r1bqk1nr/Pppppp2/8/2n3p1/N3N3/P2PP2p/2PbKP2/R2Q1B1R b kq - 3 18
FEN state: r1bqk1nr/Pppppp2/8/2n3p1/N3N3/P2PP2p/2PbKP2/R2Q1B1R b kq - 3 18 ; Best move: c5a4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black knight at g8 and black rook at h8. White pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at e7 and black pawn at f7. Black knight at c5 and black pawn at g5. White knight at a4 and white knight at e4. White pawn at a3, white pawn at d3, white pawn at e3 and black pawn at h3. White pawn at c2, black bishop at d2, white king at e2 and white pawn at f2. White rook at a1, white queen at d1, white bishop at f1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 3. Full move number is 18. Black to move.