Hi, I need to improve Physics Problem Solving Skills. Any book, paper, websites on this?

I'm looking for pre to IPhO level. Something like http://www.phys.ualberta.ca/olympiad/pdf/probsolv.pdf [Broken] I'm trying to find papers that would be me a edge on solving hard or tricky problems.

Plus is there any tips on Problem solving skills?

Thanks in advance.

I'm looking for pre to IPhO level. Something like http://www.phys.ualberta.ca/olympiad/pdf/probsolv.pdf [Broken] I'm trying to find papers that would be me a edge on solving hard or tricky problems.

Plus is there any tips on Problem solving skills?

Thanks in advance.

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