r1bq1k2/ppppn2r/4p1pp/3P1p1P/2P2Pn1/BP1BP3/P7/R2QbKNR w - - 2 21
FEN state: r1bq1k2/ppppn2r/4p1pp/3P1p1P/2P2Pn1/BP1BP3/P7/R2QbKNR w - - 2 21 ; Best move: f1e1
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black king at f8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black knight at e7 and black rook at h7. Black pawn at e6, black pawn at g6 and black pawn at h6. White pawn at d5, black pawn at f5 and white pawn at h5. White pawn at c4, white pawn at f4 and black knight at g4. White bishop at a3, white pawn at b3, white bishop at d3 and white pawn at e3. White pawn at a2. White rook at a1, white queen at d1, black bishop at e1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. White to move.