Zip, Tango, Sudoku: A Beginner's Guide to the Daily Logic Puzzles
Word games test what you know. Logic grids test how you think - and the three that took over lunch breaks this year share one beautiful property: every puzzle can be solved by pure deduction. If you are guessing, you have missed something. Here is how each one works, and the habit that cracks all three.
Zip: one line through every cell
Zip gives you a grid with numbered dots. Draw a single continuous path that visits every cell, hitting the numbers in order - 1 to 2 to 3, no cell visited twice, no diagonal moves.
The beginner’s mistake is starting at 1 and improvising. The better habit: look at the corners and edges first. A corner cell has only two neighbors, so the path through it is often forced before you draw anything. Chain those forced segments together and long stretches of the answer appear on their own. When two numbers sit close together with lots of empty grid elsewhere, the path between them must wander - your line has to soak up every leftover cell.
Tango: suns and moons, never three in a row
Tango is a balance puzzle: fill the grid so each row and column has equal suns and moons, with no three of the same symbol adjacent. Equals and opposite signs between some cells pin pairs together.
Two deductions do most of the work. First, the sandwich: any S _ S pattern forces a moon in the middle, because S S S is illegal. Second, the count: a six-wide row that already shows three suns fills its remaining cells with moons instantly. Scan for sandwiches, then recount rows - repeat until done.
Sudoku: the classic, played honestly
Sudoku needs no introduction: every row, column and box contains each digit once. The honest way in is scanning - pick a digit that appears often, and check which cells in each box can still hold it. When a box has one legal cell left for a digit, that placement is proven, not guessed. When scanning stalls, switch to naked pairs: two cells in a unit that can only hold the same two digits lock those digits out of every neighbor. Our boards run from a gentle 4x4 up to full 9x9 with notes and hints built in (unlimited boards here).
The habit that unifies them
In all three games, the winning move is the one you can prove. The moment you feel the urge to try something, stop and hunt for the cell where only one option survives - it always exists. This is the same muscle, trained three ways, and it transfers: our Untangle, Skyscrapers, Flip and Galaxies boards are all built on the same guarantee of a guess-free solution.
Dailies, streaks and challenge links
Each puzzle publishes one shared board a day - Zip, Tango and Sudoku dailies sit alongside the Daily Challenge and the rest of the daily lineup, each with its own calendar streak. Solve one you are proud of, and the share button copies a challenge link to that exact board - the friend who opens it plays the same puzzle, timed. It is the quickest way to settle who the real logician in the group chat is.