1r1q1k2/1bp3br/1p3p1n/1N1pP2p/PpBnP1pP/2P3P1/2Q2P2/R1B2KNR w - - 0 23
FEN state: 1r1q1k2/1bp3br/1p3p1n/1N1pP2p/PpBnP1pP/2P3P1/2Q2P2/R1B2KNR w - - 0 23 ; Best move: b5d4
The current state of the chess board is: Black rook at b8, black queen at d8 and black king at f8. Black bishop at b7, black pawn at c7, black bishop at g7 and black rook at h7. Black pawn at b6, black pawn at f6 and black knight at h6. White knight at b5, black pawn at d5, white pawn at e5 and black pawn at h5. White pawn at a4, black pawn at b4, white bishop at c4, black knight at d4, white pawn at e4, black pawn at g4 and white pawn at h4. White pawn at c3 and white pawn at g3. White queen at c2 and white pawn at f2. White rook at a1, white bishop at c1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. White to move.