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An asymmetric five-in-a-row game: the first player may not create double open threes, double fours, or overlines. Competitive openings such as Taraguchi-10 and Soosõrv-8 are available.
See BoardGameGeek: Renju.
Competitive 10-move Taraguchi opening (taraguchi-10).
Soosõrv-8 opening (soosyrv-8).
Yamaguchi opening (yamaguchi).
RIF opening (rif).
Swap-2 colour-choice opening (swap-2).
Swap-5 opening (swap-5).
If the game fills or double-passes, a recorded tiebreaker player wins instead of a draw (pass).
20250311 (2025-03-11). On Abstract Play since 2024-04-20.20240328; symmetry checks now use the centroid rather than the geometric centre.