rn2kb1r/1bpp1p1p/4pnN1/p5p1/Pp3q2/2N1P1P1/1PPP1P1P/1RBQKB1R b Kkq - 4 10
FEN state: rn2kb1r/1bpp1p1p/4pnN1/p5p1/Pp3q2/2N1P1P1/1PPP1P1P/1RBQKB1R b Kkq - 4 10 ; Best move: f4f3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black bishop at b7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black pawn at e6, black knight at f6 and white knight at g6. Black pawn at a5 and black pawn at g5. White pawn at a4, black pawn at b4 and black queen at f4. White knight at c3, white pawn at e3 and white pawn at g3. White pawn at b2, white pawn at c2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 4. Full move number is 10. Black to move.