Category Archives: Matchsticks

Matchsticks – a diamond


Have a look at at this diamond – it is made up of 10 triangles.

Your challenges are:
1) 8 triangles**/*****
Move 4 matchsticks and have 8 triangles

2) 7 triangles**/*****
Move 4 matchsticks and have 7 triangles

3) 6 triangles**/*****
Move 4 matchsticks and have 6 triangles

4) 5 triangles**/*****
Move 4 matchsticks and have 5 triangles

You can check your solution here

New puzzles are published at least twice a month on Fridays.

Advertisements

100 doors challenge


Our daughter Margreet installed the “100 doors challenge” on her phone, and this weeks puzzles is based on one of the levels.

If 178 gives 237, what does 640 give?

You can check your solution here

New puzzles are published at least twice a month on Fridays.

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.

Matchsticks – hexagon


Last month we looked at some hexagon matchstick puzzles, and this month features some more.

1) Move 4 matches**/*****
From the figure above, move 4 matchsticks so that you have 4 triangles on unequal size.

2) Move 4 matches***/*****
From the figure above, move 4 matchsticks so that you have 6 triangles again.

You can check your solutions here and here.

New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. 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.

Matchsticks – hexagon


Matchsticks puzzles are over a century old, but seem to go through a revival with several apps featuring them.

1) Move 3 matches**/*****
From the figure above, move 3 matchsticks so that you have 4 same sized triangles.

2) Move 4 matches***/*****
From the figure above, move 4 matchsticks so that you have 4 same sized triangles.

You can check your solutions here and here.

New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. 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.

Matchsticks – the T


Have a look at the following figure:
matchsticks-t-2017-01-20-exercise


You can easily check that 16 matches form 5 squares.

Move 2 matches**/*****
Move 2 matches to create 4 squares

You can check your solution here

Move 3 matches**/*****
Move 3 matches to create 4 squares

You can check your solution here

Move 4 matches**/*****
Move 4 matches to create 4 squares

You can check your solution here

New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. 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.

Matchsticks – triangles (2)


3 triangles***/*****
Move 2 matchsticks to get 3 triangles:

matchsticks-triangles-2016-12-14-nr-2-exercise

You can check your solutions here.

New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. 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.

Matchstick – triangles


Surface***/*****
These 6 matches enclose an area with size 2 (2 standard triangles).
Rearrange them so that:
a) they enclose an area of exactly 4 triangles
b) they enclose an area of exactly 6 triangles

matchstick-triangles-2-2016-12-14-nr-1-exercise

You can check your solutions here.

New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. 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.

Matchsticks – a list of apps


Recently I downloaded a couple of matchstick puzzle apps on my android phone and on my ipad. Below you find an incomplete list of android apps with matchstick puzzles.

Here is a short list:

Name Publisher Type of puzzles Remarks
Matchstick puzzle Uysal Mehmet Digital Puzzles Minimalistic interface. It baffled me at first. I didn’t see hints or solutions, but that doesn’t mean they aren’t hidden somewhere.
Puzzles with matches Celtic Spear Digital matches, triangles and squares Well designed interface. Puzzles gradually increase in difficulty. Recommended!
Matchstick puzzles Gamophonica Squares At level 6, I found a symmetrical solution is not recognized. Interface is clear. Same on levels 7 & 8, and probably on subsequent levels too. I informed the publisher and they responded quickly to my email, so I trust this problem will be resolved when you read this (written dec 2016).
Matches Puzzle Game Bojan Klabjan Squares, triangles, numerical digits Original interface. Well designed. Recommended!
Matchstick Puzzle Alt-y Digital numbers Both moving and 1 and 2 matchsticks.
Amazing matchsticks Network Game&utility ? I skipped this one, as it asked 4 types of access which I deemed unnecessary
Matches Puzzle 2016 Fitapp Inc Digital numbers Both 1 and 2 matches to be moved. If you are stuck, solutions can be bought with in-game money.
Math puzzle with sticks LogiGames Digital numbers Beautiful interface, but I miss a clear indication of how many matches I have to move. Or maybe it is always just 1 match.

I admit I’m not even halfway through the list.

Anyway, here are two puzzles.
Problem 1*/*****
matchstick-digital-numbers-2016-12-29-nr-1-exercise

Problem 1***/*****
matchstick-digital-numbers-2016-12-29-nr-2-exercise

You can check your solutions here and here

New puzzles are published at least twice a month on Friday. Solutions are published after one or more weeks. 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.