Combination, 14-ply deep ?

I love it when players with the white pieces INSIST they are the aggressor.  Below is a combination, about 14-ply deep?  Hardly.

A simple tactic.  Nothing fancy.  Then my opponent abandoned this Game in 15/5.

I was steering for a level endgame.  The tactic simply fell into my lap.  I didn't even see it coming until the last couple moves, when white has a back rank weakness.

I was just exchanging pieces, in order to simplify the position.

Indeed, I much prefer endgames, as opposed to these crazy middlegames.  

25) QxBc4, Rd1+  26) Qf1, RxQf1+  27) KxRf1 looks forced.  And Black is up two pieces.

Or earlier, 21) RxNe4? still loses the exchange to RxRe4  22) BxBg7,  R4-e2.

And both 21) BxNe4 and 21) BxBg7 will also lose material, either from various pins or because of white's bank rank weakness.

On balance, White's 20) Ne4?! only looked aggressive.  It wasn't.

Give me a game (not this game) where opposing Queens and Knights get exchanged off, making my life on the royal chess board much simpler.  Then, I'm in Endgame Heaven.  

P.S. All of the tactics in the game above can be learned quickly, from--

Paul Littlewood, Chess Tactics, (1984).  Only 150 pages of bite-sized exercises, and a wonderful introductory book on Tactics.  Enjoy.

Looks like white's mistake was 21. Rxe4.  He seems OK after 21. Bxe4.

You might like to look at that again, makes no real difference from my analysis.

The damage was done earlier, culminating in  White's 20.Ne4.