r1b3nr/4kpp1/pp2pq1p/nQ1p3B/P3P2P/b1P3P1/1P1P4/RNB1K1NR w KQ - 2 18
FEN state: r1b3nr/4kpp1/pp2pq1p/nQ1p3B/P3P2P/b1P3P1/1P1P4/RNB1K1NR w KQ - 2 18 ; Best move: b5b6
The current state of the chess board is: Black rook at a8, black bishop at c8, black knight at g8 and black rook at h8. Black king at e7, black pawn at f7 and black pawn at g7. Black pawn at a6, black pawn at b6, black pawn at e6, black queen at f6 and black pawn at h6. Black knight at a5, white queen at b5, black pawn at d5 and white bishop at h5. White pawn at a4, white pawn at e4 and white pawn at h4. Black bishop at a3, white pawn at c3 and white pawn at g3. White pawn at b2 and white pawn at d2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 2. Full move number is 18. White to move.