rnb4r/1ppkqppp/p2p1n2/1N2p3/1b6/1QP1P2N/PP1P1PPP/1RB1KBR1 b - - 4 8
FEN state: rnb4r/1ppkqppp/p2p1n2/1N2p3/1b6/1QP1P2N/PP1P1PPP/1RB1KBR1 b - - 4 8 ; Best move: b4c5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at h8. Black pawn at b7, black pawn at c7, black king at d7, black queen at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black pawn at d6 and black knight at f6. White knight at b5 and black pawn at e5. Black bishop at b4. White queen at b3, white pawn at c3, white pawn at e3 and white knight at h3. White pawn at a2, white pawn at b2, white pawn at d2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 8. Black to move.