r1b2bnr/1p1kpppp/n4q2/p1pP4/P1p3P1/2P1PP2/1P2N2P/R1BQKBR1 w Q - 1 13
FEN state: r1b2bnr/1p1kpppp/n4q2/p1pP4/P1p3P1/2P1PP2/1P2N2P/R1BQKBR1 w Q - 1 13 ; Best move: e2f4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black king at d7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at a6 and black queen at f6. Black pawn at a5, black pawn at c5 and white pawn at d5. White pawn at a4, black pawn at c4 and white pawn at g4. White pawn at c3, white pawn at e3 and white pawn at f3. White pawn at b2, white knight at e2 and white pawn at h2. White rook at a1, white bishop at c1, 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 13. White to move.