rnbqk3/3pn1p1/p3r3/4p2p/1pPN2pP/bPQ1B3/P3PPR1/R3KB2 w Q - 0 18
FEN state: rnbqk3/3pn1p1/p3r3/4p2p/1pPN2pP/bPQ1B3/P3PPR1/R3KB2 w Q - 0 18 ; Best move: d4e6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8 and black king at e8. Black pawn at d7, black knight at e7 and black pawn at g7. Black pawn at a6 and black rook at e6. Black pawn at e5 and black pawn at h5. Black pawn at b4, white pawn at c4, white knight at d4, black pawn at g4 and white pawn at h4. Black bishop at a3, white pawn at b3, white queen at c3 and white bishop at e3. White pawn at a2, white pawn at e2, white pawn at f2 and white rook at g2. White rook at a1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 18. White to move.