rnb2k1r/Npqp3p/2p1pbp1/p3n1p1/P1PP4/R1K2PPP/1P2P3/5BNR w - - 1 21
FEN state: rnb2k1r/Npqp3p/2p1pbp1/p3n1p1/P1PP4/R1K2PPP/1P2P3/5BNR w - - 1 21 ; Best move: a7c8
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8 and black rook at h8. White knight at a7, black pawn at b7, black queen at c7, black pawn at d7 and black pawn at h7. Black pawn at c6, black pawn at e6, black bishop at f6 and black pawn at g6. Black pawn at a5, black knight at e5 and black pawn at g5. White pawn at a4, white pawn at c4 and white pawn at d4. White rook at a3, white king at c3, white pawn at f3, white pawn at g3 and white pawn at h3. White pawn at b2 and white pawn at e2. White bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. White to move.