Game Rules and Layout Constraints
King Hub Witness uses a 4×4 board (cells 1–16) with a fixed number of hazards. The hidden layout is sampled uniformly from the published constraint support and remains fixed for the entire round; it is never redrawn.
The Constraint: At least one hazard in the eight-neighbour king graph is adjacent to every other hazard. Other hazards need not be adjacent to each other.
Support Counts: The number of valid layouts (support count) depends on the hazard count selected:
- 3 Hazards: 132 layouts
- 4 Hazards: 233 layouts
- 5 Hazards: 272 layouts
Scoring and Gross Payout
The gross payout is calculated from the exact posterior probability over consistent layouts. Each selected safe cell is priced from this posterior.
- Initial Quote: Gross value starts at 0.97 times the stake.
- Dynamic Pricing: The value becomes the current value divided by that cell’s safe probability.
- Known-Safe Cells: Leave value unchanged.
- Proven Hazards: Are disabled and cannot be selected.
The live gross quote is calculated as: 0.97 × (Original Support Count / Surviving Support Count). A hazard returns zero.
Settlement and Collection Rules
Collection: You may collect after at least one safe pick. Collection is automatic only when no eligible uncertain move remains.
Blocking:A click whose next gross multiplier exceeds 1,000 is rejected before reveal. The round stays active and unchanged; the cap does not disable the cell button.
Return: Every revealed-information strategy has a 97% expected gross return in the fair support model. This is not a win probability.
Virtual Wallet and Balance
Initial Balance: 1000 virtual coins.
Restoration: If the idle balance falls below 10, you can manually restore it. This action sets the balance to exactly 1000, preserving any fractional carry.
Fractional Carry: Persists through settlement, manual refill, and reload.
Reload: An unfinished round ends without refund or resume if the page is reloaded.
Controls and Modes
Stake Options: 10, 20, 50, or 100 virtual coins.
Locked Controls: Stake, mode, and refill are locked while active. Sound remains available.
Unfinished Reload: Does not receive a refund or resume capability.
Privacy and Storage
Storage: Game source uses localStorage for settled balance and fractional carry. This does not establish anonymity or exclude other processing.
Third-Party Requests: The template declares a Google Fonts stylesheet; actual full-site network capture remains pending.
Account Flow: None. No login or payment flow is observed in the demo.
Frequently asked questions
How is the hazard layout determined?
One complete 4×4 hazard layout is sampled uniformly from the published constraint support of the selected count and stays fixed. It is never redrawn during the round.
What is the 'eight-neighbour king graph' constraint?
At least one hazard in the eight-neighbour king graph is adjacent to every other hazard. Other hazards need not be adjacent to each other.
How is the gross payout calculated?
The gross value starts at 0.97 times the stake. It becomes the current value divided by that cell's safe probability. The live gross quote is 0.97 times the original support count divided by the surviving support count.
When can I collect my winnings?
You may collect after at least one safe pick. Settlement is automatic only when no eligible uncertain move remains.
What happens if a prospective quote is above 1,000×?
A click whose next gross multiplier exceeds 1,000 is rejected before reveal. The round stays active and unchanged; the cap does not disable the cell button.
What is the expected gross return?
Every revealed-information strategy has a 97% expected gross return in the fair support model. This is not a win probability.
How does the wallet restoration work?
If the idle balance falls below 10, you can manually restore it. This action sets the balance to exactly 1000, preserving any fractional carry.
Does fractional carry persist after a reload?
Yes, fractional carry persists through settlement, manual refill, and reload.
What happens to an unfinished round if I reload?
An unfinished round ends without refund or resume if the page is reloaded.
Are controls locked during active play?
Yes, stake, mode, and refill are locked while active. Sound remains available.
Does the demo use localStorage?
Yes, the game source uses localStorage for settled balance and fractional carry. This does not establish anonymity or exclude other processing.
Is there a login or payment flow in the demo?
No, there is no account flow or payment flow observed in the demo.
