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

EGTB: win in 2 half-moves

# move score
1 Rb4 win in 1 half-moves
2 Kb7 draw
3 Kcc7 draw
4 Kcd7 draw
5 Kdc7 draw
6 Kdd7 draw
7 Ke7 draw
8 Ke8 draw
9 Ra8 draw
10 Rb5 draw
11 Rb6 draw
12 Rb7 draw
13 Rb1 loss in 2 half-moves
14 Rb2 loss in 2 half-moves
15 Rb3 loss in 2 half-moves