Guide

Using the l77 virtual-coin demo

This independent guide explains its original Sum Product Congruence Mines demo on l77.top. A search for l77 does not establish an outside operator, licence, official app or service address. Those outside identity facts have not been verified by this guide. The demo is not a reproduction or certification of another product.

No real-money banking

This demo has no cashier, deposits, withdrawals or exchange of its play coins. Collecting a quoted return only settles virtual coins into the local wallet. It is not a bank transfer or real-money withdrawal. Payment methods, fees, document requirements and processing times of any outside l77 service have not been established by this guide.

Stake, hazard count and locked controls

Select a stake of 10, 20, 50 or 100 play coins; the default is 20. The default hazard count is 3. Stake, hazard count, refill and starting another round are locked while the current round is active. Starting captures one stake for the whole board. During the round you can make eligible reveals and, after a safe reveal, collect.

Posterior probability and current value

The initial quoted gross value is 0.97 times the captured stake. After previous safe reveals, consider only hazard sets consistent with those observations. For a selected cell, p is the fraction of the remaining sets in which it is safe. A successful reveal with 0 < p < 1 changes the current gross value V to V/p. A certainly safe cell with p = 1 leaves V unchanged; a certainly hazardous cell with p = 0 is disabled. A hazard ends the round with zero gross return. The displayed percentage is rounded to one decimal place; the calculation uses the unrounded ratio of compatible-set counts.

Collecting, the cap and automatic banking

You may collect only after at least one safe reveal. Each cell is disabled if its possible safe-result gross value would be greater than 1000 times the captured stake; equality is allowed. The game banks automatically only when no eligible uncertain choice remains. The cap alone is not a rule that every capped state auto-collects. Eligible certainly safe cells do not increase the quoted value.

Integer settlement and fractional carry

Settlement credits floor(raw gross return + stored fractional carry) to the virtual balance and retains the remainder for later settlements. A zero-return round leaves the previous fractional carry unchanged. The balance and carry are stored in browser localStorage and survive refill and reload while that site storage is retained. Carry is a payout remainder, not a clue, score or cash balance.

Reloading and browser data

Reloading before settlement leaves the already captured stake deducted and ends the unfinished round without refund, payout, continuation or resume. The stored wallet remains, but the round does not. Controls reset to stake 20 and 3 hazards. Clearing cached resource files alone may leave localStorage intact; clearing this site’s data can remove the saved wallet and carry.

Frequently asked questions

Can I collect immediately at round start?

No. You need at least one safe reveal before manual collection.

Is a return exactly 1000 times stake allowed?

Yes. Only a possible gross return strictly greater than that limit disables a choice.

Can an unfinished round resume after reload?

No. The captured stake stays deducted, without refund or payout for that round.