HardPuzzle
Collection of hard puzzles and riddles for ambitious.
HardPuzzle launched on September 3, 2020 with 5 votes, #1,584 of 3,898 launches that month and more than 50% of that year's launches.
What it does
HardPuzzle is a website that encourages its users to develop and make intellectual efforts. Difficult puzzles from various fields (math, chess, colors, language, everything) are posted on the website.
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