rnb1r3/R2pkn1p/3b2p1/B1p1pp2/P1P4P/3q2PR/PQ1NPP2/4KB2 b - - 5 21
FEN state: rnb1r3/R2pkn1p/3b2p1/B1p1pp2/P1P4P/3q2PR/PQ1NPP2/4KB2 b - - 5 21 ; Best move: a8a7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at e8. White rook at a7, black pawn at d7, black king at e7, black knight at f7 and black pawn at h7. Black bishop at d6 and black pawn at g6. White bishop at a5, black pawn at c5, black pawn at e5 and black pawn at f5. White pawn at a4, white pawn at c4 and white pawn at h4. Black queen at d3, white pawn at g3 and white rook at h3. White pawn at a2, white queen at b2, white knight at d2, white pawn at e2 and white pawn at f2. White king at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 5. Full move number is 21. Black to move.