Fill each row, column, and same-colored block with numbers 1-9!
Fill in the empty cells so that each row, column, and same-colored block contains numbers 1 to 9 without repetition.
This puzzle is a perfect sudoku derived from length 4 perfect codes (1-error-correcting) over Zβ. The 9 Hamming balls correspond to 9 blocks, creating a unique color arrangement different from classic 3Γ3 blocks.