Logic Masters Deutschland e.V.

This puzzle was made as a Secret Santa gift for the CtC Discord and published with the permission of my giftee alexc.

• Normal Sudoku rules apply.
• Christmas Light Bulb Rules:
  • For each yellow bulb, the digits on the green arrows connected to it must sum to the bulb's number.
  • Multiple arrows connected to the same bulb sum independently.
  • Digits may repeat on arrows.
• Balanced Branch Rules:
  • On brown branches, the sum of digits on the left side of the middle dot must equal the sum on the right side.
  • Each side includes:
  • Digits directly on the branch.
  • Digits in bulbs and their respective arrows attached to that side.
  • If an arrow leads to another balanced branch, the total sum of that branch counts toward its respective side.
• The star and faded tree outline are purely decorative.

Solve online