rn1k1bnr/1p1q1pp1/3p3p/p1p1pb2/1PPPPB2/P2Q2PP/5P2/RN2KBNR w KQ - 1 10
FEN state: rn1k1bnr/1p1q1pp1/3p3p/p1p1pb2/1PPPPB2/P2Q2PP/5P2/RN2KBNR w KQ - 1 10 ; Best move: d4e5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black queen at d7, black pawn at f7 and black pawn at g7. Black pawn at d6 and black pawn at h6. Black pawn at a5, black pawn at c5, black pawn at e5 and black bishop at f5. White pawn at b4, white pawn at c4, white pawn at d4, white pawn at e4 and white bishop at f4. White pawn at a3, white queen at d3, white pawn at g3 and white pawn at h3. White pawn at f2. White rook at a1, white knight at b1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 1. Full move number is 10. White to move.