rnbq4/2ppbkr1/p5pp/1p3p1P/PPPNp1n1/4PPP1/1B1PK1B1/RN1QR3 b - - 6 21
FEN state: rnbq4/2ppbkr1/p5pp/1p3p1P/PPPNp1n1/4PPP1/1B1PK1B1/RN1QR3 b - - 6 21 ; Best move: g4f6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black queen at d8. Black pawn at c7, black pawn at d7, black bishop at e7, black king at f7 and black rook at g7. Black pawn at a6, black pawn at g6 and black pawn at h6. Black pawn at b5, black pawn at f5 and white pawn at h5. White pawn at a4, white pawn at b4, white pawn at c4, white knight at d4, black pawn at e4 and black knight at g4. White pawn at e3, white pawn at f3 and white pawn at g3. White bishop at b2, white pawn at d2, white king at e2 and white bishop at g2. White rook at a1, white knight at b1, white queen at d1 and white rook at e1. Both players have exhausted their castles. Half move number is 6. Full move number is 21. Black to move.