What is Cross Eights?
Cross Eights is a small number grid where every row and every column must sum to exactly 8. Allowed values are a short integer list. Each cell sits in two sums, so one greedy 5 can break a column you had already solved.
It is constraint arithmetic, not a crossword and not a 2048 slide.
Cross Eights Game Rules
Place permitted numbers so each row totals 8 and each column totals 8. Going over 8 invalidates that line. Shared cells couple the two directions. Puzzles vary in size and in which integers are legal. Undo when a line overshoots.
- Every Cross Eights row and column sums to 8.
- Only the puzzle’s allowed integers may be placed.
- Each cell belongs to one row and one column.
- Overfilling a line is illegal and must be repaired.
How to play Cross Eights?
Press Play on this listing to open official Cross Eights. Fill near-complete lines first, then use the leftover as the only legal number that still makes 8.
- Note the grid size and which numbers Cross Eights allows.
- Complete a row or column that has little slack.
- Check the crossing line still can sum to 8.
- Repair any overflow before you fill more cells.
Cross Eights Strategy & Tips
Work the tightest sums first. If a row already shows 6, only 2 remains. Track both axes after every placement. Large allowed digits are dangerous early. If stuck, undo the last shared cell rather than forcing a 3 into a full column.
- Solve Cross Eights lines with the least remaining slack first.
- Always recheck the crossing sum.
- Undo a shared cell instead of breaking a finished 8.
FAQ about Cross Eights
What is Cross Eights?
Cross Eights is a logic-number puzzle where every row and column must add to exactly 8.
How do you play Cross Eights?
Open official Cross Eights, place allowed integers, and keep both the row and column of each cell summing to 8.
Can a line sum to more than 8?
No. Over 8 is invalid; you have to change placements.
Where can I play Cross Eights?
Use Play on this AllDle Games page to open official Cross Eights in a new tab.