rnb4r/qp1pkpb1/7p/4p1p1/1p2P3/2PP2PB/R2N2QP/4K1NR w - - 0 21
FEN state: rnb4r/qp1pkpb1/7p/4p1p1/1p2P3/2PP2PB/R2N2QP/4K1NR w - - 0 21 ; Best move: a2a7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at h8. Black queen at a7, black pawn at b7, black pawn at d7, black king at e7, black pawn at f7 and black bishop at g7. Black pawn at h6. Black pawn at e5 and black pawn at g5. Black pawn at b4 and white pawn at e4. White pawn at c3, white pawn at d3, white pawn at g3 and white bishop at h3. White rook at a2, white knight at d2, white queen at g2 and white pawn at h2. White king at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. White to move.