Logic Masters Deutschland e.V.

This is dedicated to a special person! Enjoy!

• Normal Sudoku rules apply.
• Quadruples: Digits in the white circles must appear at least once in the four surrounding cells.
• Numbered Rooms: Clues outside the grid give the digit to be placed in the Nth cell in that row or column, where N is the digit in the first cell.
• Palindromes: Digits along a gray palindrome line read the same forwards and backwards. For clarity, the light grey palindrome stars and ends in r3c7 and r7c3.