The Thinking Board

Propose a problem

Good problems for this board have more than one honest route to an answer. State it precisely, then let the room find the routes.

Easy to Difficult rank the proof, not the statement. Cryptic means the problem is posed as a riddle, with the question left for the solver to find.

LaTeX between $ … $ and $$ … $$.

An editor reads every submission before it goes on the board.