r1bq3r/1pppk1bp/2n4n/p3p1p1/2PP4/N4Pp1/PP1KP2P/1RB1QBNR w - - 0 13
FEN state: r1bq3r/1pppk1bp/2n4n/p3p1p1/2PP4/N4Pp1/PP1KP2P/1RB1QBNR w - - 0 13 ; Best move: d4d5
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 b7, black pawn at c7, black pawn at d7, black king at e7, black bishop at g7 and black pawn at h7. Black knight at c6 and black knight at h6. Black pawn at a5, black pawn at e5 and black pawn at g5. White pawn at c4 and white pawn at d4. White knight at a3, white pawn at f3 and black pawn at g3. White pawn at a2, white pawn at b2, white king at d2, white pawn at e2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at e1, 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.