6n1/r1pb1kb1/p1n4r/1p1pp1pP/3P1p1q/1NPQP2P/PP3P2/R1B1KB1R b - - 4 21
FEN state: 6n1/r1pb1kb1/p1n4r/1p1pp1pP/3P1p1q/1NPQP2P/PP3P2/R1B1KB1R b - - 4 21 ; Best move: g8e7
The current state of the chess board is: Black knight at g8. Black rook at a7, black pawn at c7, black bishop at d7, black king at f7 and black bishop at g7. Black pawn at a6, black knight at c6 and black rook at h6. Black pawn at b5, black pawn at d5, black pawn at e5, black pawn at g5 and white pawn at h5. White pawn at d4, black pawn at f4 and black queen at h4. White knight at b3, white pawn at c3, white queen at d3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at b2 and white pawn at f2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.