The Hamiltonian Circuit
A challenging puzzle game
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Description

Find a path that visits every square in the grid, avoiding walls and never crossing itself, to create one continuous circuit.

To get the hang of things, start with one of the simple 4x4 grids. Plot your moves carefully. Try to think ahead; not just by one square, but by four or five. If you think you've made a mistake, trace back over your line. It will disappear.

If you really get stuck, press Hints. Any mistakes will turn red, then disappear. But if you're on the right path, we'll add a line.

There's only one solution for every puzzle. When you find it, you'll know.

Puzzles start with 4x4 grids and go all the way to 20x20. The bigger puzzles are very challenging and can take hours to solve. If you have to quit in the middle of one, don't worry: your progress is automatically saved.

Many find working on these circuits meditative; others reach for the ibuprofen. But no matter which camp you find yourself in, know you're exercising your abstract thinking skills and challenging your brain in ways that actually matter.

Inspired by a puzzle created by Irish mathematician William Rowan Hamilton in 1856, these circuits start off easy and get hard. Really hard. Good luck!

Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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In-Apps

Annual
$8.99
Sharp 1
$2.99
Bright 1
$2.99
Bright Mini 1
$0.99
Pack of 50 Hints
$0.99
Pack of 250 Hints
$3.99
Basic Puzzle Pack 1
$2.99
Einstein mini-bundle 1
$2.99
Unlock all puzzle packs
$30.99

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User Rating

3.77 out of 5

31 ratings in United States

5 star
16
4 star
3
3 star
5
2 star
3
1 star
4

Ratings History

Reviews

Addicting game

humanoftheyear on

Just downloaded this today and am already addicted!

Good game, but…

barcodez on

A good, challenging puzzle game. But there’s no reason for it to run as hot or burn through my battery like it does. So what’s it doing in the background?

Nice game, price too high

BobTheUser on

It took me very little time to go through a set of problems I was charged for. Doesn’t make sense, and not in line with the cost of other games.

Great game but the scoring is confusing

NolanWritesAReview on

I love this game! Unfortunately I don’t understand how it’s scored. At the end of each level a percentage is given based on the number of grid spaces in the puzzle, however it’s unclear what the scoring criteria are. Still worth every penny since it’s satisfying enough to solve the puzzles. A very challenging game and nicely designed!

Okay puzzle, few free levels

8886637228 on

See the title.

Amazing Game (with bugs)

Avid "Sweller" on

The game is a great idea (how could you go wrong with an NP-complete problem), and the puzzles are designed well too :). However, it seems in the newest update, many of the levels that I'd already finished are now marked incomplete. So, the packs I was in the middle of are now especially difficult to navigate. Moreover, while the pencil mode is super helpful, in hex puzzles it does not connect with the normal drawing mode, leaving a pretty significant discontinuity. Thanks for the help!

$18 for the full game?

The Feet of a Statue on

In my opinion, the price is steep for such a minimal game. Additionally, you cannot play the “giant” levels on iphone devices, you HAVE to have an ipad? Why can’t the dev just let us zoom in?

Nearly Impossible levels require guessing?

curt_l on

Love the game, I’m playing thru a second time. But I feel like some of the Nearly Impossible levels can’t be solved without guessing. Is that true? I feel like I’ve learned all of the tricks to solve.

Broken

InternetClown on

Says 94% after completely finishing the first level

Dump the timer

Lazy and stupid on

The puzzles are enjoyable , but the timer and the insulting scores it generates ruin the fun. So I took a couple minutes, can't I just enjoy it? Finished the free puzzles then deleted it.

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App Info

Category
Games
Languages
English
Recent version
3.3.2 (3 months ago )
Released on
Jan 22, 2021 (3 years ago )
Last updated
1 month ago