The sections headings of Chapter 1 on Heuristics give a flavor of its approach: Search for a pattern; Draw a figure; Formulate an equivalent problem; Modify the problem; Choose effective notation; Exploit symmetry; Divide into cases; Work backward; Argue by contradiction; Pursue parity; Consider extreme cases; Generalize.
Links:
* Official Springer book web site: https://www.springer.com/gp/book/9780387961712
* Amazon: https://www.amazon.com/Problem-Solving-Through-Problems-Prob...
* Poor quality scanned PDF: https://math.la.asu.edu/~ifulman/spring13/mat194/problem-sol...
I narrowly missed a place on the Australian IMO team, and at the time was annoyed at myself for being beaten by a 10 year old. He, of course, was Terry Tao, youngest ever winner of a IMO medal, and a Fields Medalist a few years later.
- "General Methods for Solving Physics Problems", Belikov.
Polya's "How to Solve It" and Paul Zeitz's "Art and Craft of Problem Solving" are both great. Are there other resources on this topic that are worth reading?