r2qkb1r/4p1pn/n2pb2p/1pp5/P2P4/1QP1pPPB/RK1NP2P/6NR b kq - 2 18
FEN state: r2qkb1r/4p1pn/n2pb2p/1pp5/P2P4/1QP1pPPB/RK1NP2P/6NR b kq - 2 18 ; Best move: e6b3
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at e7, black pawn at g7 and black knight at h7. Black knight at a6, black pawn at d6, black bishop at e6 and black pawn at h6. Black pawn at b5 and black pawn at c5. White pawn at a4 and white pawn at d4. White queen at b3, white pawn at c3, black pawn at e3, white pawn at f3, white pawn at g3 and white bishop at h3. White rook at a2, white king at b2, white knight at d2, white pawn at e2 and white pawn at h2. White knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 2. Full move number is 18. Black to move.