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

EGTB: win in 6 half-moves

# move score
1 Ra5 win in 5 half-moves
2 Ka6 draw
3 Kaa8 draw
4 Kab7 draw
5 Kb6 draw
6 Kba8 draw
7 Kbb7 draw
8 Kc7 draw
9 Kc8 draw
10 Rb5 draw
11 Rf3 draw
12 Rf4 draw
13 Rf6 draw
14 Rf7 draw
15 Rf8 draw
16 Rg5 draw
17 Rh5 draw
18 Rc5 loss in 2 half-moves
19 Rd5 loss in 2 half-moves
20 Re5 loss in 2 half-moves
21 Rf1 loss in 2 half-moves
22 Rf2 loss in 2 half-moves