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It definitely gets easier with a bit of practice.

PS: I solved it in 8 today, and my friend - who seems unnaturally good at this - solved it in 7. He always seems to beat me by 1; it’s like if the person who invented golf was best mates with Tiger Woods!

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Definitely gets easier! The first puzzle after the HN post took me 181 ( including figuring out how it works), which I think is the most anyone has taken on one puzzle lol. However today it only took me 22 moves! It's a very fun puzzle and it really just needs a bit of practice.

I definitely found it too difficult. I'd like to see a 3x3 or even a 1 dimensional version that I could use as a learning tool.

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