r2q4/pbp1n1rk/1p2p2b/1N1pBp2/PP1PNPPp/5B1P/2PKP3/R2QR3 w - - 4 23
FEN state: r2q4/pbp1n1rk/1p2p2b/1N1pBp2/PP1PNPPp/5B1P/2PKP3/R2QR3 w - - 4 23 ; Best move: e4f6
The current state of the chess board is: Black rook at a8 and black queen at d8. Black pawn at a7, black bishop at b7, black pawn at c7, black knight at e7, black rook at g7 and black king at h7. Black pawn at b6, black pawn at e6 and black bishop at h6. White knight at b5, black pawn at d5, white bishop at e5 and black pawn at f5. White pawn at a4, white pawn at b4, white pawn at d4, white knight at e4, white pawn at f4, white pawn at g4 and black pawn at h4. White bishop at f3 and white pawn at h3. White pawn at c2, white king at d2 and white pawn at e2. White rook at a1, white queen at d1 and white rook at e1. Both players have exhausted their castles. Half move number is 4. Full move number is 23. White to move.