JaJa Uma! Quartet
English name: Wild Cardz
Genres: Adventure, Comedy, Fantasy
Type: OVA, Episodes: 2
Aired: May 21, 1997 to Sep 26, 1997
Studio: Movic, Studio OX
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
The Crown Knights are a bizarre special force to fight to the criminals who threaten the tranquil Card Kingdom. Each one had a special ability. But these Crown Knights must get down and dirty when they run up against two war machines shaped like gigantic chess pieces. The deck is stacked against them, somehow they've got the checkmate these indestructible invaders before the Card Kingdom topples. 

(Source: ANN)