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

EGTB: win in 4 half-moves

# move score
1 Rb2 win in 3 half-moves
2 Rb3 draw
3 Rb7 draw
4 Rb8 draw
5 Re4 draw
6 Rg4 draw
7 Rh4 draw
8 Kaa2 loss in 2 half-moves
9 Kab2 loss in 2 half-moves
10 Kba2 loss in 2 half-moves
11 Kbb2 loss in 2 half-moves
12 Kc1 loss in 2 half-moves
13 Kc2 loss in 2 half-moves
14 Ra4 loss in 2 half-moves
15 Rb5 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rc4 loss in 2 half-moves
18 Rd4 loss in 2 half-moves
19 Rf4 loss in 2 half-moves