How to play
A sequence of numbers follows a hidden rule. Figure out the pattern and predict the next number in the chain.
Type your answer and hit Go. After each wrong guess, you'll see whether the answer is higher or lower.
You can also reveal hints, but each hint costs one guess toward your score.
You have 5 attempts total, including any hints. Score is based on how few you need: 5 points for getting it first try, down to 1 for using all five.
Difficulty increases through the week: Sunday and Monday are warmups. Friday will make you think.