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