## ADDED Requirements

### Requirement: Side pots are created when players go all-in at different bet levels
When one or more players go all-in for less than the current bet level, the system SHALL create separate side pots to ensure only eligible players can win chips they contributed to.

#### Scenario: Single all-in creates main pot and side pot
- **WHEN** Player A bets 100, Player B goes all-in for 50, and Player C calls 100
- **THEN** a main pot of 150 (50×3) is created with all three players eligible, and a side pot of 100 (25×4) is created with Players A and C eligible

#### Scenario: Multiple all-ins create multiple side pots
- **WHEN** Player A bets 200, Player B goes all-in for 100, Player C goes all-in for 150, and Player D calls 200
- **THEN** a main pot of 400 (100×4) is created with all players eligible, a side pot of 100 (50×3) is created with Players A, C, D eligible, and a side pot of 100 (50×2) is created with Players A and D eligible

### Requirement: Side pots are awarded to eligible winners only
When determining winners for each pot, the system SHALL only award a pot to players who contributed chips to that specific pot level.

#### Scenario: All-in player wins main pot only
- **WHEN** Player B is all-in for 50 and has the best hand at showdown, Player A and C are still active with worse hands
- **THEN** Player B receives the main pot amount proportional to their contribution, and Players A/C compete for the side pot

#### Scenario: All-in player loses all pots
- **WHEN** Player B is all-in for 50 and has the worst hand at showdown
- **THEN** Player B receives no chips from any pot, and eligible players split the main pot proportionally

### Requirement: Side pot calculation handles edge cases correctly
The system SHALL correctly calculate side pots when all players go all-in or when an all-in does not constitute a raise.

#### Scenario: All players all-in creates single pot
- **WHEN** all remaining players go all-in during a betting round
- **THEN** a single main pot containing all chips is created with all players eligible, and no side pots are generated

#### Scenario: All-in that doesn't raise does not create side pot
- **WHEN** the current bet is 100 and Player B goes all-in for 80 (less than a full raise)
- **THEN** no side pot is created; the main pot contains all chips and active players may check to continue