The following rules concern this original demo alone. Its calculations do not establish the mathematics, security, legality or catalogue of another product. There are no monetary deposits or customer accounts in the demo.
Independent guide and Odd Shelf
KA99 is a search name here without a confirmed commercial identity. This guide hosts its own Odd Shelf game. It confirms no outside operator, affiliation, official domain, licence, payment service or app. Similar naming does not establish a shared publisher.
The following rules concern this original demo alone. Its calculations do not establish the mathematics, security, legality or catalogue of another product. There are no monetary deposits or customer accounts in the demo.
Odd Shelf needs no APK
This game runs directly in the browser. The guide supplies no verified KA99 APK, package identifier, publisher signature, release number or store link. APK search wording is not proof of an application’s existence or identity.
No unknown-source permission, protection bypass, installation or device access is needed for this demo. A matching icon or version number does not establish a file’s safety. This game’s probabilities cannot validate external software.
Local storage and page requests
The game does not require a customer account, identity document or bank information. Local storage explains the balance and fractional carry, but does not imply that every request made while loading the page stays on the device.
Font, analytics, hosting and CDN requests may transmit technical information such as IP address and request details. This guide promises no complete anonymity, precise retention period, absence of profiling or third-party data-sale policy. Those questions require the providers’ own information.
Enumeration verifies the original demo only
Independent enumeration checks all 65,536 binary 4×4 boards against the odd occupied-row rule and exact hazard count. It verifies the support sizes and chosen-cell conditional probability identities. Actual-source simulations test at least a million rounds for each mode.
This is evidence about Odd Shelf, not an outside RNG certificate, licence, payment feature, app safety assessment or legal permission. A matching domain, logo, app signature or HTTPS connection does not independently establish an outside publisher.
Occupied rows have odd hazard counts
Choose 3, 5 or 7 hazards on a 4×4 board. Each occupied horizontal row contains an odd number of hazards: one or three. A row has only four cells, so five hazards in one row is impossible. Empty rows are allowed and columns have no quota.
Every legal layout is equally likely: 272 layouts for three hazards, 768 for five and 768 for seven. The hidden layout is sampled once at the start and never changes after a choice. A single captured stake covers the whole round.
Frequently asked questions
Does the search name confirm an operator?
KA99 is a search name here without a confirmed commercial identity. This guide hosts its own Odd Shelf game. It confirms no outside operator, affiliation, official domain, licence, payment service or app. Similar naming does not establish a shared publisher. The following rules concern this original demo alone. Its calculations do not establish the mathematics, security, legality or catalogue of another product. There are no monetary deposits or customer accounts in the demo.
Which occupied-row counts are allowed?
Choose 3, 5 or 7 hazards on a 4×4 board. Each occupied horizontal row contains an odd number of hazards: one or three. A row has only four cells, so five hazards in one row is impossible. Empty rows are allowed and columns have no quota. Every legal layout is equally likely: 272 layouts for three hazards, 768 for five and 768 for seven. The hidden layout is sampled once at the start and never changes after a choice. A single captured stake covers the whole round.
How is the selected cell priced?
After the opened safe cells are known, let N be the number of legal layouts consistent with that history. For an unopened cell let K be the number of those layouts where it is safe. Its safe probability is K/N. Each eligible cell shows that probability; it is not a generic remaining-safe-cells ratio. The quote starts at 0.97. A safe reveal changes quote q to q×N/K, using the probability of that very chosen cell before revealing it. A hazard ends the round with zero return. Collect returns captured stake times quote, with fractional carry. The identity (K/N)×(q×N/K)=q explains 97% expected gross return for choices using revealed information. This is not a win probability or a guaranteed session return.
Read the odd-row rules and try the original free virtual-coin demo. Play the free demo
