Medusa Coloring

Medusa Coloring (3D Medusa) extends Simple Coloring to multiple digits by using strong links within bi-value cells. This builds larger color clusters with more elimination opportunities.

Technique

1. Start with conjugate pairs and color alternately as in Simple Coloring.
2. When reaching a bi-value cell, continue coloring to the other candidate.
3. Build clusters across multiple digits using this 3D approach.
4. Apply rules: same color twice in unit/cell = false; uncolored seeing both colors = eliminated.

Tips

• Medusa expands 2D coloring into a third dimension via bi-value cells.
• The same elimination rules apply but across multiple digits.
• Clusters can grow much larger than single-digit coloring.