It covers kanjis consisting of 2 parts. Once you match the 2 parts, you can find the kanji.
Tap the hint button to find the part that matches the colored part of the matching kanji, or the kanji itself.
The colored part that matches the meaning and the part on the other white background, or kanji, combine. Tap the colored part first, and then the matching part or the kanji. Kanji consisting of matching parts appears in the middle. Tap the kanji in the middle, and then, continue.
KOKU / kuni
country, state