rB2kbnr/2p3pp/4bp2/1p1pp3/P2N2n1/qPPP1P1P/4P1P1/R2QKBR1 w Q - 1 15
FEN state: rB2kbnr/2p3pp/4bp2/1p1pp3/P2N2n1/qPPP1P1P/4P1P1/R2QKBR1 w Q - 1 15 ; Best move: a1a3
The current state of the chess board is: Black rook at a8, white bishop at b8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at c7, black pawn at g7 and black pawn at h7. Black bishop at e6 and black pawn at f6. Black pawn at b5, black pawn at d5 and black pawn at e5. White pawn at a4, white knight at d4 and black knight at g4. Black queen at a3, white pawn at b3, white pawn at c3, white pawn at d3, white pawn at f3 and white pawn at h3. White pawn at e2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 15. White to move.