The Hardest 100: A New CrossEights Puzzle Series
Think you've mastered CrossEights? We're putting that to the test with a new occasional series: The Hardest 100.
We've assembled 100 of the most demanding puzzles in the CrossEights library for a special run of challenges. Each one has been chosen to make you look twice at the grid, trust your deductions, and stay with the solve.
A curated challenge
The series combines human curation with computer-aided analysis of the CrossEights library. The data helped us surface compelling candidates, while the final selection was reviewed and shaped by hand. We’re keeping the exact recipe under wraps — part of the fun is discovering what each grid has in store.
Together, the puzzles form a curated collection rather than a random run of games, with a new challenge waiting each time one is released.
Available exclusively through Facebook
The Hardest 100 will be released occasionally on the CrossEights Facebook page. The featured puzzle links will be shared there, and the series will not be part of the regular daily puzzle schedule.
Follow CrossEights on Facebook → to get the latest puzzle as each new challenge is released.
Can you solve all 100?
There is no deadline and no requirement to play them in order. Open a puzzle when it appears, take your time, and see how your score compares with your usual CrossEights games. If one defeats you, that may be exactly what makes it worth coming back to.
Follow the page, watch for the first release, and get ready for a harder kind of CrossEights solve.