r1b1k2r/1pp1b1p1/p1q5/4pp2/PN2nPnp/RPPPB1PP/1Q2P3/1N2KBR1 b - - 1 21
FEN state: r1b1k2r/1pp1b1p1/p1q5/4pp2/PN2nPnp/RPPPB1PP/1Q2P3/1N2KBR1 b - - 1 21 ; Best move: e7b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at b7, black pawn at c7, black bishop at e7 and black pawn at g7. Black pawn at a6 and black queen at c6. Black pawn at e5 and black pawn at f5. White pawn at a4, white knight at b4, black knight at e4, white pawn at f4, black knight at g4 and black pawn at h4. White rook at a3, white pawn at b3, white pawn at c3, white pawn at d3, white bishop at e3, white pawn at g3 and white pawn at h3. White queen at b2 and white pawn at e2. White knight at b1, white king at e1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.