Logic Masters Deutschland e.V.

The "Hidden Castle"

This is my debut puzzle – "Hidden Castle".

The very essence of this puzzle is drawn from a new SET.
As the puzzle's creator, I stumbled upon this SET and it ignited the spark to create this Sudoku.

The Rules of Engagement

Classic Sudoku rules: fill each row, column, and 3x3 box with numbers 1 to 9 without repetition.
Digits along an arrow must sum to the digit in that arrow's circle.
Digits on a thermometer increase from bulb to tip.
Digits separated by a black dot are in a ratio of 1:2

Enjoy this puzzling adventure!

Play it here:
SudokuPad Version