1rbqk1r1/4b1pp/p3pp2/nP1p4/PP1P3P/3Kn1PB/1p1B1P2/RN2N2R b - - 3 21
FEN state: 1rbqk1r1/4b1pp/p3pp2/nP1p4/PP1P3P/3Kn1PB/1p1B1P2/RN2N2R b - - 3 21 ; Best move: b2a1q
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at g8. Black bishop at e7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at e6 and black pawn at f6. Black knight at a5, white pawn at b5 and black pawn at d5. White pawn at a4, white pawn at b4, white pawn at d4 and white pawn at h4. White king at d3, black knight at e3, white pawn at g3 and white bishop at h3. Black pawn at b2, white bishop at d2 and white pawn at f2. White rook at a1, white knight at b1, white knight at e1 and white rook at h1. Both players have exhausted their castles. Half move number is 3. Full move number is 21. Black to move.