r1bq3r/ppppk1pp/n3p3/n4p2/1P1b1P2/P3P1PP/2PK4/RNBQ1BNR w - - 0 13
FEN state: r1bq3r/ppppk1pp/n3p3/n4p2/1P1b1P2/P3P1PP/2PK4/RNBQ1BNR w - - 0 13 ; Best move: e3d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black king at e7, black pawn at g7 and black pawn at h7. Black knight at a6 and black pawn at e6. Black knight at a5 and black pawn at f5. White pawn at b4, black bishop at d4 and white pawn at f4. White pawn at a3, white pawn at e3, white pawn at g3 and white pawn at h3. White pawn at c2 and white king at d2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 13. White to move.