Hanabi

I recently bought a new card game, called Hanabi, and I strongly recommend it. At the time of writing this, you can get it for \$10.42 on amazon. The thing that sets this aside from most card games is that it is completely cooperative. The thing that sets it aside from most cooperative games is that there is hidden information, so it is not just a single player game in disguise.

The basic idea is that 2 to 5 players each have a hand of 4 to 5 cards that they hold backwards. Each player can see all cards in other players hands, but not the cards in their own hands. Players take turns playing cards, discarding cards, or giving hints about other players’ cards. If you attempt to play an invalid card, you get a strike. In the end everyone’s score is the total number of valid cards played.

The game plays well for 2 to 5 players, but is rather difficult for 2 players. My wife and I got a perfect game on one of the  easier difficulty levels, but have not yet done so on the hardest difficulty level. I am convinced that a sufficiently well designed convention can win almost always. So far the game has been a hit with everyone I have introduced it to, and a couple people decided to buy it after playing their first game.

Enjoy!

Logic Puzzle: 5, 5, 7, 7 = 181

If you have not already solved the puzzle “One, Two, Three,” you should solve that one first. It is a warm-up for this one.

Using the numbers 5 and 7, each twice, and the combining them using addition, subtraction, multiplication, division, exponentiation, square root, factorial, unary negation, and/or parenthesis, but no base 10 shenanigans like digit concatenation, come up with an expression which evaluates to 181.

The solution will eventually be posted in the comments, but if you solve it before then, feel free to show off.

Logic Puzzle: One, Two, Three

Using the three digits, 1, 2, and 3, each at most once, and the combining them using addition, subtraction, multiplication, division, exponentiation, square root, factorial, unary negation, digit concatenation, decimal point, vinculum, and parenthesis, construct all the positive integers from 1 to 30. (Digit concatenation and decimal points only allowed on the original 3 digits. You do not need a 0 before the decimal point.)

The solution will eventually be posted in the comments, but if you solve it before then, feel free to show off (even with partial progress).