Renju opening pattern

All debut classifications in Renju are based on patterns.

It is clear that due to symmetry any legal opening pattern will fall into one of the following categories: Due to symmetry there are 13 possibilities for the 3rd move as shown on a picture.

1st move is solid black circle, 2nd move is white circle, possible openings are shown enumerated.

Due to symmetry there are 13 possibilities for the 3rd move as shown on a picture.

1st move is solid black circle, 2nd move is white circle, possible openings are shown enumerated.