Sufficient but Not Necessary: Two Eyes and Seki in Go
The game of go has a simple mechanism. This discussion of the principle of two eyes in go has shown that the game does not depend on equally clear-cut concepts.
The game of go has a simple mechanism. This discussion of the principle of two eyes in go has shown that the game does not depend on equally clear-cut concepts.
Try to stop your opponent from being able to split the piles of counters into unequal numbers. Can you find a strategy?
This second Sudoku article discusses "Corresponding Sudokus" which are pairs of Sudokus with terms that can be matched using a substitution rule.
A game for 2 or more players. Practise your addition and subtraction with the aid of a game board and some dried peas!
A game for 1 or 2 people. Use the interactive version, or play with friends. Try to round up as many counters as possible.
Can you spot the similarities between this game and other games you know? The aim is to choose 3 numbers that total 15.
Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?
Can you find different ways of showing the same number? Try this matching game and see!