1n4nr/1bkp3p/rppb1p2/p4P2/2PPp2P/NP2P1P1/P6N/1R1QKBR1 b - - 0 20
FEN state: 1n4nr/1bkp3p/rppb1p2/p4P2/2PPp2P/NP2P1P1/P6N/1R1QKBR1 b - - 0 20 ; Best move: d6a3
The current state of the chess board is: Black knight at b8, black knight at g8 and black rook at h8. Black bishop at b7, black king at c7, black pawn at d7 and black pawn at h7. Black rook at a6, black pawn at b6, black pawn at c6, black bishop at d6 and black pawn at f6. Black pawn at a5 and white pawn at f5. White pawn at c4, white pawn at d4, black pawn at e4 and white pawn at h4. White knight at a3, white pawn at b3, white pawn at e3 and white pawn at g3. White pawn at a2 and white knight at h2. White rook at b1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.