Sudoku – 7 Other Complex Puzzles by Nikoli

Quiet pages open inside a clean puzzle book as a fresh grid waits for numbers to fall into place. Each puzzle type sits on its own board, from simple nine-square Sudoku layouts to winding logic paths, shaded regions, and tight numeric patterns. Every new page presents a different kind of challenge, asking for filling empty spaces using clues already printed on the board. Some puzzles spread across wide grids with plenty of room, while others stay small and tight, demanding sharp attention to every line and corner.

Placing numbers or marks happens through simple taps, filling each box with clear symbols. Sudoku puzzles rely on checking rows, columns, and blocks while slowly removing options until the correct number fits. Kakuro boards form small sums that must match perfectly. Shikaku divides the board into neat rectangles. Slitherlink connects dots into long loops, and Hashiwokakero builds bridges between islands. Each puzzle uses the same easy controls, but the thinking behind them changes completely, keeping the variety steady without adding complicated actions. Every correct placement offers small feedback that helps guide the next move.

Harder pages introduce larger grids, trickier clues, and puzzles that leave fewer hints at the start. Some require long chains of logic to unlock the first few placements, while others open quickly but tighten later with difficult choices. A few modes include optional timers for extra challenge, though all puzzles can be played slowly at a relaxed pace.