1nb1kbnr/rp6/2p5/p4pPp/P1pPp1PP/NP2Pq2/2R2NB1/2BQK2R w k - 0 20
FEN state: 1nb1kbnr/rp6/2p5/p4pPp/P1pPp1PP/NP2Pq2/2R2NB1/2BQK2R w k - 0 20 ; Best move: g2f3
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black rook at a7 and black pawn at b7. Black pawn at c6. Black pawn at a5, black pawn at f5, white pawn at g5 and black pawn at h5. White pawn at a4, black pawn at c4, white pawn at d4, black pawn at e4, white pawn at g4 and white pawn at h4. White knight at a3, white pawn at b3, white pawn at e3 and black queen at f3. White rook at c2, white knight at f2 and white bishop at g2. White bishop at c1, white queen at d1, white king at e1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 20. White to move.