rnb1k3/1p1p1pp1/1q4pr/4b3/2N3nP/PPP1pPR1/1B1PP3/RNK2B2 b - - 5 21
FEN state: rnb1k3/1p1p1pp1/1q4pr/4b3/2N3nP/PPP1pPR1/1B1PP3/RNK2B2 b - - 5 21 ; Best move: b6b3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black king at e8. Black pawn at b7, black pawn at d7, black pawn at f7 and black pawn at g7. Black queen at b6, black pawn at g6 and black rook at h6. Black bishop at e5. White knight at c4, black knight at g4 and white pawn at h4. White pawn at a3, white pawn at b3, white pawn at c3, black pawn at e3, white pawn at f3 and white rook at g3. White bishop at b2, white pawn at d2 and white pawn at e2. White rook at a1, white knight at b1, white king at c1 and white bishop at f1. Both players have exhausted their castles. Half move number is 5. Full move number is 21. Black to move.