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

EGTB: win in 4 half-moves

# move score
1 Kb4 win in 3 half-moves
2 K3a2 draw
3 Rd4 draw
4 Re4 draw
5 Rf4 draw
6 Kb1 loss in 2 half-moves
7 Kb3 loss in 2 half-moves
8 Ra5 loss in 2 half-moves
9 Ra6 loss in 2 half-moves
10 Ra7 loss in 2 half-moves
11 Ra8 loss in 2 half-moves
12 Rb4 loss in 2 half-moves
13 Rc4 loss in 2 half-moves
14 Rg4 loss in 2 half-moves
15 Rh4 loss in 2 half-moves
16 K1a2 loss in 1 half-moves
17 K1b2 loss in 1 half-moves
18 K3b2 loss in 1 half-moves