This is the first puzzle in a short series of experimental puzzles. The first five puzzles in the series each explore one constraint in a 6x6 puzzle, and the sixth puzzle combines all constraints in a full-size sudoku.
Normal 6x6 sudoku rules apply: place the digits 1-6 in each row, column and 2x3 box. Dynamic fog: the grid is covered in fog. Correctly entering a digit will clear the fog in that cell and may clear the fog in other cells too. Anti-knight: Digits within a chess knight's move may not be the same.
Sudokupad link: https://sudokupad.app/vaziskd5og
Solution code: Row 6
today, 11:16 by JVA
This puzzle relies entirely on proving that the anti-knight restriction on a 6x6 forces a checkerboard pattern, which is too much to ask for a 1*
today, 00:38 by Jasperrr
Fun puzzle but having done my fair share of colouring puzzles, I definitely would not rate this 1*. It's also considerably harder than the other 5 puzzles in the series.