1n1k2nr/rbq3pp/2p1Pp2/1pb2PP1/2Np4/PP5N/2PBPKBP/R1Q1R3 b - - 2 20
FEN state: 1n1k2nr/rbq3pp/2p1Pp2/1pb2PP1/2Np4/PP5N/2PBPKBP/R1Q1R3 b - - 2 20 ; Best move: b5c4
The current state of the chess board is: Black knight at b8, black king at d8, black knight at g8 and black rook at h8. Black rook at a7, black bishop at b7, black queen at c7, black pawn at g7 and black pawn at h7. Black pawn at c6, white pawn at e6 and black pawn at f6. Black pawn at b5, black bishop at c5, white pawn at f5 and white pawn at g5. White knight at c4 and black pawn at d4. White pawn at a3, white pawn at b3 and white knight at h3. White pawn at c2, white bishop at d2, white pawn at e2, white king at f2, white bishop at g2 and white pawn at h2. White rook at a1, white queen at c1 and white rook at e1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. Black to move.