Game guide · CTCPX
Getting started with Gin Score Calculator
For a calm first round, focus on one decision. Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Check the relevant controls before continuing. Take a moment to read the table. 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.
Take a closer look while playing
Keep the active rule in mind. Enter the defender’s deadwood after any legal layoffs; against Gin no layoff is allowed. Check the relevant controls before continuing.
Your objective
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. The same rule applies on a phone and on a computer. Before making a move, check the cards in view.
The order of play
- 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.
Input guidance
Use the two numeric fields, then Calculate score. This tool uses whole numbers. Use another round to revisit a decision. Treat this as a chance to practise one rule.
An example to follow
A knock of 8 against 5 is an undercut: the defender receives 28. Gin against 18 earns the knocker 43. Return to the explanation when a decision is unclear.
Check this before moving on
Treat this as a chance to practise one rule. Enter post-layoff values. This arithmetic tool does not choose card groupings from card images. Return to the explanation when a decision is unclear.
Game-specific help
What is the aim?
Calculate a Gin hand score from the knocker’s and defender’s final deadwood totals. Use the rule sheet as a reference. 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. Treat this as a chance to practise one rule. 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. Begin with the objective. 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. For a calm first round, focus on one decision. Take the next action only when the current step is clear.
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. Return to the explanation when a decision is unclear.
How is a tie scored?
A non-Gin deadwood tie is an undercut, so the defender receives 25 points. Keep the active rule in mind. 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. Work at your own pace. 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. 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. Look at the complete hand before deciding. 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. Take a moment to read the table. The same rule applies on a phone and on a computer.