Light Blue ice: Normal hardness,
Dark Blue ice: Too solid for your little pickaxe!,
White ice: Fragile; your pickaxe is so strong this gets destroyed fast!!,
Cloudy Light blue ice: A diamond is in it!,
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Light Blue ice usually is near surface, but also is underground often. Dark blue ice is underground, but rarely is at surface. It also may lead you to diamonds!! White ice can be anywhere. The rarest of all is cloudy ice.
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Somewhere at the end of the screen is the path to winning...