Pos2I run some of my online blitz games through Fritz, using “Blundercheck” mode.
It finds not blunders, but also any missing tactics, actually anything that’s worse
than Fritz’s preferable move by 0.75 pawn ( of course you can change that range).
Here is the combination, that I didn’t see, the position is from Caro-Kann defense,
fantasy variation that was suggested by GM Bareev in his lecture.
Pic 2
White to move, computer suggests Bh6. OK, but why the reply is Rf8?
Strange, right? What if, let’s say, Nc6? Fritz says – Rxf7!
Pic 3
If Kxf7, then Rf1+, Kg8, Qxe6+ and Bg7#.
So, after Rf1+, Black has to give up on f6 first his bishop, then his queen,
leaving Black with 2R+N vs. Q+B+N+P and score 7.45.
The second example is easier, I hope you find the solution ( just in case it’s in the comment).

I run some of my online blitz games through Fritz using “Blundercheck” mode.  It finds not only blunders, but also any missing tactics,  actually anything at all that’s worse than Fritz’s preferable move by 0.75 pawn ( of course you can change that range).

Here is the combination that I didn’t see.  I am White, the position is from Caro-Kann defense, fantasy variation that was suggested by GM Bareev in his lecture – 1.e4 c6 2. d4 d5 3. f3.

Pos2

White to move, computer suggests Bh6.  OK, but why the reply is Rf8? Strange, right? What if black plays,  let’s say,  Nc6?  Fritz says – Rxf7!

Pos3

If Kxf7, then Rf1+  Kg8, Qxe6+

Pos4

Kh8, Bg7#.

So, after Rf1+ Black has to give up on f6 first his bishop, then his queen, leaving Black with 2R+N vs. Q+B+N+P and score 7.45.

The second example is easier,  White to move and win material, just in case the solution is in the comment.

Pos1

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