Secondary games and puzzles for summer 2021

Each clue in this Sudoku is the product of the two numbers in adjacent cells.

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?

A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.

The clues for this Sudoku are the product of the numbers in adjacent squares.

Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?

Here is a machine with four coloured lights. Can you develop a strategy to work out the rules controlling each light?

Can you find the hidden factors which multiply together to produce each quadratic expression?

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?

The Number Jumbler can always work out your chosen symbol. Can you work out how?

Use the differences to find the solution to this Sudoku.

Here is a Sudoku with a difference! Use information about lowest common multiples to help you solve it.

Given the products of adjacent cells, can you complete this Sudoku?