r1b1k1nr/p3pq1p/npN4b/3p1pp1/8/P1P1Q2P/1P3PP1/RNB1KB1R w KQkq - 1 15
FEN state: r1b1k1nr/p3pq1p/npN4b/3p1pp1/8/P1P1Q2P/1P3PP1/RNB1KB1R w KQkq - 1 15 ; Best move: f1b5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at e7, black queen at f7 and black pawn at h7. Black knight at a6, black pawn at b6, white knight at c6 and black bishop at h6. Black pawn at d5, black pawn at f5 and black pawn at g5. White pawn at a3, white pawn at c3, white queen at e3 and white pawn at h3. White pawn at b2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 15. White to move.