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

EGTB: win in 4 half-moves

# move score
1 Rb1 win in 3 half-moves
2 K1a2 draw
3 K3a2 draw
4 Ka4 draw
5 Kb1 draw
6 Ra8 draw
7 Rb2 draw
8 Rb6 draw
9 Rb7 draw
10 Rg8 draw
11 K1b2 loss in 2 half-moves
12 K3b2 loss in 2 half-moves
13 Kb3 loss in 2 half-moves
14 Kb4 loss in 2 half-moves
15 Rb3 loss in 2 half-moves
16 Rb4 loss in 2 half-moves
17 Rb5 loss in 2 half-moves
18 Rc8 loss in 2 half-moves
19 Rd8 loss in 2 half-moves
20 Re8 loss in 2 half-moves
21 Rf8 loss in 2 half-moves
22 Rh8 loss in 2 half-moves