r4bnr/qp1bkp2/p1p5/4p1pP/2P1PQ1P/P1n4N/1P1N1PB1/1RB2K1R b - - 4 17
FEN state: r4bnr/qp1bkp2/p1p5/4p1pP/2P1PQ1P/P1n4N/1P1N1PB1/1RB2K1R b - - 4 17 ; Best move: g5f4
The current state of the chess board is: Black rook at a8, black bishop at f8, black knight at g8 and black rook at h8. Black queen at a7, black pawn at b7, black bishop at d7, black king at e7 and black pawn at f7. Black pawn at a6 and black pawn at c6. Black pawn at e5, black pawn at g5 and white pawn at h5. White pawn at c4, white pawn at e4, white queen at f4 and white pawn at h4. White pawn at a3, black knight at c3 and white knight at h3. White pawn at b2, white knight at d2, white pawn at f2 and white bishop at g2. White rook at b1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 17. Black to move.