r1bq1bn1/pp1ppk1r/n4p2/1Np3pp/2PP4/1P2B3/P2QPPPP/R3KBNR w KQ - 10 10
FEN state: r1bq1bn1/pp1ppk1r/n4p2/1Np3pp/2PP4/1P2B3/P2QPPPP/R3KBNR w KQ - 10 10 ; Best move: d4c5
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at e7, black king at f7 and black rook at h7. Black knight at a6 and black pawn at f6. White knight at b5, black pawn at c5, black pawn at g5 and black pawn at h5. White pawn at c4 and white pawn at d4. White pawn at b3 and white bishop at e3. White pawn at a2, white queen at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, 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 10. Full move number is 10. White to move.