Sudra

Breathe
A quiet 9×9 number-place puzzle under a slow, drifting northern light. Every row, every line down and every 3×3 square must hold the numbers one to nine exactly once. Each grid is generated with a single solution, and its difficulty is judged by the logic it needs, from simple singles in Easy to pointing pairs, hidden pairs and naked triples in Expert.
Look
The Journey holds 32 puzzles in four chapters of eight: First Light, Drift, Veil and Polar Night, rising from Easy through Medium and Hard to Expert. Solve one to open the one after it. A star for solving, one more for a clean solve with no mistakes or hints, and a third for beating the par time, with 96 stars across the four chapters.
Place
Tap a cell, then a number on the keypad, which shows how many of each are left. Notes mode pencils in candidates and clears them by itself when a number lands, clashes and matching numbers are highlighted, and undo and erase are always close by. Three hints per attempt mark one cell and explain why only that number fits, while three mistakes end the attempt.
Rest
The Daily puzzle is built from the date, with a month calendar, a streak counter and the last 20 solves listed with time, mistakes and hints. A Technique Guide explains the rules and eight solving methods with small diagrams. The Numbers & Puzzles quiz asks ten questions from 24 real facts, with a note after each answer. Fourteen badges, records of average times and clean solves, haptics and a motion switch complete the set. It all stays offline, with no sound, no ads and no account.