rn2kb2/p1p1p3/rp1q1p1n/3pP1pb/P7/2P2QPB/1P1P1P1P/RNB2KNR w q - 0 13
FEN state: rn2kb2/p1p1p3/rp1q1p1n/3pP1pb/P7/2P2QPB/1P1P1P1P/RNB2KNR w q - 0 13 ; Best move: f3h5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at c7 and black pawn at e7. Black rook at a6, black pawn at b6, black queen at d6, black pawn at f6 and black knight at h6. Black pawn at d5, white pawn at e5, black pawn at g5 and black bishop at h5. White pawn at a4. White pawn at c3, white queen at f3, white pawn at g3 and white bishop at h3. White pawn at b2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 13. White to move.