rnb1qb1r/3kp2p/pp3Q1n/3p1p2/1P6/B1N2P1P/P1P1p1KR/4RBN1 b - - 1 21
FEN state: rnb1qb1r/3kp2p/pp3Q1n/3p1p2/1P6/B1N2P1P/P1P1p1KR/4RBN1 b - - 1 21 ; Best move: e7f6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at e8, black bishop at f8 and black rook at h8. Black king at d7, black pawn at e7 and black pawn at h7. Black pawn at a6, black pawn at b6, white queen at f6 and black knight at h6. Black pawn at d5 and black pawn at f5. White pawn at b4. White bishop at a3, white knight at c3, white pawn at f3 and white pawn at h3. White pawn at a2, white pawn at c2, black pawn at e2, white king at g2 and white rook at h2. White rook at e1, white bishop at f1 and white knight at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.