Failing to see winning moves

Two lines of thought motivate this thread:

1. Have you an example of a game in which you or your opponent failed to see a winning move? (I know, all games may be like this, but I'm interested in the more remarkable ones, like failing to see a forced mate or major piece capture combination.)
2. Have you an example of a game in which you made a move knowing that your opponent COULD respond with a great move, but you made the move anyway, betting that your opponent wouldn't see it? Did it work out that way?

Game 7340791
At move 34 I have mate in 3
Instead I decide to throw away a rook
Which my opponent declines
Good chess!

Can't help with the other,I only have a few piece sacs where I gamble my opponent won't be able to defend proper,but that's not quite what you're looking for.

toet.

Here is one of my howlers. White to move. Black has just taken the Rook on e5.



After setting up this nice position, I make a move using my phone. Guess what move I made as White?

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