4kb1r/3bp1p1/B6p/p1p1qp1n/1r1p1QPP/1NB5/Pn1P1PK1/RN5R w k - 0 23
FEN state: 4kb1r/3bp1p1/B6p/p1p1qp1n/1r1p1QPP/1NB5/Pn1P1PK1/RN5R w k - 0 23 ; Best move: f4e5
The current state of the chess board is: Black king at e8, black bishop at f8 and black rook at h8. Black bishop at d7, black pawn at e7 and black pawn at g7. White bishop at a6 and black pawn at h6. Black pawn at a5, black pawn at c5, black queen at e5, black pawn at f5 and black knight at h5. Black rook at b4, black pawn at d4, white queen at f4, white pawn at g4 and white pawn at h4. White knight at b3 and white bishop at c3. White pawn at a2, black knight at b2, white pawn at d2, white pawn at f2 and white king at g2. White rook at a1, white knight at b1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 23. White to move.