Monthly Archives: January 2018

Truth-speakers, Switchers and Liars at the table in the restaurant

In the restaurant***/*****
The remote island of Zwrazr in the Logico archipelago is inhabited by three types of people: Truth-speakers, Liars, and Switchers. Truth-speakers always speak the truth, Liars always lie, and Switchers alternate their sentences between a true sentence and a lie.

In a restaurant, a group of natives are sitting at a circular table.
They take turns to say: the person to my left is a Switcher.
After that, they take turns, starting with the same person, to say: the person to my left is a Liar

What can you say about their type? How many are Truth-speakers? How many are Switchers? How many of them are Liars?

You can check your solution here

New puzzles are published at least twice a month on Friday. You are welcome to remark on the difficulty level of the puzzles, discuss alternate solutions, and so on. Puzzles are rated on a scale of 1 to 5 stars.

Knights tours

Today we have “special forces”, such as the SAS in the UK, the Russian Spetsnaz, and the USA Rangers and Seals. In the middle ages these special forces had a name that still rings today: knights. The link between them and today’s puzzle is very thin: the knight got a place in western chess, and today’s puzzle uses the move of the knight on the chessboard.

In the series on new magazine format puzzles, I published a post on a new word format puzzle I encountered in the free newspaper metro in my native Netherlands.

In it, you have a 3×3 grid, the center of which is empty, while the outer edge is filled with letters. The letters form a word, and consecutive letters are always a knights jump (knight in chess) apart. Example:

For those who don’t know how a knight in chess moves: move one horizontally or vertically, followed by a diagonal move away from the starting square.

A knight on the square marked “K” may move to any square marked “X”.

My main criticism is that the puzzles as published by Metro are too easy to solve.

Today it occurred to me that the size of the board can be increased, and the size altered, to increase the difficulty of the puzzles.

9 letters**/*****

12 letters***/*****

20 letters****/*****

That increased size raises the difficulty level of the puzzle is easy to understand: a larger size does not only give more starting positions, but also more possible moves on subsequent moves.
Another way to increase the difficulty is by not using single letters – the human mind in the western world is used to work with them – but digrams (two letter combinations) or trigrams (three letter combinations).

Proverb split into digrams***/*****

Proverb split into trigrams***/*****

A new puzzle is published at least twice a month. I welcome your comments below, but please do not spoil the fun for next visitors by listing your solutions. Solutions are published one or more weeks later. You can find more puzzles with words by following the link to the right.

You can check your solutions here

Happy new year!

What do you read when you superposition these three figures?

You can check your solution here

New puzzles are published twice a month on Fridays. Solutions are revealed one or more weeks later.

This puzzle was inspired by the “100 doors” app, and by the Dutch translation of 1000 casse-tete et enigmas by Piere Berloquin.