脳活パズル a白丸黒丸　問題80問

Brain puzzle aWhite-Black Pearls is a logic-based line placement puzzle.

This game is said to be ""Masyu"" or ""WhitePearls-BlackPearls"",

and It is a puzzle making one ring to go along WhitePearls and the BlackPearls of the board side.

1. Because there are 20 problems of the beginner play and 60 problems of the intermediate person play, the first person can enjoy it.

2. Because there are undo, an automatic preservation function, You can ease operation.

3. there are a function to reduce a screen and function to spread.

4. A record of the completion time is stored.

5. Because BGM 50 pieces prepare, You can choose a favorite thing.