Knotilus

How to play

1. 01

   Know the rule

   Each sequence is four numbers in increasing order, and from the third number on, each is the sum of the two before it.

2. 02

   Enter sequences

   Pick four numbers from the board. A sequence is entered as soon as you choose its fourth number.

3. 03

   Find the knot

   One number appears in all three solution sequences. The other nine numbers are each used only once.

4. 04

   Submit three

   Tap sequences to select them; your answer is submitted once three are selected. The timer stops when you pick the right three.

Good to know

• Only one answer. Between 4 and 10 valid sequences appear each day, but only one set of three follows every rule.
• Pick your challenge. The level sets how many numbers are on the board, and hard mode removes the visual cues. Shares show the level and a * for hard mode.
• Hints. Tap a lock icon in the top left to reveal one of the solution sequences.