Nikoli no Puzzle – Yajilin

A new logic challenge appears as the player opens a Yajilin puzzle, and the grid is filled with numbers, black squares, and empty spaces waiting to be solved. There is no story. Each puzzle shows clear rows and columns, with clues that indicate how to draw lines and avoid certain squares. The goal is simple. Draw a continuous loop on the grid while marking the correct black squares according to the numbers given.

The gameplay is very easy and beginner-friendly. The player taps or drags to draw lines along the grid and marks squares as black when needed. Some clues are simple and easy to follow, while others require careful thinking to avoid mistakes. The game highlights incorrect placements or broken loops, helping the player correct errors. Controls stay simple so beginners can focus on logical thinking and completing the puzzle without confusion. Each solved puzzle gives feedback, showing completion and confirming the loop is correct.

Larger grids and more complex puzzles appear as the player advances. Some puzzles include multiple connected clues that require planning several steps ahead. Certain grids hide tricky areas where black squares must be placed carefully to maintain a valid loop. Later puzzles combine multiple difficult clues, increasing the challenge and requiring more attention to detail.