Disciplined Offensive Game Strategy
After badly weathering an incredible storm of offense I repeatedly missed my guess but managed to strike back with a stunning checkmate. The two lessons that I want are impress from this win are: Never Quit On A Checkmate and Any Piece is Worth Sacrificing.
Flip the board below to see this game from my point of view.
My opponent, playing as White, used a very active offensive approach. After 20 moves, this gradually eroded most of my reliable defense as Black. My main offensive pushes were also dead on arrival! Eventually, when a risky avenue to checkmate opened up, I nearly missed it completely.
This match is located in the game archive to review in whole in Game Explorer.
After 27 moves of stifling, continuous offense White decided to pull a Queenside Castle.

This Queenside Castle placed White's King in an advantageous defensive position. After some initial success at making inroads I would struggle to find the key into this fortress in forward based attacks. All of these attempts were dead ends.

Now, White's fortress has become formidable enough to withstand any forward attack. I will not assume that my opponent's defenses are invincible. So, I must find another point of attack. When faced with an impenetrable current shape of his defense it is worth exploring several attacks to move away White's defenses and slow his offense. However, nothing was immediately effective.
Even the most creative attempts at gaining offensive traction have all failed by move 33. Bad news, right? White's Queen has ignored the Black Knight and now is focusing on checking my King at g7. This will also take my Queen by forking the King and Queen. By move 37 my options seem limited to continuing to guard, as I have done 90% of this game, or - I can take another shot at winning this difficult match. Remember: Any Piece is Worth Sacrificing.
By pushing the pawn up with move 38 I had hoped check and move away the deep White Rook at g2. This failed. Then, I made a mistake by throwing the Knight away to move off White's Queen. This also failed. Notice that at the end of this series my Black King is extremely constrained. However, by allowing my pawn and Knight in so closely to White's King is also very constrained. Although White has an easy checkmate at this point he decides that he wants to punish me by taking my Queen instead. This was a fatal mistake. She was big juicy bait and fully worth sacrificing. Can see you a possible checkmate for Black now?
The entire match was a search for the smallest opening for offense. I had to accept losing my Queen or face the possibility of a humiliatingly brutal checkmate in order to defeat this player. By continuous maneuvering for an opening I was able to find only one serious error in the entire game.