1nbqk1r1/rppp1pp1/4N2p/p1n1p3/1Q6/2N1PP2/P1PP1KPP/R4B1R b - - 2 13
FEN state: 1nbqk1r1/rppp1pp1/4N2p/p1n1p3/1Q6/2N1PP2/P1PP1KPP/R4B1R b - - 2 13 ; Best move: a5b4
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black rook at g8. Black rook at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at g7. White knight at e6 and black pawn at h6. Black pawn at a5, black knight at c5 and black pawn at e5. White queen at b4. White knight at c3, white pawn at e3 and white pawn at f3. White pawn at a2, white pawn at c2, white pawn at d2, white king at f2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 13. Black to move.