Counting gate answered correctly faster than a human can scan the scene
bh.arena_count_superhuman · convicts
What it catches
Kitsune arena COUNTING gate (arena/count.go) — 'how many <colour> circles?', a prevalent wild captcha style, reproduced as owned infra. M coloured disks are rendered; the client counts the target colour and types the number (the true count is server-side). TELL (a REUSED family — solve-speed, not a new tell): a correct answer faster than a human can visually scan every shape to count the target (SERVER-OBSERVED age < totalShapes * countPerShapeMs, 220ms/shape). A human counts sequentially over the scene; a bot CV-counts (segment by colour, count blobs) instantly. anomaly:count_superhuman -> the detector relay (/arena/count/verify) joins it to ks_sid so a PASS is CONVICTED on coherence. This gate adds a prevalent STYLE, not a new tell family — its tell is the same solve-speed floor as the OCR/image-select gates, applied to a counting task. FP-SAFE BY CONSTRUCTION: the floor bounds human visual-scan time (hardware-independent), well under real human counting; a careful human counting over a couple of seconds passes silently. EXPERIMENTAL (w0.85). GROUNDED LIVE BOTH DIRECTIONS: a CV solver (segment the target colour, count blobs, answer instantly) convicts; a human submitting the correct count after a few seconds is silent.
Signals it reads
behavioral.arena_count_superhuman
How it fires
present
Bypassed by 10
Frontier evaders that reach the detector uncaught (scored only suspicious, defeating every convicting tell) — this check is not one that stops them. The red-team frontier this detection still has to convict.