The first POC starts today. The file containing the puzzles and instructions is available here. Good luck.
Errata:
Puzzle 3 Word Walk: The example has 24 unique letters, not 25 as I had incorrectly mentioned on the file.
Puzzle 2, Word Blocks: The cell R10C2 had a different color than any of its neighbors. It belongs to the block on its right. PDF uploaded again.
Puzzle 3, Word walk: The phrase "with the exception that you are not allowed to start or end in an intersection point" is not required. There is no such restriction.
Puzzle 2: One of the contestants reported that R12C11 was colored differently , which I cannot see yet. Anyway, R12C11 and R12C12 are part of the same block, just in case anybody is unsure.
Points system: If two or more contestants submit solutions with the same score, the next contestant will incur a deficit. For example, if A and B score 1000 points on puzzle 1, and C scores less than 1000, C will get 13 points.
Puzzle 4: The wording is a bit confusing. Please make a note of a simpler version:
"Every box of dimensions mxn will contain either m or n chocolates. Square boxes are allowed. "