numberfold.

Library

Puzzles

Each puzzle shows whether it is free, Full Game, or an expansion.

New

Cross

Place each bank number so every line is a true equation.

Target Path

Join neighbouring cells until they make the target.

Play

Ten

Paint cells that belong together.

Play

Balance

Swap until every line agrees.

Locked

Split

Tap the gaps between cells to split the board into the sizes shown.

Locked

Between

The missing number has a relationship with both sides.

Play

Loop

Tap the dashed lines between dots to draw one closed loop.

Locked

Sequence

What comes next follows a rule.

Play

Factors

Find every pair that multiplies to the target.

Locked

Inequalities

Fill empty cells so every < and > holds when the board is finished.

Locked

Killer Sum

Fill each coloured group so its digits add up to the corner number.

Locked

Cross

Place each bank number so every line is a true equation. A number on a cross has to work both ways. Bigger sheets have two or three steps.

Play

Climb

Each row and column has 1–n once. Along a crease, numbers only go up.

Play

Pairs

Choose two numbers that belong together.

Play

Chains

Follow the operations in order.

Locked

Expansion packs