Challenge archive

Linguistic Challenges

Solve cases in this technique family.

CASE 001 Beginner

First Contact

A beginner acrostic challenge hidden in plain sight.

Acrostic 100 pts
CASE 011 Intermediate

Measured Steps

A five-letter signal is encoded in the odd/even lengths of ordinary words.

Word-Length Parity 200 pts
CASE 012 Advanced

Forked Vocabulary

A four-letter signal is hidden in a repeated codebook of curated word choices.

Synonym-Choice Steganography 300 pts
CASE 013 Advanced

Marks Between Clauses

A four-letter signal is hidden in the punctuation marks joining explanations to ordinary field notes.

Punctuation-Choice Steganography 325 pts
CASE 014 Advanced

Compressed Alibis

A four-letter signal is hidden in whether ordinary statements use full forms or contractions.

Contraction-Choice Steganography 350 pts
CASE 015 Advanced

Shifted Agency

A four-letter signal is hidden in whether repeated field events are written in active or passive voice.

Active/Passive Voice Steganography 375 pts
CASE 016 Advanced

Reordered Evidence

A four-letter signal is hidden in the order of paired facts that remain present in every observation block.

Sentence-Order Steganography 400 pts
CASE 017 Advanced

Counted Testimony

A four-letter signal is hidden in the odd/even alphabetic word counts of thirty-two field-note sentences.

Sentence-Length Parity 425 pts
CASE 018 Advanced

Variant Dispatch

A four-letter signal is hidden in a synchronized codebook of curated spelling variants.

Spelling-Variant Steganography 450 pts