1 out of 3
1 out of 3
Some puzzles requiring no knowledge of knot theory, just a careful inspection of the patterns. A glimpse of the classification of knots and a little about prime knots, crossing numbers and knot arithmetic.
2 out of 3
A game for 2 players with similarities to NIM. Place one counter on each spot on the games board. Players take it is turns to remove 1 or 2 adjacent counters. The winner picks up the last counter.
2 out of 3
Got It game for an adult and child. How can you play so that you know you will always win?
1 out of 3
Can you end up with all the occurrences of the same letter in this two-player game?
To celebrate NRICH's 25th birthday, why not play this special version of our classic game, Got It? Can you devise a strategy so that you will always win?
2 out of 3
3 out of 3
Stop the Clock game for an adult and child. How can you make sure you always win this game?
3 out of 3
A game for 2 players. Set out 16 counters in rows of 1,3,5 and 7. Players take turns to remove any number of counters from a row. The player left with the last counter looses.
