Wheel type
Distinguish single-zero from other layouts.
Two scopes of selection
A single-number selection covers a narrow set of outcomes. A colour, odd/even or other group selection covers a larger set. Broader coverage still does not guarantee the outcome of a round.
A European single-zero wheel differs from other wheel formats. An additional zero or special feature changes relevant conditions and probabilities. A special word in a version’s name calls for its own rules to be read.
If a result is 17, a selection on 17 and a group containing 17 are evaluated separately. A result of 0 cannot automatically be treated as part of an ordinary colour or odd/even group. The particular paytable governs actual settlement.
Three things to identify
Coverage
A number and a number group cover different sets.
Round timing
Results follow the acceptance deadline; do not assume a late action was accepted.
What result history can show
A list of previous colours or numbers records past events. A long sequence does not create a rule requiring the next result to reverse it. Do not treat history as an obligation on the next outcome.
Live and automated formats can have different presentations. Evolution describes several Roulette versions, but one version’s multipliers or controls do not apply to every table.
Roulette questions
Does the previous result determine the next?
No. History cannot guarantee the next number.
What does single-zero mean?
A wheel format containing one 0, distinct from other zero arrangements.
Is a colour selection risk-free?
No. Covering more numbers does not guarantee a result.
What should I keep after a connection loss?
Record the table, time, round reference and acceptance message without secret details.