Anti Diagonal One Equality: Rules and Math Guide

The game is played on a four-by-four grid. Unlike standard mines games that draw from all possible boards, this demo draws uniformly from a specific subset of boards called the legal-board support. The support is defined by a strict public rule: among the three neighboring pairs along the anti-diagonal, exactly one pair must have equal occupancy bits. This constraint reduces the total number of possible boards for any given mine count, creating a unique mathematical environment.

For example, with three mines selected, the initial support size is 134 boards. This finite set defines the probability space for the round. As you reveal safe cells, the support is filtered, and the number of compatible boards decreases. This filtering drives the increase in your potential payout, as the gross quote is calculated based on the ratio of the initial support to the current remaining support.

Before you start playing the in22 demo, it is important to understand that this is an independent information site, not the official operator. While the demo itself is free, you should always verify the broader context of the brand. In Malaysia, gambling is tightly restricted by national law, and online gambling laws can be complex depending on your state and the operator's location. Always check the latest regulations to ensure you are compliant.

When using the in22 platform for any real-money features in the future, you should check the following details directly on their website:

• Currency and Payments: Confirm if the operator supports MYR directly or if they use USD. Check which local payment methods like Touch 'n Go eWallet or DuitNow are currently listed as available options, as these can change without notice.
• Licensing: Verify if in22 holds a valid licence from a recognised authority (such as Curacao or Isle of Man). Do not assume they are licensed in Malaysia unless explicitly stated on their official terms page.
• Safety Steps: Use a secure internet connection. Since this is a demo, no real money is at risk, but always read the terms and conditions regarding virtual coin refunds or account restrictions.

The interface features a four-by-four board. You choose a mine count from the exact nonempty support configurations available in the source. Once the round starts, the captured stake and selected mine count are locked until the round ends. You cannot change these settings during the active round.

Controls are minimal but precise. You can click eligible cells to reveal them. A manual bank button becomes available only after at least one safe reveal has occurred. There is no auto-queue for reveals or cashouts. Sound remains available throughout the round. When no eligible cell remains or you manually bank, the round ends. A manual refill is available only when the interface is idle, allowing you to restore your wallet.

The core payout mechanism relies on the shrinking support size. The gross quote for any safe reveal is calculated as 0.96 multiplied by the captured stake, multiplied by the initial support count, divided by the current compatible support count. This means your potential return increases as the support shrinks through successful reveals.

If you reveal a mine, the round ends immediately with a gross return of zero. Cells with zero conditional safe probability are disabled, as are cells where the safe quote would exceed the 1000-times-stake cap. If no eligible reveal remains, the current quote is automatically banked. The gross quote includes the stake, so the net change is the gross quote minus the captured stake.

The exact gross Return to Player (RTP) for this game is 0.96, or 96%. This is a mathematical expectation, not a guarantee for any single session. Simulation data supports this expectation across various mine counts and policies. For instance, with three mines and a policy of revealing one cell, the measured RTP over one million rounds was approximately 96.07%. With five mines and a policy revealing two cells, the measured RTP was approximately 96.00%.

These measurements are sample observations from large simulations. The exact RTP remains 96% regardless of the strategy or path taken, as the game is fair within its defined support. The table below shows specific measured outcomes for reference.

The demo wallet starts with an initial balance of 1000 virtual coins. This balance persists locally in your browser's localStorage, along with any fractional carry from previous rounds. If your balance falls below 10 while idle, you can manually trigger a refill. This action sets the integer wallet to 1000 and preserves any fractional carry. The refill is not automatic and does not add the reset amount; it simply restores the balance to the specified level.

If you reload the page during an active round, the unfinished round ends without refund or resume. The saved wallet balance remains, but the specific round progress is lost. Fractional carry persists across settlement, refill, and reload, ensuring that small fractional amounts are not lost between sessions.

This guide is an independent review of the demo. The identity of the operator is unverified except for individually reviewed primary-source facts. The demo uses browser localStorage for balance and carry, which does not establish anonymity or exclude other processing. The template declares a Google Fonts stylesheet, but actual browser request capture is pending.

The intended audience for this guide is 18+. This is a policy recommendation, not a claim about local law or an implemented age gate. There is no cash value for the virtual coins, no cashier, and no KYC requirement. Responsible use involves voluntary breaks and self-monitored limits. Game caps and resets are mechanics, not guarantees of safe behavior.