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

EGTB: win in 4 half-moves

# move score
1 Kb3 win in 3 half-moves
2 Kb4 win in 3 half-moves
3 Rb1 win in 3 half-moves
4 K1a2 draw
5 K1b2 draw
6 K3a2 draw
7 K3b2 draw
8 Ka4 draw
9 Kb1 draw
10 Ra6 draw
11 Rb2 draw
12 Rb7 draw
13 Rb8 draw
14 Rc6 draw
15 Rd6 draw
16 Rh6 draw
17 Rb3 loss in 2 half-moves
18 Rb4 loss in 2 half-moves
19 Rb5 loss in 2 half-moves
20 Re6 loss in 2 half-moves
21 Rf6 loss in 2 half-moves
22 Rg6 loss in 2 half-moves