Three occupied rows with distinct counts
Choose6,7 or8 hazards on a4×4 board. Exactly three rows contain hazards; their positive hazard counts are all different. The fourth row is empty. Counts are1/2/3 for6;1/2/4 for7;1/3/4 for8, in any row order. All2304/576/384legal layouts respectively are equally likely andfixed during a round.
Initial and updated safe probabilities
With6 hazards, row A cells1,2,3;row B cells1,2;row C cell1 is legal, withcounts3/2/1 andemptyrowD. Rowswith2/2/2 hazards areillegal becausecountsrepeat. Beforeanyreveal eachcell is safe with probability(16−hazards)/16; later probabilities use only compatible layouts andcanriseorfall.
Exact conditional value
Live value starts at 0.97 times the virtual stake. A safe reveal divides it by that cell’s exact conditional safe probability among the remaining compatible legal layouts. A hazard ends the round with zero return. Reveals change knowledge, not the hidden layout.
Collect and eligible choices
Collect is available after a safe reveal. Proven hazards are unavailable; proven-safe cells have probability 1 and add no value. A choice with next value above 1000 times stake is unavailable. When no eligible uncertain choice remains, the current value is banked automatically. The guard is not a promise that 1000×stake can be reached.
Expected return and variance
Exact expected return is 97% for permitted stopping policies. The initial 3% reduction is applied once; conditional safe-branch compensation preserves expectation. Choosing coordinates or stopping changes risk and variance, not this expectation. A short session is not guaranteed to match it.
Frequently asked questions
Is this an operator website?
This independent Xvive guide supplies its own free Signal Stair Mines demo. Operator identity, domains, licence, apps, payments, support and commercial game equivalence have not been independently verified. No operator account or commercial link is supplied here.
What are the three occupied-row counts?
Choose6,7 or8 hazards on a4×4 board. Exactly three rows contain hazards; their positive hazard counts are all different. The fourth row is empty. Counts are1/2/3 for6;1/2/4 for7;1/3/4 for8, in any row order. All2304/576/384legal layouts respectively are equally likely andfixed during a round.
How is value calculated?
Live value starts at 0.97 times the virtual stake. A safe reveal divides it by that cell’s exact conditional safe probability among the remaining compatible legal layouts. A hazard ends the round with zero return. Reveals change knowledge, not the hidden layout.
How do odds change after a reveal?
With6 hazards, row A cells1,2,3;row B cells1,2;row C cell1 is legal, withcounts3/2/1 andemptyrowD. Rowswith2/2/2 hazards areillegal becausecountsrepeat. Beforeanyreveal eachcell is safe with probability(16−hazards)/16; later probabilities use only compatible layouts andcanriseorfall.
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