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Excel Formula Challenges
Hard problems, solvable in a single cell. Modern Excel only — no VBA, no helpers.
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Matrix
Array & Sequence
Grid / Path
Grid / Path (Advanced)
String
Difficulty
All
★☆☆☆
★★☆☆
★★★☆
★★★★
Status
All
Solved
Unsolved
Rotate Matrix 90° Clockwise
Matrix
★☆☆☆
Circular Array Maximum Sum
Array & Sequence
★★☆☆
Count Paths with Obstacles
Grid / Path
★★☆☆
Count Paths with Target Sum
Grid / Path
★★☆☆
Grid Min Path Sum
Grid / Path
★★☆☆
Jump Game (Reachability)
Grid / Path (Advanced)
★★☆☆
Max Coins with One Turn
Grid / Path (Advanced)
★★☆☆
Triangle Max Path Sum
Grid / Path
★★☆☆
Grid Min Path Sum with Path Tracking
Grid / Path
★★★☆
Jump Game with All Hops
Grid / Path (Advanced)
★★★☆
Longest Palindromic Substring
String
★★★☆
Max Path with Threshold Constraint
Grid / Path (Advanced)
★★★☆
Next Permutation
Array & Sequence
★★★☆