Sudoku: Each digit, 1-6, appears exactly once in each row, column, and 2x3 region.
Killer: In cages, digits do not repeat and sum to the value of the expression in the upper-left corner. X and Y are integers. .
Solution code: Row 5, Left to Right
on 14. February 2026, 23:29 by VitP
the objective here is to reduce the 2x5 = 10 "obvious" cases to a much smaller number by considering ONE-variable equations.
on 14. February 2026, 17:45 by Zelfie
Really enjoyed this, thank you
on 13. February 2026, 18:21 by macintux
Terrific puzzle, thanks. Very approachable but still requires some thought.