Game guide · YCBY120
The Gin Score Calculator playbook
Take a moment to read the table. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Return to the explanation when a decision is unclear. Keep the active rule in mind. Enter the knocker’s deadwood from 0 to 10. Zero means Gin. Take the next action only when the current step is clear.
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus.
Practice beyond the first move
A clear plan starts with the current position. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. The same rule applies on a phone and on a computer.
What the game asks you to do
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use another round to revisit a decision. Before making a move, check the cards in view.
Step by step
- Enter the knocker’s deadwood from 0 to 10. Zero means Gin.
- Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed.
- Calculate the result. Gin scores 25 plus defender deadwood; an undercut scores 25 plus the difference.
- For an ordinary successful knock, the knocker scores only the positive difference.
How to interact with the game
Use the two numeric fields, then Calculate score. This tool uses whole numbers. The same rule applies on a phone and on a computer. Work at your own pace.
An example before you play
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. The same rule applies on a phone and on a computer.
An important reminder
Treat this as a chance to practise one rule. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Take the next action only when the current step is clear.
Read these answers for extra help
What is the aim?
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Keep the active rule in mind. The same rule applies on a phone and on a computer.
How do I use the controls?
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Begin with the objective. Check the relevant controls before continuing.
Which format is available?
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus. A clear plan starts with the current position. Use another round to revisit a decision.
What should I check before a move?
Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. For a calm first round, focus on one decision. Check the relevant controls before continuing.
Can you give an example?
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. Work at your own pace. Take the next action only when the current step is clear.
How is a tie scored?
A non-Gin deadwood tie is an undercut, so the defender receives 25 points. Use the rule sheet as a reference. The same rule applies on a phone and on a computer.
Can I use other Gin bonus values?
This calculator uses the same 25/25 values as this site’s Gin table. Take a moment to read the table. Check the relevant controls before continuing.
Does it automatically lay off cards?
No. Enter the defender’s final value after layoffs. The playable Gin table performs card-based layoff analysis. Work at your own pace. Check the relevant controls before continuing.
Do I need an account or an app?
No. Open the page in a JavaScript-enabled browser. No player account or APK is needed. Take a moment to read the table. Use another round to revisit a decision.
Are these scores cash or prizes?
No. Points are used only for free play and practice. There are no deposits, cash stakes or withdrawals. A clear plan starts with the current position. Use another round to revisit a decision.