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

EGTB: win in 4 half-moves

# move score
1 Kb5 win in 3 half-moves
2 Kb4 win in 5 half-moves
3 Rfe1 win in 5 half-moves
4 Rf8 win in 7 half-moves
5 Ka3 draw
6 Ra2 draw
7 Ra3 draw
8 Rae1 draw
9 Rf2 draw
10 Rf3 draw
11 Kb3 loss in 2 half-moves
12 Rab1 loss in 2 half-moves
13 Rac1 loss in 2 half-moves
14 Rad1 loss in 2 half-moves
15 Rf4 loss in 2 half-moves
16 Rf5 loss in 2 half-moves
17 Rf6 loss in 2 half-moves
18 Rf7 loss in 2 half-moves
19 Rfb1 loss in 2 half-moves
20 Rfc1 loss in 2 half-moves
21 Rfd1 loss in 2 half-moves
22 Rg1 loss in 2 half-moves
23 Rh1 loss in 2 half-moves
24 Ka5 loss in 1 half-moves