1rb1k2r/ppppnppp/2n1p3/8/1b2KP1P/PQPP4/1P2PqP1/RNB2BNR w k - 7 10
FEN state: 1rb1k2r/ppppnppp/2n1p3/8/1b2KP1P/PQPP4/1P2PqP1/RNB2BNR w k - 7 10 ; Best move: d3d4
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black knight at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at c6 and black pawn at e6. Black bishop at b4, white king at e4, white pawn at f4 and white pawn at h4. White pawn at a3, white queen at b3, white pawn at c3 and white pawn at d3. White pawn at b2, white pawn at e2, black queen at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 7. Full move number is 10. White to move.