1rb1kb1r/p1pp1p1p/np6/1B2q1pQ/2NPPpn1/2P2K2/P5PP/R1B3NR w k - 2 13
FEN state: 1rb1kb1r/p1pp1p1p/np6/1B2q1pQ/2NPPpn1/2P2K2/P5PP/R1B3NR w k - 2 13 ; Best move: c4e5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black knight at a6 and black pawn at b6. White bishop at b5, black queen at e5, black pawn at g5 and white queen at h5. White knight at c4, white pawn at d4, white pawn at e4, black pawn at f4 and black knight at g4. White pawn at c3 and white king at f3. White pawn at a2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 2. Full move number is 13. White to move.