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Get it right the first time.
Project Phi makes it possible to know precisely how to prepare for your next big win. We provide no-holds-barred commentary on the competitive mathematics arena, along with extensive problem analysis.
No registration, no catches, no nonsense. Free, useful math resources for everyone.
Read more about the project here.


Articles and Features
Canned experience. You need to join a math contest at least once to get a sense on how to prepare for it – until now. In my new series Mathletes’ Greatest Secrets Finally Revealed, I’ll be uncovering the resources and good practices I've found useful in the different math competitions and training programs I've attended.


Behind-the-scenes solution dissection. Most compilations or solution keys produce a correct approach from thin air, without explanation. In my problem posts, I’ll illustrate how to carry out the hidden job of coming up with a winning strategy.


Definitive toolkits. Synthesizing useful theorems, formulae, and facts into an organic toolkit is a vital task that every math competitor does. In these posts on the Codex, I’ll lay out the essential tools of the trade.


Takeout, anyone?  If you prefer your math formal in cold hard paper, I've got you covered – many of the new posts have printable PDF versions.
Project Phi renders its math using the very versatile MathJax engine. In the unlikely event that your browser experiences issues, give the PDFs a try!