r1b1k2r/p1p2p1p/3pp3/2n3N1/2P2PP1/R7/Pq1PP2P/R1B1KB2 b kq - 1 21
FEN state: r1b1k2r/p1p2p1p/3pp3/2n3N1/2P2PP1/R7/Pq1PP2P/R1B1KB2 b kq - 1 21 ; Best move: b2a1
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at f7 and black pawn at h7. Black pawn at d6 and black pawn at e6. Black knight at c5 and white knight at g5. White pawn at c4, white pawn at f4 and white pawn at g4. White rook at a3. White pawn at a2, black queen at b2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white bishop at f1. Black kingside and black queenside castles are available. Half move number is 1. Full move number is 21. Black to move.