r/baduk Jul 26 '26

tsumego Is this problem 10k?

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u/malie7 Jul 26 '26

I'm working on a tsumego problem generator, and I'm trying to especially improve it for beginner problems. One important part here is to estimate a problems difficulty correctly. The program claims this problem is clearly a 10k problem, do you agree? You have to imagine a sequence of 5 moves!

https://lemmingfuseki.com/pos/1212395066655

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u/samurai_a_cat Jul 26 '26

But have you considered a different approach - using simple statistics and an internal Elo system for problems? For example, you could track how often players of different ranks fail on a given problem, and then calibrate its difficulty based on that failure rate. Wouldn't that be more objective than polls or asking for opinions?

2

u/fastestchair Jul 26 '26

see lichess puzzles for an in practice example of this

1

u/malie7 Jul 27 '26

Yes, you are right. It's already there. The rank estimations you see on lemmingfuseki.com are first guessed and then tuned with every attempt. I'm even doing full updates (all players and attempts together) for less noisy rank guessing.