Unverified financial services
No payment methods, transaction fees, processing times, limits, KYC documents or account eligibility have been verified for an operator. This guide does not supply deposit instructions or payment destinations. Its local coins cannot fund an external account.
External claims
A matching brand, professional design, search result or HTTPS connection does not verify ownership, authorisation or safety. Match any claim against an independent regulator register, including entity, current status, scope and listed domains. No operator licence or service is endorsed here.
Local coins and default controls
Local demo coins cannot be exchanged for money, withdrawn or used as evidence of an operator balance. Settings return to the interface defaults on reload; settled wallet and fractional carry persist. The game is not an authentication or external-security test.
Wallet and manual restore
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.
Frequently asked questions
Is this an operator website?
This independent KM 23 guide supplies its own free Edge Span 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 are the edge constraints?
Choose 3, 4 or 5 hazards on a 4×4 board. Hazards must touch both the left and right edges, while they must not touch both top and bottom edges together. Touching only the top, only the bottom, or neither is allowed. All 124, 475, 1048 legal layouts respectively are equally likely and remain fixed during a round. Connectedness is not required.
Can hazards touch the top edge?
With 3 hazards, A1, B2 and A4 is legal: it touches left, right and top, but not bottom. A1, B2 and D4 is illegal because it touches both top and bottom. B1, B2 and C4 is legal without touching top or bottom. Visible edge conditions constrain a complete layout, not a guaranteed safe cell.
Explore the original free Edge Span Mines demo.
