28Z
PTENFree demo game
Guide

28z — Contact Graph

28z — Contact Graph.

Choose a virtual stake to test the connector bank.

Free demo · virtual coins only

Free demo game

Practice with virtual coins — no deposit, no real money, no account.

18+ onlyVirtual coins, no cash valueNo sign-up, no deposit

Rules and exact mathematics

Twelve independent fair bits are sampled once at round start and revealed one per second.

They mark the 12 edges between three left vertices A/B/C and four right vertices 0/1/2/3, in order A 0,A 1,A 2,A 3,B 0,...,C 3.

Bit 1 opens an edge;0 closes it.

Terminal reward is 1 if all seven vertices have at least one open incident edge, otherwise 0.

This is coverage, not a connected-path requirement.

Exactly 2161 of 4096 complete layouts cover all vertices; initial expected reward 2161/4096.

Quote=0.97×exact conditional coverage probability÷(2161/4096), and may rise or fall.

Allknown-covered vertices fix maxquote 0.97×4096/2161≈1.838556224.

Auto 2/3/5 cannot trigger; final settlement applies.

Collect initially at 0.97 or after a reveal, or preselect automatic 1.2/1.5/2/3/5.

The first upward crossing pays the full actual quote.

A vertex with all incident edges closed proves failure and ends immediately; reveal 12 settles automatically.

Every revealed-information stopping policy has exactly 97% expected gross return, not 97%winchance or guaranteed balance.

Hidden bits are never resampled while quoting.

Wallet and fractional credits persist after reload.

Idle balance below 10 may be restored to 1,000 free coins.

Automatic collection

Automatic collection: By hand, 1.2×, 1.5×, 2×, 3×, 5×.

Collect contact value

Virtual stake

Virtual stake: 10, 20, 50, 100.

Restore balance. Balance restored to 1,000 coins.

Free demo · virtual coins only

Contact Graph

Covered vertices

At least one vertex cannot receive an open edge. The test ends.

Restore balance

Balance restored to 1,000 coins. Free demo · virtual coins only

Try our independent Contact Graph with virtual coins.

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