rn3b1r/p2kppp1/P4n1p/1ppb4/5PPP/R1P1PN2/B1PP4/1NBKR3 b - - 1 21
FEN state: rn3b1r/p2kppp1/P4n1p/1ppb4/5PPP/R1P1PN2/B1PP4/1NBKR3 b - - 1 21 ; Best move: d5f3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black rook at h8. Black pawn at a7, black king at d7, black pawn at e7, black pawn at f7 and black pawn at g7. White pawn at a6, black knight at f6 and black pawn at h6. Black pawn at b5, black pawn at c5 and black bishop at d5. White pawn at f4, white pawn at g4 and white pawn at h4. White rook at a3, white pawn at c3, white pawn at e3 and white knight at f3. White bishop at a2, white pawn at c2 and white pawn at d2. White knight at b1, white bishop at c1, white king at d1 and white rook at e1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.