1nb1kb1r/1p3p1p/1qpp4/2Pnp1p1/3PP3/8/rP2QPPP/RNB2KNR w k - 0 15
FEN state: 1nb1kb1r/1p3p1p/1qpp4/2Pnp1p1/3PP3/8/rP2QPPP/RNB2KNR w k - 0 15 ; Best move: a1a2
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at b7, black pawn at f7 and black pawn at h7. Black queen at b6, black pawn at c6 and black pawn at d6. White pawn at c5, black knight at d5, black pawn at e5 and black pawn at g5. White pawn at d4 and white pawn at e4. Black rook at a2, white pawn at b2, white queen at e2, white pawn at f2, white pawn at g2 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 kingside is the only castle move available. Half move number is 0. Full move number is 15. White to move.