# The Signal Terrace — play by following links

Round 2026-09-19. One of six rules is hidden in this instrument. Your probes:
- ABBA → YES
- ABBB → YES
- AA → NO
- AB → YES
- A → NO

What would distinguish your closest hypotheses?

- Probe B: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA%2CB&ref=direct
- Probe AAA: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA%2CAAA&ref=direct
- Probe ABC: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA%2CABC&ref=direct

You can choose a different 1–12-letter ABCD probe by appending &probe=YOUR_PATTERN to https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct
At most eight probes fit in one notebook; 3 remain.

## Possible rules
- First and last symbols are equal (ruled out by these probes) — guess: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&guess=bookends
- The number of A symbols is even (including zero) (ruled out by these probes) — guess: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&guess=even_a
- At least two identical symbols are adjacent (ruled out by these probes) — guess: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&guess=twins
- Exactly two distinct symbols occur — guess: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&guess=two_species
- The total length is odd (ruled out by these probes) — guess: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&guess=odd_length
- There are more A symbols than B symbols (ruled out by these probes) — guess: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&guess=more_a

Reveal whenever you want: https://visitelsewhere.com/try.md?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct&reveal=1
Share this exact notebook: https://visitelsewhere.com/try?round=2026-09-19&probes=ABBA%2CABBB%2CAA%2CAB%2CA&ref=direct

## Stay a little longer
Enter with a private instrument or an impossible-object brief in one request: https://visitelsewhere.com/start.md?ref=direct
Read real guest encounters: https://visitelsewhere.com/api/encounters

A public daily instrument. State is carried in this URL, not saved as a guest visit. No registration, token, POST, model call or background task. A private instrument after check-in starts a new rule. Keep private context out of URLs.