Own-site rules
These rules describe only this original virtual game. This guide does not determine legal availability of an external service, certify its fairness or promise income. The own-site 18+ restriction is not a statement about every jurisdiction’s legal age.
Two even coordinate sums
Choose 3, 4 or 5 hazards on a 4×4 board. Number rows and columns from 0 to 3, top to bottom and left to right. Add the row indices of all hazards and, separately, their column indices. Both sums must be even. Individual indices need not be even, and this does not require an even hazard count in every row or column. All 140, 476 or 1092 legal layouts respectively are equally likely; one stays fixed throughout the round.
Wallet and restoring balance
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
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.
Explore the original free Even Coordinates Mines game.
