rn3bnr/2k1pp1p/p2pb3/Ppp3P1/N1PN4/P2P2P1/3BPP2/R2QKB1R b KQ - 0 18
FEN state: rn3bnr/2k1pp1p/p2pb3/Ppp3P1/N1PN4/P2P2P1/3BPP2/R2QKB1R b KQ - 0 18 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8, black knight at g8 and black rook at h8. Black king at c7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at d6 and black bishop at e6. White pawn at a5, black pawn at b5, black pawn at c5 and white pawn at g5. White knight at a4, white pawn at c4 and white knight at d4. White pawn at a3, white pawn at d3 and white pawn at g3. White bishop at d2, white pawn at e2 and white pawn at f2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 18. Black to move.