HamiLoop vs Hiku Puzzle

HamiLoop: Draw one loop. Pass through every square on the grid exactly once. That's the whole idea behind HamiLoop, and it's harder than it sounds. What looks like a simple rule turns into a real puzzle once the grid grows, and figuring out the right path can take real thought. Grid sizes vary a lot, so difficulty varies with them. Some puzzles are solved in a couple of moments, others take much longer and require some careful planning. With 150,000 preloaded levels, you can pick a size and difficulty that suits your mood, and a new difficult puzzle is added every day if you're after something tougher. There are no timers and no countdowns anywhere in the app, so every puzzle can be worked through at your own pace. Each puzzle is presented with clean, colorful visuals, though the colors are purely decorative and don't affect the solving itself. If you like tackling more than one thing at a time, you can keep several levels open in parallel, so an easier puzzle is always there when you want a break from a harder one. Alongside the daily challenge, an extra hard puzzle is released once a week for players looking for something tougher still. The core idea of the game is inspired by Hamiltonian cycles, a well known concept from graph theory, giving the puzzle a solid mathematical foundation beneath its simple rule.

Hiku is a calm number puzzle for people who love sudoku: pure logic, no guessing. The number says how far it jumps. Land on another and they subtract. Make all the numbers disappear. • Daily Hiku: four new boards every day, from easy to expert – the same for everyone • Daily Hiku on Apple Watch too, with your stars and streak synced with your iPhone • 50 levels, all free, with three lessons that teach you the tricks • Easy, Medium, Hard and Expert • Every board can be solved – you just have to find the order • Three stars if you manage without undoing • Settings for a hint, a reminder, colors, and light or dark • No ads, no timers, no account. Works offline. How to jump A number jumps as many squares as it says, across or up and down. A 1 reaches its neighbour, a 3 reaches three squares away. It jumps over anything in between, but must land on another number. The smaller is taken from the larger, and the rest stays where it landed. Equal numbers both vanish. When a number gets smaller, its jump gets shorter. Every level can be solved. The wrong order can leave numbers that cannot reach each other. Undo freely and try another way. Clear a level without undoing to earn three stars. One or two undos earn two, more earn one. Starting over counts as one undo. About the name Hiku (引く) is Japanese for “to pull”. It is also the word for minus: 5 引く 2 は 3 means “five minus two is three”. The character 引 is made of 弓, a bow, and 丨, a line: a bowstring being drawn. It is the same arc you see when a number jumps.