r3kbnr/1p2pppp/2p1b3/p2p4/P1PP1qP1/4PP1P/1QPBN3/RN2KB1R w q - 3 16
FEN state: r3kbnr/1p2pppp/2p1b3/p2p4/P1PP1qP1/4PP1P/1QPBN3/RN2KB1R w q - 3 16 ; Best move: e2f4
The current state of the chess board is: Black rook at a8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at c6 and black bishop at e6. Black pawn at a5 and black pawn at d5. White pawn at a4, white pawn at c4, white pawn at d4, black queen at f4 and white pawn at g4. White pawn at e3, white pawn at f3 and white pawn at h3. White queen at b2, white pawn at c2, white bishop at d2 and white knight at e2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 3. Full move number is 16. White to move.