r1n1qk1r/3n1Bb1/1p2p2p/p1p1p3/4P1P1/P1PP1N1P/bPQ2P2/R1B1K1R1 b - - 4 21
FEN state: r1n1qk1r/3n1Bb1/1p2p2p/p1p1p3/4P1P1/P1PP1N1P/bPQ2P2/R1B1K1R1 b - - 4 21 ; Best move: e8f7
The current state of the chess board is: Black rook at a8, black knight at c8, black queen at e8, black king at f8 and black rook at h8. Black knight at d7, white bishop at f7 and black bishop at g7. Black pawn at b6, black pawn at e6 and black pawn at h6. Black pawn at a5, black pawn at c5 and black pawn at e5. White pawn at e4 and white pawn at g4. White pawn at a3, white pawn at c3, white pawn at d3, white knight at f3 and white pawn at h3. Black bishop at a2, white pawn at b2, white queen at c2 and white pawn at f2. White rook at a1, white bishop at c1, white king at e1 and white rook at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.