Sealed Hands Cup

An original hidden-hand knockout cup. Rock beats scissors, scissors beats paper and paper beats rock. Equal hands repeat; two decisive wins advance.

One human plays a disclosed random or adaptive bot that seals first. Local2/4/8 uses private pass-the-device handoff. Online has exact2/4/8 signed-in humans, two-person duels and independently checked salted commitments. Eliminated entrants remain in the room through the final.

Landscape recommended; portrait supported. Native responsive bracket, original synthesis, English/Portuguese help and rematch. Casual host-managed results are unverified. Departure, invalid reveal, eight draws, missed deadline or backgrounding ends safely. No stakes, entry fees or prizes. Shared-device privacy requires people to look away; browser code cannot offer absolute secrecy.

• Initial 1/2/3 or number pad chooses rock/paper/scissors; A/D or Left/Right cycles choices
• Initial Space/Enter/Numpad Enter seals the selected hand separately; F remains an alias; choosing never seals
• Mouse/touch: separate accessible private hand and Seal buttons outside the bracket
• Local2/4/8: pass the covered device, press Ready, choose privately and seal
• Solo: one human; disclosed random or adaptive bot seals first
• Escape closes Help first; Escape/P pauses/resumes solo/local, M mutes, F1 opens Help; online Help stays live
• Repeat, native focus, IME, modifiers and canceled contacts cannot seal; lifecycle changes clear choice