r1b3nr/1p1p1q2/6k1/p1npPpPp/Pb2P3/NPP2PP1/5K2/R1B2QNR b - - 0 21
FEN state: r1b3nr/1p1p1q2/6k1/p1npPpPp/Pb2P3/NPP2PP1/5K2/R1B2QNR b - - 0 21 ; Best move: b4c3
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at d7 and black queen at f7. Black king at g6. Black pawn at a5, black knight at c5, black pawn at d5, white pawn at e5, black pawn at f5, white pawn at g5 and black pawn at h5. White pawn at a4, black bishop at b4 and white pawn at e4. White knight at a3, white pawn at b3, white pawn at c3, white pawn at f3 and white pawn at g3. White king at f2. White rook at a1, white bishop at c1, white queen at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.