rn2k1nr/4qpp1/pPp4p/3Pp3/2P5/RP1B1NPb/3PKP1P/1NbQ3R b kq - 3 15
FEN state: rn2k1nr/4qpp1/pPp4p/3Pp3/2P5/RP1B1NPb/3PKP1P/1NbQ3R b kq - 3 15 ; Best move: c1a3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black knight at g8 and black rook at h8. Black queen at e7, black pawn at f7 and black pawn at g7. Black pawn at a6, white pawn at b6, black pawn at c6 and black pawn at h6. White pawn at d5 and black pawn at e5. White pawn at c4. White rook at a3, white pawn at b3, white bishop at d3, white knight at f3, white pawn at g3 and black bishop at h3. White pawn at d2, white king at e2, white pawn at f2 and white pawn at h2. White knight at b1, black bishop at c1, white queen at d1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 3. Full move number is 15. Black to move.