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 Kc2 draw
3 Kc3 draw
4 Kc4 draw
5 Kd2 draw
6 Kd4 draw
7 Ra4 draw
8 Rc4 draw
9 Rd4 draw
10 Re2 draw
11 Re3 draw
12 Re6 draw
13 Re7 draw
14 Re8 draw
15 Rf4 draw
16 Rh4 draw
17 Ke2 loss in 2 half-moves
18 Ke3 loss in 2 half-moves
19 Re1 loss in 2 half-moves
20 Re5 loss in 2 half-moves
21 Rg4 loss in 2 half-moves