1rb3nr/4p1kp/ppnp4/P1p3p1/q4RpP/4P3/1P1PNP2/RNB2K2 w - - 4 21
FEN state: 1rb3nr/4p1kp/ppnp4/P1p3p1/q4RpP/4P3/1P1PNP2/RNB2K2 w - - 4 21 ; Best move: f4a4
The current state of the chess board is: Black rook at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at e7, black king at g7 and black pawn at h7. Black pawn at a6, black pawn at b6, black knight at c6 and black pawn at d6. White pawn at a5, black pawn at c5 and black pawn at g5. Black queen at a4, white rook at f4, black pawn at g4 and white pawn at h4. White pawn at e3. White pawn at b2, white pawn at d2, white knight at e2 and white pawn at f2. White rook at a1, white knight at b1, white bishop at c1 and white king at f1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. White to move.