Check out puzzle number six ... according to the site, white should play 1.Nxf6 because if black plays 1...Bxf6 white can play ... 2.Qxh7+ with mate waiting in the next move
However, they are assuming that black will simply play that very poor move, when in fact black has a winning move !!!
Thus they are advocating to play a bad move! This is often seen by weaker players, setting a trap and expecting your opponent to be able to do naught but fall for it. When in fact it is easily avoidable, and might even lose the game, if the opponent knows what to do!
Who sees the winning move for black after 1. Nxf6?
21 ( +1 | -1 ) easy ...Nxf6 , Qxf6 , Rxf6 , Bxf6 , Qxf7 , Bg7 , and black stays alive ... but hardly is black winning .. hes down two pawns and with the mobility of the queen will probably soon lose more .....
29 ( +1 | -1 ) for puzzle type questions ...yes i can usually handle most puzzles in my head , however it is often alot easier to do them on a board .. i tend to use puzzles for tactics practice but also for visualizing in my head , it helps to do puzzles this way .. as you eventually get better at seeing and planning your own games in your head
44 ( +1 | -1 ) AfterNxf6 Qxf6 Rxf6 Bxf6 Qxf7 Bg7 white will win easily, for example: Rxg7 Rxg7 Qf8+ Rg8 Qf6+ Rg7 Qxe5 followed by Qd6 and e4-e5. It is customary for problems to give solutions like this since Nxf6 Qxf6 Rxf6 is clearly winning, but on Nxf6 Bxf6 white needs to see Qxh7+! to win. They are not assuming that Black will play the worst move, simply giving the most obvious move as a line.
17 ( +1 | -1 ) aznmonster ..if black plays h6 in response to Nxf6 , white will not take the rook .. but take the h6 pawn with his queen for mate in two . (RxR with assistance from the knight )
15 ( +1 | -1 ) ignore my ...post .. its midnight and i am too tired to think .. im a dork .. i forgot about the knight on e7 .. geez my brain is fried .. too much chess today ( OTB tourney )
30 ( +1 | -1 ) javelinThe title of the page is "Combinations for material." Out of the three possible moves to be made after Nxf6, Bxf6 is the one that doesn't lose material immediately :P I agree with you, it's not a good move they advocate, but there aren't good moves left to be made in that position :P