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Hello there @susansteyn and good day to you.
There was certain time the board can be reset without having to lose a life as I've come across it before. However, like our Mr Werner pointed out, you will lose a life if you quit the level and reset it. Also there is a message that prompts you first if you wish to reset/quit the level so you get to keep your life.
I hope we have answered your questions and let us know if you need help with other issues in the game.
Thank you 😉