To sac or not ? Part 6

Jun 25, 2016, 3:18 PM |

White to move. Would you sac here or not ?

Here's the full game with annotations :
Now let's compare this with a rather well know position from the Philidor defense (If I got the move order and position right), where the bishop sac on f7 is wrong :
The difference is that black played g7g6 and Bg7, making the Bxf7+ sacrifice more attractive for white.