BLACK WON IN 23 MOVES - TWO KNIGHTS DEFENCE

In the Two Knights Defence, the variation 4 Ng5 is very sharp. White wins a pawn, but Black gets the initiative. The slightest mistake can cost a game for White.

I had black pieces in the game Krasotkin - Nanomaser on the platform ChessOK, 15 minutes per game. The game lasted only 23 moves.

Krasotkin - Nanomaster, ChessOK, 2024

You can analyze the game here:

Some comments on this game

Position after 10...Bd6

After 10...Bd6, 11 Nc4? was a mistake. White lost time to exchange one's centralized knight for Black's knight on the board's edge.

The correct moves were 11 d4 or 11 f4, defending the knight on e5. 

For example, after 11 d4 exd4 12 Nxd3, White's knight is close to White's king, while Black's knight is still on the edge. The disturbing central pawn on e4 has been exchanged. White's queen on d1 and bishop on c1 have gained some space.

The move 13 0-0?? was a final mistake. The correct move was 13 d4, after which White still has a bad position.

After 13 0-0??, Black has a winning combination. 

Position after 13 0-0

This combination is typical. First, Black sacrifices the bishop on h2: 13...Bxh2+. Then, Black plays 14...Ng4+. Then, depending on circumstances, Black plays 15...Qh4, 15...Qg5 or 15...Qd6.

Note that in the diagram above, White's queenside is entirely undeveloped. 

Worse, White's bishop on c4 also does not participate in the battle that will start around White's king. That bishop does not protect the crucial square g4 and, thus, does not deter the threatening move Nf6-g4.

With the move 12 Be2xc4, White's bishop abandoned the square e2 and landed on a seemingly more active position on c4. Unfortunately, the bishop on c4 alone does not threaten the well-defended pawn on f7.

White's position would be bad but much better than in the game if, on the diagram above, White's bishop would be on e2 instead of c4, as shown in the diagram below:

The position from above, if the bishop on c4 is on e2 instead

In the present post, the Apronus chess software was used.