Daily logic puzzles

What makes a good daily logic puzzle

• It’s the same for everyone. Then it’s something to talk about. You can compare how you did without giving anything away.
• It’s fair. Exactly one answer, and enough clues to reach it without guessing. When you get there, you know why.
• It’s short. A few minutes with a coffee, not an evening. One a day is a ritual, not a chore.
• It asks a little more than it seems to. The best ones look simple, then make you stop and think once.
• It gives you a reason to come back. A streak to keep, and a result to share.

A few well-known kinds

• Grid logic. The classic logic grid, sometimes called the zebra puzzle or Einstein’s puzzle: a list of clues such as “the baker lives next to the green house”, and a grid where you mark each pairing with a check or a cross until only one answer fits. Murdle uses a grid like this for its mysteries.
• Nonograms. Also called Picross or paint by numbers. The numbers beside each row and column tell you how many squares in a row are filled. Fill the right ones and a picture appears.
• Sudoku. Fill a nine-by-nine grid so that every row, column and box holds the numbers one to nine exactly once.
• Liar puzzles. Several people make statements, and some of them are lying. The classic version is knights and knaves, where knights always tell the truth and knaves always lie. You suppose someone is honest, follow where that leads, and see whether it breaks.

Lie of Sight is a liar puzzle, with a twist: the statements are about what each person saw, so you check them on a map of the room instead of in your head.

How Lie of Sight’s daily works

1. A new case at midnightYour time, wherever you are. Everyone gets the same case that day.
2. Read each storyDad, the Kid, Grandma and Rex the dog each say what they saw, or didn’t see. Rex goes by smell. Exactly one of them is lying.
3. Move the familyDrag them around the room. Each person sees by one rule, so where they stand decides which stories can be true.
4. Accuse the liarWhen everyone fits but one, that one is your liar. A wrong guess costs points, so be sure.

Missed a few days? This week’s cases are free to play or replay. Every older daily, back to Daily #1, comes with the one-time unlock.

The streak

Solve the daily case on its day to keep your streak going. A daily you don’t solve, or miss, ends it. Playing a past daily later is fun, but it doesn’t count.

When you’re done you get a picture of how it went, and a link to send. It shows how you did, never who lied, so it’s safe to post before your friends have played.

Questions people ask