Great puzzle! Just challenging enough to be fun without being too difficult. Background colour is nothing at all like the board colour & not difficult to see at all.

Great puzzle! Just challenging enough to be fun without being too difficult. Background colour is nothing at all like the board colour & not difficult to see at all.

The main color is virtually indistinguishable from the default background which makes it unnecessarily hard to see what you're doing.

The main color is virtually indistinguishable from the default background which makes it unnecessarily hard to see what you're doing.

Beautiful. I liked to solve this, because I couldn't guess anything.

Beautiful. I liked to solve this, because I couldn't guess anything.