Elimination Strategies
Learn some effective elimination techniques for Murdoku puzzles.
- 1
Single Remaining Cell
If a row or column must contain a suspect and every other cell has been eliminated, the remaining cell necessarily contains some suspect (undetermined).
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- 2
One-Dimensional Positions
If all valid positions for a suspect lie in a single row or column, all other suspects can be removed from that row or column.
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- 3
Square Intersection
When a suspect has only two possible positions and they form a square pattern, you can eliminate intersections.
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- 4
L Intersection
When a suspect's possible positions form an L-shape, the intersection of those rows and columns can be eliminated for other suspects.
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- 5
Cross Intersection
When a suspect's positions form a cross or T pattern across a row and column, the intersection point can be eliminated for other suspects.
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- 6
Locked Pair
If two suspects can only occupy the same two rows or columns, no other suspect can use those positions — eliminate every other suspect from those rows or columns.
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- 7
Full Area Occupancy
If an area must contain exactly N suspects and the area spans N rows or N columns, cells outside that area in those rows or columns can be eliminated. Examples: "Briana was only with Derek", "One of the rooms had two suspects" (sometimes logical deduction is required).
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