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Ravens exampleLooking at the matrix to the left, what image completes the pattern? 

This is a matrix reasoning puzzle. These puzzles tap into basic facets of human intelligence: the ability reason abstractly—to see meaning in complexity, complete patterns, and solve novel problems.

Our project is crowdsourcing the design of a set of matrix reasoning puzzles. This is a competition, so winners will receive cash prizes and co-authorship of a scientific paper. >>

UPDATE: Prizes now increased to a total of $2000! See contest rules for full details.
UPDATE: The competition has ended and any further submissions won’t be eligable for the cash prizes. Further submissions may still qualify for the co-authorship if they are submitted before the evaluation of the puzzles is complete.