Each row, column and 2x2 box contains the digits 1 to 4 once each.
Little Killer: in the direction of the marked arrows, the diagonals each sum to the same number to be discovered by the solver.
You can play Beginner Series, Little Killer Sudoku on f-puzzles or CtC.
Solution code: All digits in the first row from left to right
on 25. June 2024, 04:52 by macintux
Definitely not a speed run for me; even as a moderately experienced solver it took over 6 minutes for my break-in.
(Mainly I don’t want people to get discouraged by the other comment.)
on 20. January 2024, 01:33 by SimplePurpleFrog
Link to Anti Knight - Thermo
on 29. November 2023, 14:22 by PinkNickels
0:55, but still fun GAS speed run challenge