1r1q1k1r/3pp2p/np3n1b/p1p2pp1/P1N1bP2/BPPPK2P/4N1P1/RQ3B1R w - - 4 23
FEN state: 1r1q1k1r/3pp2p/np3n1b/p1p2pp1/P1N1bP2/BPPPK2P/4N1P1/RQ3B1R w - - 4 23 ; Best move: d3e4
The current state of the chess board is: Black rook at b8, black queen at d8, black king at f8 and black rook at h8. Black pawn at d7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at b6, black knight at f6 and black bishop at h6. Black pawn at a5, black pawn at c5, black pawn at f5 and black pawn at g5. White pawn at a4, white knight at c4, black bishop at e4 and white pawn at f4. White bishop at a3, white pawn at b3, white pawn at c3, white pawn at d3, white king at e3 and white pawn at h3. White knight at e2 and white pawn at g2. White rook at a1, white queen at b1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 23. White to move.