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Xynariz's user avatar
Xynariz's user avatar
Xynariz
  • Member for 10 years, 7 months
  • Last seen more than a week ago
47 votes
4 answers
5k views

Which switch goes to which bulb?

43 votes
6 answers
26k views

What is the optimal first move in tic-tac-toe?

37 votes
4 answers
18k views

How many chess pieces does it take to "cover" all spaces on a chessboard?

32 votes
4 answers
22k views

Learning to Solve a River Crossing Puzzle

29 votes
2 answers
6k views

How many queens can be on a chessboard without attacking each other?

20 votes
4 answers
6k views

Alphametic (Verbal Arithmetic) general strategy

6 votes
1 answer
1k views

Odds of duplicate birthdays