r4b2/p2kpBpr/1pqp2n1/1bp4p/PPP3n1/2NNP1PP/2QP1P2/R1B1R1K1 w - - 7 21
FEN state: r4b2/p2kpBpr/1pqp2n1/1bp4p/PPP3n1/2NNP1PP/2QP1P2/R1B1R1K1 w - - 7 21 ; Best move: a4b5
The current state of the chess board is: Black rook at a8 and black bishop at f8. Black pawn at a7, black king at d7, black pawn at e7, white bishop at f7, black pawn at g7 and black rook at h7. Black pawn at b6, black queen at c6, black pawn at d6 and black knight at g6. Black bishop at b5, black pawn at c5 and black pawn at h5. White pawn at a4, white pawn at b4, white pawn at c4 and black knight at g4. White knight at c3, white knight at d3, white pawn at e3, white pawn at g3 and white pawn at h3. White queen at c2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1, white rook at e1 and white king at g1. Both players have exhausted their castles. Half move number is 7. Full move number is 21. White to move.