American Mahjong Scorekeeping Mistakes
Most scorekeeping disputes are not caused by difficult arithmetic. They come from missing information, inconsistent bonus rules, delayed entries, or a failure to verify the card line before the tiles are mixed.
Frequent Scorekeeping Errors
- Wrong printed value
- The scorer reads the amount from a nearby card line rather than the completed hand.
- Unstated bonus
- A self-pick or jokerless premium is applied even though the table never agreed to it.
- Missing discarder
- The system treats the discarder differently, but the score sheet does not identify that player.
- Delayed entry
- The result is reconstructed after the next game has begun.
- Unbalanced bank
- In a fixed-bank system, the recorded gains and losses do not offset each other.
Quick Accuracy Check
- Confirm one exact card line and its printed value.
- Identify self-pick or called discard.
- Check whether the complete hand is truly jokerless.
- Apply only agreed bonuses and penalties.
- Record every player's change, not only the winner's gain.
- Recalculate the running totals before wall building begins again.
Ambiguous Entry Versus Useful Entry
Ambiguous
“Pat won 50.” It omits the game number, winning method, card value, and effect on the other players.
Useful
“Game 6: Pat, 25-point line, self-pick, agreed double; each opponent -50.” The reason for every balance change is visible.
Do Not Count an Ineligible Bonus
A hand is not jokerless merely because no joker appears in one exposed group. Inspect the complete winning hand. Likewise, do not add a concealed premium automatically when the card's printed value or the table's scoring method already accounts for the hand type.
Correct Errors Transparently
When a mistake is discovered, preserve the original entry with a clear correction note. Silent overwriting makes later reconciliation harder and can create the appearance that balances were changed without agreement.
Scorekeeping Error Questions
What if the arithmetic is wrong but everyone remembers the hand?
Recalculate from the verified card value and agreed rules, then annotate the correction on the score sheet.
What if the tiles were mixed before the hand was verified?
The table may no longer have enough evidence to resolve the claim confidently. Use the group's stated procedure and reinforce verification before future mixing.
How often should running balances be checked?
After every game. Small errors are much easier to locate immediately than at the end of a long session.