Choose any game from our collection and tap to begin. Each game comes with its own set of rules, which you can read before starting. New games are added daily, so you can try the latest or revisit ...

Abstract: The climatic sensitivity of new terrain-aware backtracking algorithms is evaluated across 800 locations in the continental USA on a representative synthetic rolling terrain. We find that a ...

Sudoku fans, it’s time to really crunch some numbers. Give your mind the ultimate test on the most difficult numbers puzzle each day — and challenge yourself to make the impossible possible. Jump in ...

Abstract: Robot navigation in an unknown environment is a challenging task, due to the lack of spatial awareness and semantic understanding of the environment. Previous works predominantly relied on ...

Every weekday morning we release brand new Sudoku puzzles with easy, medium and hard versions. Enjoy solving today's puzzles and remember to come back for a new challenge! Check out our ...

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We give you the number of letters and a clue and you work out the word, easy! Or is it? Updated daily.