about 11 years ago - Comments Off
I’m currently working on a forthcoming book (The Mammoth Book of Brain Workouts, published next year in the UK by Constable & Robinson, and in the US by Running Press), and have been experimenting with something I wrote about briefly a few years ago but hadn’t really tried since – variants on Numberlink.
Numberlink puzzles have More >
about 15 years ago - Comments Off
Diagonal Number Link 8×5 puzzle 2Diagonal Number Link 8×5 puzzle 1
Here’s two more, slightly larger, diagonal number link puzzles – these are 8×5. The problem with diagonal number link is that it’s very hard to constrain the puzzles to a unique solution without making them really quite easy, since lines essentially can’t run parallel for More >
about 15 years ago - 3 comments
Toroidal Number link 8×8 puzzle
Number Link at sizes up to around 10×10 may not necessarily be hugely challenging for everyone, but I bet you now that this puzzle certainly will be! Despite being only 8×8 it is really very difficult indeed. Or perhaps that’s just me – I’d love to hear that someone finds it More >
about 15 years ago - 3 comments
Numberlink 10×10 puzzle 2 (fixed)Numberlink 10×10 puzzle 1
When I first tried a Number link puzzle a few years back I didn’t like it at all – it wasn’t immediately clear how to go about solving it, and I didn’t see how I’d ever find it fun. However jump forward to now and I find them More >
about 15 years ago - 2 comments
Numberlink 10×10 puzzle Numberlink example solution
I’ve had a couple of emails and comments suggesting that it would have been easier if I’d included an example with yesterday’s Number Link puzzle, so I’ve made up for that today with both another puzzle (10×10 this time, and not too taxing I hope) and a small 6×6 example More >
about 15 years ago - 2 comments
Numberlink 20×9 easy puzzle
Over the past few years I’ve made at least one example of pretty much every reasonably popular Japanese number puzzle, but with one notable exception: Number Link. In this puzzle the aim is to draw lines connecting squares with identical values in, but without these lines crossing over or visiting any square More >
about 15 years ago
Would it be possible to post the solution to the so called easy one?! Maybe I am missing the point here, but I am getting muddled up with my straight and diagonal lines, That is to say when I am doing a straight line it goes through the middle of a cell, and when doing a diagonal one from corner to corner. So the confusion arises when I start off with a straight line (e.g. from the 2 in the bottom left hand corner and then need to move diagonally, Does the diagonal line start from the middle of the cell. I don’t know whether I’m being particularly thick on this one, but a visual solution would help to see where lines cross. Thanks! I do appreciate the new types of puzzles to try!
about 15 years ago
All lines move from one cell to a touching one, including diagonally touching cells, with only one line per cell. That’s the only constraint.
In other words, you can draw the lines wherever you like within the cells, so long as only one line is in any single cell. (So to be specific, they don’t have to go corner to corner; if you were drawing a solution it would probably go from the centre of one cell to the centre of another, just for neatness).
Here’s the solution to the first puzzle:
1334
3143
1423
2232
If you draw between all the cell mid-points with the same numbers you’ll get neat lines.
Hope this helps!