Play Negators Sudoku Online Free

Play Negators Sudoku online for free. Killer cages with 9 negator cells whose digits SUBTRACT from cage sums. The inverse of Killer Doublers.

▶ Play Negators Sudoku — Free
🟢 Easy 🟡 Medium 🟠 Hard 🔴 Expert

How to Play Negators Sudoku

  1. Standard Sudoku rules: rows, columns, and 3×3 boxes contain 1-9.
  2. Dotted cages show a target sum.
  3. 9 cells are marked with small white minus signs — these are 'negators'.
  4. Negator cells contribute the NEGATIVE of their digit value to their cage sum.
  5. Exactly one negator appears in every row, column, and 3×3 box (Latin permutation).
💡 Pro Tip
Cage sums can be impossibly low or even negative. A cage of size 3 with sum 2 might contain {9, 5, neg-2 contributing -2} = 9+5-2 = 12... or {3, 1, neg-2} = 3+1-2 = 2. Test possibilities by considering which negator value makes the math work.

Frequently Asked Questions

Can cage sums be negative in Negators Sudoku?

Yes! A cage holding small positive values and a large negator can have a negative total. This is one of the most distinctive features of Negators.

How is Negators different from Doublers?

Doublers ADD 2× their value; Negators SUBTRACT 1× their value. Both use the same Latin permutation rule for marker placement.

Try More Puzzle Modes

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▶ Play Negators Sudoku