Kings, Knights, or Queens

Try it EITHER as King Sudoku (identical digits cannot be a chess king’s move apart) OR Queen Sudoku (9s cannot be a chess queen’s move apart) OR Knight Sudoku (identical digits cannot be a knight’s move apart)

NOTE: Because this puzzle has multiple solutions, the answer check function will not work.

try it here

Watch multiple solves of this puzzle from Mark Goodliffe here and here

R. Cameron Dennis, Ph.D.
R. Cameron Dennis, Ph.D.
Physicist | Quantitative Researcher | Data Scientist

Physicist specializing in quantitative modeling, machine learning, and complex systems. Passionate about bridging research with real-world applications.