r1bnk2r/p6p/2np4/2N1p1b1/1p1P1pq1/1PP1PP1N/P3B3/1RBQ1K1R w kq - 2 21
FEN state: r1bnk2r/p6p/2np4/2N1p1b1/1p1P1pq1/1PP1PP1N/P3B3/1RBQ1K1R w kq - 2 21 ; Best move: f3g4
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at d8, black king at e8 and black rook at h8. Black pawn at a7 and black pawn at h7. Black knight at c6 and black pawn at d6. White knight at c5, black pawn at e5 and black bishop at g5. Black pawn at b4, white pawn at d4, black pawn at f4 and black queen at g4. White pawn at b3, white pawn at c3, white pawn at e3, white pawn at f3 and white knight at h3. White pawn at a2 and white bishop at e2. White rook at b1, white bishop at c1, white queen at d1, white king at f1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 2. Full move number is 21. White to move.