Queens

Every day the board is partitioned into eight coloured regions of different shapes and sizes, seeded so the puzzle has exactly one valid solution. Your job: place one chess queen ♛ on each row, each column, and each region, with no two queens touching — not even diagonally (the chess king's-move rule).

Taps cycle through three states: blank → queen → × (ruled-out mark) → blank. The × is your deduction trail — cells you know can't hold a queen yet. Use them liberally; every placed queen blocks its row, column, region, and eight neighbours, and marking the blocked cells keeps you from re-solving from scratch.

Conflicts highlight in real time. When two queens attack each other — sharing a row, column, region, or touching diagonally — both cells pulse red. No hidden "Check" button, no penalty for trying — place freely and Queens tells you instantly. The board locks when all 8 queens are placed and nothing's red.

The puzzle is the same for every player worldwide — colours and region shapes translate into every language without any changes. Stats and the leaderboard are consolidated globally; the daily streak tracker counts solves across all languages equally. An unlimited mode layer rolls fresh puzzles from the same generated pool so you can practise without touching your daily streak.