Game guide · SNAZN
Play Gin Score Calculator with the rules at hand
Look at the complete hand before deciding. 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. Keep the active rule in mind. Enter the knocker’s deadwood from 0 to 10. Zero means Gin. Use another round to revisit a decision.
Fixed house bonuses of 25. It does not include line bonuses or a match-end bonus.
Give this approach a try
Keep the active rule in mind. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. Return to the explanation when a decision is unclear.
Your objective
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use another round to revisit a decision. For a calm first round, focus on one decision.
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.
Your inputs
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Check the relevant controls before continuing. Treat this as a chance to practise one rule.
See how the rules apply
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
Use the rule sheet as a reference. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Use another round to revisit a decision.
More answers before you play
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. Return to the explanation when a decision is unclear.
How do I use the controls?
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Before making a move, check the cards in view. Take the next action only when the current step is clear.
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. 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. Treat this as a chance to practise one rule. 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. Look at the complete hand before deciding. The same rule applies on a phone and on a computer.
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. 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. Begin with the objective. 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. Use the rule sheet as a reference. Use another round to revisit a decision.
Do I need an account or an app?
No. Open the page in a JavaScript-enabled browser. No player account or APK is needed. For a calm first round, focus on one decision. Check the relevant controls before continuing.
Are these scores cash or prizes?
No. Points are used only for free play and practice. There are no deposits, cash stakes or withdrawals. Before making a move, check the cards in view. Use another round to revisit a decision.
