rnb1k1nr/1q1p4/1p2p2p/2b2Qp1/P3PPP1/R1p1BK2/1PP4P/6NR w k - 4 18
FEN state: rnb1k1nr/1q1p4/1p2p2p/2b2Qp1/P3PPP1/R1p1BK2/1PP4P/6NR w k - 4 18 ; Best move: f5g6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black queen at b7 and black pawn at d7. Black pawn at b6, black pawn at e6 and black pawn at h6. Black bishop at c5, white queen at f5 and black pawn at g5. White pawn at a4, white pawn at e4, white pawn at f4 and white pawn at g4. White rook at a3, black pawn at c3, white bishop at e3 and white king at f3. White pawn at b2, white pawn at c2 and white pawn at h2. White knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 18. White to move.