There are 26 opening patterns of renju. From this page you can find them all. For the most opening patterns you are also able to see the best and sometimes also some bad alternatives for the 5th move in the most usual variations.

Indirect Openings (the openings where the 2nd stone is located diagonally from the first stone):

• Indirect openings 1-3
• Indirect openings 4-6
• Indirect openings 7-9
• Indirect openings 10-13

Direct Openings (the openings where the 2nd stone is located vertically from the first stone):

• Direct openings 1-4
• Direct openings 5-7
• Direct openings 8-10
• Direct openings 11-13