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A part of the cage sticks out. Now when you omit such a cage, the cells from that cage inside the house are called “innies”. When on the other hand you include that cage in your calculations, the cells sticking out of the house are called “outies”. As killer solvers, we are very interested in innies and outies, because they are the most important tools to solve the puzzle.", "local": "https://playground-portfolio-catalogue.finityads.com/images/9WZDNCRDLXL5/screenshot_03.png" }, { "url": "https://store-images.s-microsoft.com/image/apps.10318.9007199266438342.7f35710f-5c60-4775-b8f0-9d589ce3b073.b277d8ad-0711-4f31-85d3-0ac19e05e355", "purpose": "Screenshot", "width": 1462, "height": 989, "bg": "#FFFFFF", "caption": "Select the level you want to play. 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If you enjoy classic Sudoku but want a deeper challenge that rewards careful arithmetic thinking, this is the puzzle for you.", "steps": [ "Open the puzzle and study the outlined cages and their target sums", "Identify cages where only one number combination is possible and place those digits first", "Use the dedicated note keypad to jot candidate numbers in any cell", "Select multiple cells at once to enter shared notes quickly across a cage", "Eliminate candidates as rows, columns, and cages narrow down until every cell is solved" ], "controls": "Tap or click a cell to select it, then use the on-screen keypad to enter a definite digit or switch to note mode to record candidates. 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