked1 draw
9 Ked2 draw
10 Kf1 draw
11 Kf2 draw
12 Ra3 draw
13 Re3 draw
14 Rg3 draw
15 Rh1 draw
16 Rh2 draw
17 Rh4 draw
18 Rh6 draw
19 Rh7 draw
20 Kb3 loss in 2 half-moves
21 Kc3 loss in 2 half-moves
22 Kd3 loss in 2 half-moves
23 Rb3 loss in 2 half-moves
24 Rc3 loss in 2 half-moves
25 Rd3 loss in 2 half-moves
26 Rh5 loss in 2 half-moves
27 Rh8 loss in 2 half-moves