Uniform two-component hazard layouts
Choose 3, 4 or 5 hazards on a 4×4 grid. Hazards form exactly two separate orthogonally connected groups. Shared horizontal or vertical edges connect cells; diagonal contact does not. All 232/534/1076 legal layouts respectively have equal probability; one random layout stays fixed throughout the round.
Corner and inner-cell example
With 3 hazards, a corner is initially safe in 192 of 232 layouts and an inner cell in 188 of 232. A safe first corner from a 20-coin stake gives 20×0.97×232/192, about 23.442 coins. Coordinates affect conditional probabilities from the first choice; unrestricted-board formulas do not apply.
Collecting and automatic settlement
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.
Independent guide
This independent Lexi 125 guide supplies its own free Twin Islands 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.
Frequently asked questions
Is this an operator website?
This independent Lexi 125 guide supplies its own free Twin Islands 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 public layout rule?
Choose 3, 4 or 5 hazards on a 4×4 grid. Hazards form exactly two separate orthogonally connected groups. Shared horizontal or vertical edges connect cells; diagonal contact does not. All 232/534/1076 legal layouts respectively have equal probability; one random layout stays fixed throughout the 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.
Do first-cell coordinates matter?
With 3 hazards, a corner is initially safe in 192 of 232 layouts and an inner cell in 188 of 232. A safe first corner from a 20-coin stake gives 20×0.97×232/192, about 23.442 coins. Coordinates affect conditional probabilities from the first choice; unrestricted-board formulas do not apply.
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 Twin Islands demo and its exact conditional cell odds.
