How to play
Each day brings three small puzzles. The two grids are solvable by pure logic and each has exactly one solution, so you never need to guess. The Word Ladder always has a route of at most seven steps. Puzzles get harder through the week: Monday and Tuesday are easy, Wednesday and Thursday medium, and Friday to Sunday hard.
Binary (6×6)
Fill every cell with a sun or a moon. Tap or click a cell to cycle sun → moon → empty. With a mouse, right-click places a moon straight away (right-click a moon again to clear it). On a keyboard: 0/S for sun, 1/M for moon, arrows to move, Backspace/Delete to clear.
- Each row and each column has three suns and three moons.
- No more than two of the same symbol may sit next to each other in a row or column.
- No two rows are identical, and no two columns are identical.
A valid row:
Not allowed (three suns in a row):
Tips
- Pairs: two suns side by side must be flanked by moons.
- Gaps: a gap between two suns (sun, empty, sun) must be a moon.
- Counting: once a row has three suns, the rest are moons.
Mini Sudoku (6×6)
Place the digits 1 to 6 so that every row, every column and every 2×3 box contains each digit exactly once. Select a cell, then tap a number or type it.
The top two rows of a solved grid (one band of boxes):
Tips
- Singles: look for a cell where only one digit fits.
- Hidden singles: look for a digit that fits in only one place within a row, column or box.
Word Ladder
Turn the start word into the target word one step at a time. Type with the on-screen keyboard (or your own keyboard) and press Enter to add each word.
- Each step changes exactly one letter; the letters stay in place.
- Every step must be a real English word (no names or abbreviations) from our family-friendly dictionary.
- You can’t reuse a word that’s already on your ladder.
Par is the shortest route using everyday words — find a cleverer path with less common words to beat it. Any real English word counts as a step, as long as it’s family-friendly. Early in the week ladders use four-letter words with a short par; later in the week they get longer, and some weekend ladders use five-letter words.
Example, par 3:
Tips
- Look at which letters of the target you already have, and protect them.
- Vowels are flexible: swapping a vowel often opens new words.
- Check tells you the shortest number of steps left from your current word (using any accepted word), and whether you can still make or beat par. Undo takes back your last word, and Hint adds the next word on a shortest route from wherever you are.
Check, hints and streaks
- If your grid breaks a rule, a note under the grid says which one, for example “Rows 1 and 4 are identical” or “Row 5 has two 3s.” Notes only describe what’s on the board. They never compare it with the answer, and no squares are highlighted, so they won’t give the puzzle away. Identical rows or columns are only reported once both lines are full.
- Check tells you whether any rules are broken and how many cells are left. It doesn’t tell you whether your cells match the answer.
- Hint fixes a mistake if you have one, otherwise reveals a cell. Hinted cells show yellow in your shared result.
- Reset clears the board (the timer keeps running).
- Your streak grows by one each day you solve at least one of that day’s puzzles. Progress is saved in your browser only.
- Copy result gives you a spoiler-free grid to share: ⬛ given, 🟩 solved by you, 🟨 hinted. For Word Ladder, each row is one step and shows which letter position changed.