LoopCraft
Some puzzles are beautiful because their rules are simple. LoopCraft on igrasu.ru is our take on the classic Slitherlink: a grid of numbers and a single closed loop.
The rules in two sentences
Draw a continuous loop that never crosses or branches. Around every numbered cell the loop must pass exactly as many times as the number says. Cells without a number are free.
Why it hooks you
At first the numbers seem to say little. But close one corner and a chain of logic pulls the next moves along: here the line must pass to satisfy a neighbor, there it definitely cannot. And at some point the loop closes by itself.
Where to start
Begin with small boards — the whole logic of the puzzle is visible there. The 'Hint' button highlights a correct move if you are stuck, and the 'How to play' tab explains the controls in Russian and English.