Noggle

Noggle is a deduction grid read on two tiers. At the bottom, a list of clues, each flanked by an X to cross out once used. In the middle, the crossing grid where you place marks: double tap to mark a match, single tap to mark a non-match, and tap again to undo. At the top, a table titled ANSWER HERE, where each row and each column must end up with exactly one check. The cells to fill are yellow, the rest of the grid is gray, and the single-line welcome instruction is: fill all the yellow cells to score your game. A star counter sits in the header, five at the start, and the hint button shows its price on its label, Hint (-1 ★). The first visit opens a tutorial that walks through a complete puzzle with you, Next button after Next button.

1. Read the clues listed beneath the board. Each has an X that lets you cross it out once you've taken what you needed from it.
2. Mark the crossing grid: a double tap places a match, a single tap places a non-match, and tapping the cell again removes the mark.
3. Record certainties in the ANSWER HERE table, knowing that each row and each column accepts only a single check.
4. Fill all the yellow cells, then press "Ready to Score?" to see what the game is worth. A Start Over button is offered alongside.

The deduction-grid genre is austere, and Noggle has the good idea of giving it a light stake: five stars at the start, a hint button that displays its price, and a game that is judged only when you decide it's finished. Because nothing is corrected along the way, the temptation to check doesn't exist: you advance on your own deductions, cross off the clues you've used, and see at the end whether the logic held. The separation between the working grid and the ANSWER HERE table helps a lot; it separates what you suppose from what you assert. And the tutorial, which walks a complete puzzle with you, defuses the genre's entry barrier in one play.

Noggle doesn't correct anything along the way. The How to Play panel describes only one moment of truth: when all the checks are placed in the ANSWER HERE table, you press "Ready to Score?" and discover your result. During a game, the only signposts are the star counter in the header and the Hint button, which advertises its one-star cost on its label even before you press it. The guided tutorial advances with a Next button.

Tutorial

Opened by default on first visit, it walks through an entire puzzle with the player, step by step, and is closed by an X.

Daily Puzzle

The header carries a "Today!" badge and the local save is dated by day, one grid per day.

• Each row and each column of the ANSWER HERE table receives only a single check: it's this constraint, more than re-reading the clues, that unfolds the grid.
• Clues are crossed out with a click on their X. On a crowded grid, that prevents re-reading ten times a clue you've already used.
• The hint's price is written on the button, Hint (-1 ★), before you touch it: it's up to each player to decide whether the current block is worth a star.