1nb1kb1r/7p/r1pp1pp1/8/QPPP1Pn1/3R3N/1B1KP2P/5B1R w - - 1 21
FEN state: 1nb1kb1r/7p/r1pp1pp1/8/QPPP1Pn1/3R3N/1B1KP2P/5B1R w - - 1 21 ; Best move: a4b3
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at h7. Black rook at a6, black pawn at c6, black pawn at d6, black pawn at f6 and black pawn at g6. White queen at a4, white pawn at b4, white pawn at c4, white pawn at d4, white pawn at f4 and black knight at g4. White rook at d3 and white knight at h3. White bishop at b2, white king at d2, white pawn at e2 and white pawn at h2. White bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.