My new portfolio has a small daily arcade: Minesweeper, a 6×6 Sudoku, Quick Math and Code Review (spot the bug in three short snippets). Everyone gets the same puzzles each day, and I play them first, so my real time is the one to beat. A few things I enjoyed building: Times you can't fake. The puzzles are public, so the server doesn't trust the browser. You get a signed token when you start; when you finish, the server replays your moves with the same game logic and measures the time itse...