r2q1br1/1bk4p/nppp1p2/1B1np1P1/1P1PP1P1/P1P1B2P/4N1KR/RN6 w - - 3 23
FEN state: r2q1br1/1bk4p/nppp1p2/1B1np1P1/1P1PP1P1/P1P1B2P/4N1KR/RN6 w - - 3 23 ; Best move: e4d5
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8 and black rook at g8. Black bishop at b7, black king at c7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at c6, black pawn at d6 and black pawn at f6. White bishop at b5, black knight at d5, black pawn at e5 and white pawn at g5. White pawn at b4, white pawn at d4, white pawn at e4 and white pawn at g4. White pawn at a3, white pawn at c3, white bishop at e3 and white pawn at h3. White knight at e2, white king at g2 and white rook at h2. White rook at a1 and white knight at b1. Both players have exhausted their castles. Half move number is 3. Full move number is 23. White to move.