About Row Boundary Equality

Row Boundary Equality uses a four-by-four board. The mine count is selected from exact nonempty support configurations defined in the source. A board is drawn uniformly from all boards where every row has equal first and last occupancy bits. This constraint defines an exact finite board support.

Scoring and Payout

• Gross quote = 0.96 × captured stake × initial support size / current compatible support size.
• Mine returns zero.
• Cells with zero conditional safe probability are disabled.
• Cells whose safe quote would exceed 1000 times stake are disabled.

Stopping and Banking

• A manual bank becomes available only after at least one safe reveal.
• When no eligible cell remains, the current quote is banked automatically.
• A mine ends the round with zero gross.

The demo wallet has an initial balance of 1000 virtual coins. Fractional carry persists across settlement, refill, and reload.

Refill Rule

• Manual idle-only restoration is available when the balance is below 10.
• Restoration sets the integer balance to exactly 1000.
• Refill does not add coins; it sets the balance.

Persistence

• Settled balance persists locally, including zero.
• An unfinished round ending on reload ends without refund or resume.
• No account recovery or network-synchronized account exists.

The game uses a uniform legal-board support at the selected mine count. The exact gross RTP is 0.96. Measured RTP values are supporting observations and do not promise session results.

• Four-by-four board; mine count choices are only the exact nonempty support configurations in the source.
• Captured stake and mine count are locked throughout the round.
• Sound remains available.
• No auto queue; manual idle-only refill.
• Manual bank becomes available only after at least one safe reveal.

Source uses browser localStorage for settled demo balance and fractional carry. This does not establish anonymity or exclude other processing. The page declares Google Fonts requests and the production builder includes Statinside visitor counter 44. These observations do not establish anonymity or absence of other processing. The absence of account or payment controls in the demo does not prove that no personal data are processed.

18+ is this guide’s intended audience policy, rather than an assertion of local law or an implemented age gate. You may choose a personal time or virtual-coin limit and take a break. These are personal decisions; the demo has no timer, account-level blocking or self-exclusion control. Seek appropriate local qualified support if play concerns you.