Irodov or Krotov for high schoolers?

[Physicistpropeller]

How far you recommend krotov to high schoolers? like i genuinely want to improve my problem solving skills as i have given enough time in concepts and derivation stuffs...even of non routine courses but yeah need to sacrifice a few things for irodov! so?

 

[etotheipi]

Just throwing this in here; for high-school level problem solving, you really can't do much better than Jaan Kalda's problem sheets: https://www.ioc.ee/~kalda/ipho/