1rbq4/p1pkn3/2n3pr/P3pp1p/R5PP/1pPpNP1R/1P1KP3/1NB1QB2 b - - 2 21
FEN state: 1rbq4/p1pkn3/2n3pr/P3pp1p/R5PP/1pPpNP1R/1P1KP3/1NB1QB2 b - - 2 21 ; Best move: d7e8
The current state of the chess board is: Black rook at b8, black bishop at c8 and black queen at d8. Black pawn at a7, black pawn at c7, black king at d7 and black knight at e7. Black knight at c6, black pawn at g6 and black rook at h6. White pawn at a5, black pawn at e5, black pawn at f5 and black pawn at h5. White rook at a4, white pawn at g4 and white pawn at h4. Black pawn at b3, white pawn at c3, black pawn at d3, white knight at e3, white pawn at f3 and white rook at h3. White pawn at b2, white king at d2 and white pawn at e2. White knight at b1, white bishop at c1, white queen at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 21. Black to move.