Bridge vs HamiLoop

The rules are simple. The game isn't. You're visiting towns full of rivers. The rivers form islands with bridges connecting them. To beat the game just cross every bridge once and only once. Each town challenges and entertains you with twists, turns, and a little man walking across bridges. The towns start simple and add more and more with houses to visit, colored bridges, tolls, and subways. Bridge - River Crossing IQ comes with 80 towns and more on the way. The towns start off easy, build slowly, and end with a few tough ones. Bridge - River Crossing IQ is a fun way to exercise your brain and perfect way to pass the time in boring meetings or the train ride home. Bridge - River Crossing IQ The city of Konigsberg in Prussia (now Kaliningrad, Russia) was built around two rivers with seven bridges. For years the residents tried to cross each bridge without crossing any of them more than once. Leonhard Euler proved that it was impossible to cross all the bridges without repeating and laid the foundation for graph theory and modern topology at the same time. This project is an iPad and iPhone game based on those famous bridges. Each level presents a puzzle with bridges to cross, houses to visit, and sometimes coins to collect. Have fun!

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.