1rb2k1r/p7/n1pbpn2/1p5p/2NPPPB1/P1P3P1/1B5P/R5KR w - - 2 23
FEN state: 1rb2k1r/p7/n1pbpn2/1p5p/2NPPPB1/P1P3P1/1B5P/R5KR w - - 2 23 ; Best move: c4d6
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at a7. Black knight at a6, black pawn at c6, black bishop at d6, black pawn at e6 and black knight at f6. Black pawn at b5 and black pawn at h5. White knight at c4, white pawn at d4, white pawn at e4, white pawn at f4 and white bishop at g4. White pawn at a3, white pawn at c3 and white pawn at g3. White bishop at b2 and white pawn at h2. White rook at a1, white king at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 23. White to move.