Logic Masters Deutschland e.V.

Corgi inspired me to set a quattroquadri that included Anti-Queen. I thought the idea had legs, specifically the running legs of a tiny T-Rex, and paired this with a modular line. Feedback welcome. Good luck!

• Quattroquadri: Place the digits 1 to 9 in the grid such that digits do not repeat in any row, column, or 3x3 box
• Anti-Queen: Digits may not repeat a Queen's move away (in chess). I.e. no digit may appear more than once on any diagonal in this puzzle
• Modular Line: A run of three cells on a teal modular line must have different remainders when divided by 3, i.e. one digit from (1, 4, 7), one from (2, 5, 8), and one from (3, 6, 9)
• Kropki: A white dot separates digits which are consecutive. A black dot separates digits where one is double the other. No negative constraint

Play on Sudokupad (NB: Conflict checker should work for the diagonals in this puzzle. You can change the settings in Sudokupad to only highlight "Classic Sudoku" if you don't want this extra assistance.)

Download full solution guide (PDF)