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

EGTB: win in 2 half-moves

# move score
1 Rf4 win in 1 half-moves
2 Kc2 draw
3 Kc3 draw
4 Kc4 draw
5 Kd2 draw
6 Kd4 draw
7 Ke2 draw
8 Ke3 draw
9 Ra4 draw
10 Rb4 draw
11 Rd4 draw
12 Re1 draw
13 Re2 draw
14 Re3 draw
15 Re5 draw
16 Re6 draw
17 Re7 draw
18 Rg4 draw
19 Rh4 draw
20 Rc4 loss in 2 half-moves
21 Re8 loss in 2 half-moves