r1b2br1/p2k4/n1p1p1pn/3p2B1/P2PPq2/2P3PP/1P2NP2/R2K1R2 w - - 2 20
FEN state: r1b2br1/p2k4/n1p1p1pn/3p2B1/P2PPq2/2P3PP/1P2NP2/R2K1R2 w - - 2 20 ; Best move: e2f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8 and black rook at g8. Black pawn at a7 and black king at d7. Black knight at a6, black pawn at c6, black pawn at e6, black pawn at g6 and black knight at h6. Black pawn at d5 and white bishop at g5. White pawn at a4, white pawn at d4, white pawn at e4 and black queen at f4. White pawn at c3, white pawn at g3 and white pawn at h3. White pawn at b2, white knight at e2 and white pawn at f2. White rook at a1, white king at d1 and white rook at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. White to move.