rnbk3r/1p2pp1p/3p3n/p1p4N/Qq4p1/1NPP1P2/PP2P1P1/R1B1KB1R b Q - 6 16
FEN state: rnbk3r/1p2pp1p/3p3n/p1p4N/Qq4p1/1NPP1P2/PP2P1P1/R1B1KB1R b Q - 6 16 ; Best move: b4a4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at d8 and black rook at h8. Black pawn at b7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at d6 and black knight at h6. Black pawn at a5, black pawn at c5 and white knight at h5. White queen at a4, black queen at b4 and black pawn at g4. White knight at b3, white pawn at c3, white pawn at d3 and white pawn at f3. White pawn at a2, white pawn at b2, white pawn at e2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White queenside is the only castle move available. Half move number is 6. Full move number is 16. Black to move.