Have a look at Rosetta Code > https://rosettacode.org/wiki/Rosetta_Code https://rosettacode.org/wiki/Rosetta_Code This might be a little bit nearer to what yo

Have a look at Rosetta Code > https://rosettacode.org/wiki/Rosetta_Code https://rosettacode.org/wiki/Rosetta_Code This might be a little bit nearer to what you look for. --- > it would be cool if there were a code puzzler site that is specifically geared towards little self-contained tasks In my opinion the tasks on Project Euler or LeetCode are much more self-contained than what you suggest as alternatives: many of your suggestions are deeply intertwined with libraries (and understanding them) for doing the respective task instead of being self-contained programming tasks.