Ref

Puzzles recently added by Ref

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Leuko SS online puzzleSee all puzzles added by Ref

Popular puzzles created by Ref

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Leuko SS online puzzleSee all the popular puzzles created by Ref

Puzzles recently solved by Ref

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Saint Basil's Cathedral in Moscow puzzle online from photoSnow-covered peaks of the Alps with the towering Grossglockner (Austria) online puzzleMountains over Engelberg (Switzerland) puzzle online from photoSee all the puzzles Ref has completed