Three rows and three second differences
Curvature Keys displays three independent rows. Each row contains five independent uniform digits from zero through three. For a row a0,a1,a2,a3,a4, calculate d0=a2-2a1+a0, d1=a3-2a2+a1 and d2=a4-2a3+a2. These are second differences, rather than differences between adjacent digits.
Count the equal unordered pairs among d0,d1,d2. Three distinct values score zero; exactly two equal values score one; all three equal values score three. A score of two is impossible because equality is transitive. The displayed differences allow you to check the score directly.
Check the equal-pair score
For the row 0,1,2,3,3, the second differences are 0,0,-1. One equal pair gives raw score one. For 0,0,0,0,0, all three differences are zero and there are three equal pairs, giving raw score three. For 0,0,1,0,0, the differences are 1,-2,1 and score one.
Negative differences are ordinary inputs to the equality test. Their magnitude, sum and sign do not directly pay coins. Five matching digits are not a separate jackpot: the score follows the same second-difference rule. Compare all three unordered pairs, rather than counting only adjacent matches.
Exact row weights and total gross return
Choose Low, Medium or High before the round. Positive raw scores receive square-root, identity or square weighting respectively; zero remains zero. A raw score three therefore has weight square root of three, three or nine. These are weights, not the final payout multipliers.
Each row has 4 to the fifth power, or 1,024, equally likely digit patterns. For each mode calculate its exact mean weight over those patterns. A row credits one third of the captured total stake times 0.96 times its weight divided by that mean. Add the three row returns. The total expected gross virtual return is 96% of the stake in every mode.
The stake was deducted before settlement, so credited gross return includes its stake component and is not net profit. Modes change positive payout sizes and their distribution, but leave the positive-score frequency unchanged. Expected return is not a guaranteed session result or a 96% winning chance.
Captured rounds and the persisted virtual wallet
A new browser wallet starts with 1,000 free virtual coins. Settled balance and fractional-credit carry persist locally. Reloading does not replenish the settled wallet. Fractional returns accumulate before whole coins are credited, avoiding separately discarding each fractional payout.
A round captures one total stake and one mode for all three rows. Settings and refill lock during settlement. Auto queues at most ten rounds; Stop prevents future rounds while an already active round settles. Free refill is optional, available only while idle with balance below ten, and sets balance to 1,000 while preserving fractional carry. Coins cannot be purchased, transferred, redeemed or withdrawn.
Local storage and third-party requests
Browser localStorage keeps the settled virtual balance and fractional-credit carry. Pages request Google Fonts and a Statinside analytics script. Hosting, CDN and third-party requests may expose IP address, browser, device, path and request details. No anonymity, particular retention period, cookie lifetime or complete processing profile is established.
This guide has no registration or identity-document form. That does not mean browsing produces no personal data or that records cannot be linked to someone. Cache clearing alone may leave localStorage intact. Removing site data can erase the wallet without deleting requests or records already held elsewhere. Free refill changes local game state; it is not a data-deletion tool.
Adult use and a chosen stopping time
This guide and its simulator are for adults aged 18 or older under the site rule. That is not a determination of gambling age, authorisation or service eligibility in Brazil or elsewhere. The microphone search intent does not establish a gaming platform.
Choose a stopping time outside the game, take breaks and leave when the time arrives. Free virtual losses do not need recovery and refill can remain unused. If use displaces other activities or causes distress, pause and seek qualified local support. No clinical diagnosis, treatment claim or authenticated local helpline is supplied.
Frequently asked questions
Is this an authenticated manufacturer or casino website?
No. This independent guide offers its own browser simulator and does not authenticate an external business or affiliation.
How is a row score calculated?
Compute its three second differences and count equal unordered pairs. Possible scores are zero, one and three.
Why can the score not be two?
If two pairs among three values are equal, all three values are equal. The third pair is then equal too, giving score three.
How many equally likely row patterns are there?
Each of five digits is independently uniform from zero through three, giving1,024 equally likely patterns.
Are all three rows paid from separate full stakes?
No. Each independent row uses one third of the captured total stake; their gross returns add.
Does choosing High increase the positive-score frequency?
No. All three weighting functions preserve zero and positivity. They change positive payout sizes after separate normalisation.
Does96% promise a winning chance or final balance?
No. It is exact expected gross virtual return per stake in the simulator, not a session guarantee or a win probability.
What does Stop do during automatic play?
It cancels future rounds. An already active round settles under its captured stake and mode.
When is free refill available?
Only while idle with balance below ten. It sets balance to1,000 and preserves fractional-credit carry.
Does refresh replenish the wallet?
No. Settled balance and fractional-credit carry persist in browser localStorage.
Can coins be withdrawn or transferred?
No. They have no cash value or payment route.
Does no account imply anonymous browsing?
No. Hosting, CDN, fonts and analytics requests can expose technical information without a registration form.
Open the home-page simulator to inspect its second-difference scores using free virtual coins. Take a break at your chosen stopping time.
Play the free demo