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Concept

Locked Positions

Positions that persist their symbols across respins - core Hold & Win mechanic

Locked positions are grid positions that persist their symbols across respins. This is a core mechanic used in Hold & Win (H&W) bonus games.

Tag: locked:true

How It Works

During Respins

When a respin occurs (e.g., in H&W bonus):

  1. The respin executor checks each position for the locked:true tag
  2. Locked positions are skipped - their symbols are preserved
  3. Unlocked positions receive new symbols from the weighted distribution

During Payout

Locked positions fully participate in payout calculations:

  • Their coin values are summed up
  • Position multipliers are applied
  • Grand Jackpot checks count locked positions

Comparison with Disabled

AspectLockedDisabled
Symbol persistsYesNo
Participates in payoutYesNo
Respins skipYesNo
Primary useH&W bonusDecorative/blocker

Example

Grid after H&W spin:
┌───┬───┬───┬───┬───┐
│ A │ B*│ K │ B*│ Q │   * = locked bonus symbol
├───┼───┼───┼───┼───┤
│ J │ 10│ B*│ A │ 9 │
├───┼───┼───┼───┼───┤
│ K │ Q │ J │ 10│ B*│
└───┴───┴───┴───┴───┘

After respin:
┌───┬───┬───┬───┬───┐
│ 9 │ B*│ Q │ B*│ B*│   New bonus landed!
├───┼───┼───┼───┼───┤   → Position locked
│ 10│ K │ B*│ J │ A │
├───┼───┼───┼───┼───┤
│ A │ J │ 10│ Q │ B*│
└───┴───┴───┴───┴───┘