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

EGTB: win in 4 half-moves

# move score
1 Kaa7 win in 3 half-moves
2 Kab7 win in 3 half-moves
3 Kbb7 win in 3 half-moves
4 Ra4 win in 3 half-moves
5 Kba7 draw
6 Rb1 draw
7 Rb2 draw
8 Rb3 draw
9 Rc4 draw
10 Rd4 draw
11 Rh4 draw
12 Kc7 loss in 2 half-moves
13 Kc8 loss in 2 half-moves
14 Rb5 loss in 2 half-moves
15 Rb6 loss in 2 half-moves
16 Rb7 loss in 2 half-moves
17 Re4 loss in 2 half-moves
18 Rf4 loss in 2 half-moves
19 Rg4 loss in 2 half-moves