In the Microsoft jigsaw puzzle of Windows 10, you can earn gold coins by completing daily challenges. These gold coins can be used to unlock new puzzle packages and buy additional puzzle boards and styles.

To use your gold coins, please follow the following steps:

Open the Microsoft jigsaw puzzle and enter the store page.

Browse the available puzzle packages and styles, and select the items you want to buy.

Click the "Buy" button.

If your gold coin balance is enough to pay the price of the selected item, the system will deduct the corresponding gold coin and add the item to your game library.

Please note that some puzzle bags and styles need more gold coins to unlock. Complete more daily challenges or buy a gold coin bag to get more gold coins.