A game of tic-tac-toe is played on a grid of what size?
Answer3 by 3
Tic-tac-toe uses a 3 by 3 grid; players try to get three in a row.
Games · Facts & stats
Challenge Channel facts & stats
7 fact-checked facts about puzzles, games and competitions, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Crossword clues are usually grouped under which two headings?
AnswerAcross and Down
Crossword answers run either across (left to right) or down (top to bottom).
Going deeper
How many pieces make up a tangram puzzle?
Answer7
A tangram is a square cut into seven flat pieces: five triangles, a square and a parallelogram.
In tennis scoring, what does 'love' mean?
AnswerZero
In tennis, love means a score of zero.
In a 3 by 3 magic square using the numbers 1 to 9, each row, column and diagonal adds up to what?
Answer15
The numbers 1 to 9 total 45, and splitting that evenly across 3 rows gives 15 each.
Expert level
What is the minimum number of moves to solve the Tower of Hanoi puzzle with 3 discs?
Answer7
The minimum is 2 to the power of n minus 1; for 3 discs that is 7 moves.
Who published the first crossword puzzle, in a New York newspaper in 1913?
AnswerArthur Wynne
Arthur Wynne's 'Word-Cross' puzzle appeared in the New York World on 21 December 1913.
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