r1b2b2/q3pk2/3p2pn/pp2nPr1/7N/PPN1P1PK/R1PP3P/2BQ3R w - - 4 21
FEN state: r1b2b2/q3pk2/3p2pn/pp2nPr1/7N/PPN1P1PK/R1PP3P/2BQ3R w - - 4 21 ; Best move: e3e4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black bishop at f8. Black queen at a7, black pawn at e7 and black king at f7. Black pawn at d6, black pawn at g6 and black knight at h6. Black pawn at a5, black pawn at b5, black knight at e5, white pawn at f5 and black rook at g5. White knight at h4. White pawn at a3, white pawn at b3, white knight at c3, white pawn at e3, white pawn at g3 and white king at h3. White rook at a2, white pawn at c2, white pawn at d2 and white pawn at h2. White bishop at c1, white queen at d1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. White to move.