Felt Sentinel — surveillance

detection of composition-based play · 8-deck punto banco · Macau

Where the windows are (§10.3, measured)

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Decile of shoeFire rate

Detector A — window-hit-rate test

Run against a real shoe in 2 Console.

Needs the pack read. Count the player's pair bets that sat on a player-positive pack and test against the base rate.

Power — what a given sample can see

BetsFlag atFalse pos. Perfect75%50%

Detector B — bet-log shape (no pack read)

Every window is late, so composition play is late. Share of a player's pair bets that fall in the last third of the shoe.

Watch a synthetic player get caught

Deal real seeded shoes, generate a player's pair-box log, run both detectors on it. Same shoes, only the player's policy changes.

pick a player, then deal.

Tell matrix (Appendix B, Lucky 6 direction corrected)

ThreatTypical HEFavourable state Floor tellCounter
Note: the brief's §9.3 EOR tags (6 negative, 7–9 positive) are right; its *prose* tells ("Lucky 6 after 6s have poured out") point the wrong way. Removing a 6 raises the house edge on Lucky 6 by 0.515pp — so the favourable state is 6s rich with 7/8/9 thin.

Detector C — the side-choice tell (known-card attack, §7.1)

The known-card edge this rests on is enumerated seat by seat in 2 Console → The call.

The largest edge in the brief is not on a side bet: it is one known card in the next six, worth 6.4–9.1% on the main bet. It has the cheapest detector here, because the peeker must act on what he knows and the act is a side choice. A bettor with a live read bets the side the first card favours; a bettor without one cannot beat the ceiling.

First card value0123 456789
Favoured main bet…

Power (α = 1%, exact binomial)

CoupsFlag at Perfect read3rd-card seat

Cover: what it costs him to hide

MisdirectedMatch rate Residual edgeSeen?
This is the detector to brief first: it needs only the scorecard and the bet log — no camera, no pack read, no Angel Eye scan — and it flags a first-carder who bets every coup in about 15 hands. To beat it he must bet the card-unfavoured side on 30.8% of his coups, which cuts his edge from +6.76% to +1.89%.