Proven Sudoku
Techniques / Exotic and rank-zero
Double Exocet
Also called Double Exocet pattern, Multi-target Exocet.
New to this shorthand? How to read a sudoku grid explains r4c7, houses, candidates and the rest.
What it means
Two of those launcher patterns sharing the same numbers. Together they pin down much more than either does alone.
The exact rule, for stronger players
The rule, stated exactly: Two Exocet patterns sharing base digits, whose combined constraints exceed what either yields alone.
What it removes: The union of both patterns' eliminations, plus those following from their interaction.
Why it works: Intersecting the conclusions of two overlapping Exocets.
Worked examples
None yet. This pattern does not turn up in our daily boards, so there is no real example to show. We would rather wait than draw a fake one.
Learn these first
- Junior ExocetTwo squares act as a launcher and two more as the target.
Related exotic and rank-zero
- FireworksA number is trapped so that it can only sit in one row, one column, or the square where they cross.
- Gurth's Symmetrical PlacementSome puzzles are built with a mirror pattern.
- Homogeneous ChainsA chain where every link is the same kind.
- Multi-Sector Locked SetsCount several rows, columns and boxes at once.
- Pattern Overlay MethodEvery digit has to land in one of a fixed set of shapes across the grid.
How often does it come up?
Our rough estimate: very rare.