rn3bnr/ppp2p1p/P2kp1p1/3p1bq1/5P2/1PPPB3/4PKPP/RNQ2BNR w - - 5 13
FEN state: rn3bnr/ppp2p1p/P2kp1p1/3p1bq1/5P2/1PPPB3/4PKPP/RNQ2BNR w - - 5 13 ; Best move: a6b7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at f7 and black pawn at h7. White pawn at a6, black king at d6, black pawn at e6 and black pawn at g6. Black pawn at d5, black bishop at f5 and black queen at g5. White pawn at f4. White pawn at b3, white pawn at c3, white pawn at d3 and white bishop at e3. White pawn at e2, white king at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at c1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 5. Full move number is 13. White to move.