Uniform layouts and equal rim/interior quota
Choose 2, 4 or 6 hazards on a 4×4 grid. Exactly half occupy the outer 12 cells and half the inner 4 cells. All 48/396/880 legal layouts respectively have equal probability. One randomly chosen layout remains fixed for the entire round.
Counting compatible layouts
With 2 hazards, each outer cell initially has safe probability 11/12 and each inner cell 3/4. A safe first outer cell from a 20-coin stake gives 20×0.97/(11/12), about 21.164 coins; an inner cell gives about 25.867. Subsequent probabilities count only compatible layouts and may increase or decrease.
Collecting and eligibility limits
Collect is available after a safe reveal. Proven hazards are unavailable; proven-safe cells have probability 1 and add no value. A choice with next value above 1000 times stake is unavailable. When no eligible uncertain choice remains, the current value is banked automatically. The guard is not a promise that 1000×stake can be reached.
Wallet persistence and refill
Settled balance and fractional payout carry persist in localStorage. Reloading during a round ends it without refunding its already deducted stake. Outside a round, refill restores 1000 coins when balance is below the smallest stake; it does not add 1000 or reset fractional carry. Hazard count, stake and refill are locked during play.
Technical data and third parties
There are no account, payment or identity-document forms here. Fonts, the visit counter, server and CDN requests can expose technical data including IP and browser details. Complete anonymity, third-party data use and cookie lifetimes are not established. Clearing cache alone may leave localStorage intact.
Frequently asked questions
Is this an operator website?
This independent 1996 WC guide supplies its own free Rim Balance Mines demo. Operator identity, domains, licence, apps, payments, support and commercial game equivalence have not been independently verified. No operator account or commercial link is supplied here.
What is the rim/interior rule?
Choose 2, 4 or 6 hazards on a 4×4 grid. Exactly half occupy the outer 12 cells and half the inner 4 cells. All 48/396/880 legal layouts respectively have equal probability. One randomly chosen layout remains fixed for the entire round.
How is the live value calculated?
Live value starts at 0.97 times the virtual stake. A safe reveal divides it by that cell’s exact conditional safe probability among the remaining compatible legal layouts. A hazard ends the round with zero return. Reveals change knowledge, not the hidden layout.
How are safe probabilities counted?
With 2 hazards, each outer cell initially has safe probability 11/12 and each inner cell 3/4. A safe first outer cell from a 20-coin stake gives 20×0.97/(11/12), about 21.164 coins; an inner cell gives about 25.867. Subsequent probabilities count only compatible layouts and may increase or decrease.
When can I collect?
Collect is available after a safe reveal. Proven hazards are unavailable; proven-safe cells have probability 1 and add no value. A choice with next value above 1000 times stake is unavailable. When no eligible uncertain choice remains, the current value is banked automatically. The guard is not a promise that 1000×stake can be reached.
Explore the free Rim Balance game and its exact conditional cell odds.
