this was a tough one (but all PACMAT problems are great fun!)
Determine if a Given Number is a Triangle Number
Back to basics 4 - Search Path
Return the Fibonacci Sequence
Compress strings (not springs)
BattleShip - Petty Officer (Level 2)
LASER Tracker - Mirror Distance and Angle
Criss-Cross Verification: NHL
Primes Faster for Large N
Magic - Faro Shuffle
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