Kuromasu puzzles. 4 levels of difficulty. No fuss, no frills.
Complete all Kuromasu (黒どこ kurodoko) puzzles ranging in difficulty from 'mild' to 'super fiendish' in this clean and attractive free Kuromasu app for Android.
Fill them out as you would on paper: no fuss, no frills, no hints! Start out easy or dive straight in at the 'super fiendish' level! Can you solve them all?