r1bk1b1r/3ppnp1/n1p3p1/pp3p2/2BP1q1P/NPP1PP2/P5P1/RNB1K1R1 w Q - 3 15
FEN state: r1bk1b1r/3ppnp1/n1p3p1/pp3p2/2BP1q1P/NPP1PP2/P5P1/RNB1K1R1 w Q - 3 15 ; Best move: e3f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at d7, black pawn at e7, black knight at f7 and black pawn at g7. Black knight at a6, black pawn at c6 and black pawn at g6. Black pawn at a5, black pawn at b5 and black pawn at f5. White bishop at c4, white pawn at d4, black queen at f4 and white pawn at h4. White knight at a3, white pawn at b3, white pawn at c3, white pawn at e3 and white pawn at f3. White pawn at a2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 3. Full move number is 15. White to move.