How to play
Each day has five price charts on one theme, 20 seconds each. Part of each line is hidden: draw it with a finger, a mouse or the arrow keys, then reveal the real line before the time runs out.
A chart scores up to 100: 60 for where your line ends, 40 for the path on the way. One chart a day hides a stretch in the middle instead; your line has to meet the real one on both sides, and it scores on the path alone.
Once 50 players have finished a chart, the dashed line shows the crowd's average guess.
One puzzle a day, the same for everyone, new at midnight Eastern. Past days stay in the archive for practice.