1rb1k1n1/p1p2q2/3pp2r/npb2ppp/P2P1P1P/RP2B1PN/2PKP3/1NQ2B1R b - - 2 15
FEN state: 1rb1k1n1/p1p2q2/3pp2r/npb2ppp/P2P1P1P/RP2B1PN/2PKP3/1NQ2B1R b - - 2 15 ; Best move: c5a3
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at c7 and black queen at f7. Black pawn at d6, black pawn at e6 and black rook at h6. Black knight at a5, black pawn at b5, black bishop at c5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at a4, white pawn at d4, white pawn at f4 and white pawn at h4. White rook at a3, white pawn at b3, white bishop at e3, white pawn at g3 and white knight at h3. White pawn at c2, white king at d2 and white pawn at e2. White knight at b1, white queen at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 15. Black to move.