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

EGTB: win in 4 half-moves

# move score
1 K1b1 win in 3 half-moves
2 K1b2 win in 3 half-moves
3 K2b1 win in 3 half-moves
4 K2b2 win in 3 half-moves
5 Kb3 win in 3 half-moves
6 Ra4 win in 3 half-moves
7 Rb4 win in 3 half-moves
8 Ka3 draw
9 Rc1 draw
10 Rc2 draw
11 Rc3 draw
12 Rc8 draw
13 Rd4 draw
14 Rh4 draw
15 Rc5 loss in 2 half-moves
16 Rc6 loss in 2 half-moves
17 Rc7 loss in 2 half-moves
18 Re4 loss in 2 half-moves
19 Rf4 loss in 2 half-moves
20 Rg4 loss in 2 half-moves