Logic Masters Deutschland e.V.

This puzzle was originally set in November 2022 for the Cracking the Cryptic Discord's monthly prompt of "Classroom."

• Normal sudoku rules apply.
• Digits may not appear in the same relative position in any box.
• In box 1, digits along a thermometer must increase from bulb to tip.
• In box 2, digits separated by a black dot must have a ratio of 1:2. Not all dots are given.
• In box 3, digits along a green line must differ by at least 5 from their neighbors on the line.
• Clues outside the grid give the total of the digits sandwiched between the 1 and 9 in the row.
• In box 4, digits in cages must sum to the total in the top left corner.
• Box 5 is a magic square, where every row, column, and diagonal of the 3x3 must sum to the same number.
• In box 6, the digit in the fortress cell must be greater than all digits adjacent to it.
• In box 7, digits along the arrow sum to the total in the circle.
• In box 8, squares must contain even digits and circles must contain odd digits.
• In box 9, digits separated by a V must sum to 5, and digits separated by an X must sum to 10. Not all Xs and Vs are given.

Solve in CTC or f-puzzles