r1bqkb2/8/npppp2r/pN3p1n/6Pp/1PPP1N2/P1Q1P1P1/1R1K1BR1 b q - 1 18
FEN state: r1bqkb2/8/npppp2r/pN3p1n/6Pp/1PPP1N2/P1Q1P1P1/1R1K1BR1 b q - 1 18 ; Best move: f5g4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black knight at a6, black pawn at b6, black pawn at c6, black pawn at d6, black pawn at e6 and black rook at h6. Black pawn at a5, white knight at b5, black pawn at f5 and black knight at h5. White pawn at g4 and black pawn at h4. White pawn at b3, white pawn at c3, white pawn at d3 and white knight at f3. White pawn at a2, white queen at c2, white pawn at e2 and white pawn at g2. White rook at b1, white king at d1, white bishop at f1 and white rook at g1. Black queenside is the only castle move available. Half move number is 1. Full move number is 18. Black to move.