Firstly this is one of the most underrated anime I have ever come across. Not even the anime blogs that I follow have mentioned about this gem. It might be that since the main lead is a Shogi player and the game is not that popular across the world. But don't let that obstruct you from having a go at this.
There are 2 seasons released as of now and the story is still running in the Manga.
The 1st season starts off the story introducing us with wide variety of characters, all pretty well structured. We gradually get to know the past and present of Rei Kiriyama and his struggles to lead a life as a pro Shogi player. His relationship with the three Kawamoto sisters are thing to gaze upon.
The 2nd season gets deeply into the lives of all the characters and shows how each are overcoming their difficulties to lead a happy life. Especially Hinata's story is the most gripping one as she encounters hardships at school.
The dialogues are outstanding in this anime. I would suggest to watch the English dubbed version. They have done a wonderful job in retaining the core emotions in every scene.
Overall this anime sure comes into my top 5 favourite anime of all time.