Nakamura just beat Carlsen

Off topic, no? 

Agreed, pretty equal opening, but he is saving his opening preparation for the world championships. 

Obviously

No. 

One swallow does not a summer make.

+2 Classic

In fact, there is a movie in which I played a simul against the top 10 GM and I won:

https://www.chess.com/forum/view/fun-with-chess/new-chess-movie-pawn-pusher---see-snapshots

Bilbao chess masters 2016
Carlsen - Nakamura
0 - 1
..
-

An amateur (me) looks at the game :
( from Magnus Carlsen point of view .).
Me and others will learn from the gifted of you
telling me why my suggestions will (not) work,
in real GM play ...
( :- )

Move 6. - why not Nd5 for white ?
( an offensive and decisive move ..).
If black e6 then Nf4, and c3 from white next ?
( depending, a bit, on blacks move, of course )

Move 17. - Go a bit kamikaze, now.  Bxf6 !
( Knights are magic. Try to keep one ..
and take out your  opponents .. )
White Knight to b6 could push the game forward,
threatens a-Rook, and Nd7 next . ( ? )
( if black Nxd7, then Bxg7, kamikaze attack .)..

Move 23. - Nc5 and Ba3 in some order, Nd7 next ?
( why not )

Move 28. - Too late for kamikaze. What now ?
( Qh4 !?! )

Move 30. - Qc3+ ( on the move )

Move 31. - Rook to c, b or a1 seems better than attack here .
( - for me, the NB (NoBody) amateur .. )

Move 34. - Why not Nb7, or Qf6 for white.
( black Queen can do very little on her own )
- if black Qg4+ , then Kf1 retreat, and then white N(x)a6 next ?

Move 47. - Magnus more desperate now. He knows chess .
( Qxf5 !? )

Move 49. - going for a repeat that does not work .?.
( resignation )

Move 50. - white: Kh3 and black Qd6 .
( congrats Naka )

..
-

- Be well, All .
& Play for fun and learning

;- )

now i can die in peace

Not sure how serious you are but I don't think that's an accurate assessment at all. Carlsen is known for playing openings that appear slow. Fianchetto systems can look very slow while actually being extremely active and dangerous. Look at the computer bar on the left, it has white up the whole time. A joke opening would be something like 1. a3. 

maybe Carlsen is trying to hide his preperation from.Karjakin? Try to give Sergey a pretend psychological edge as in "oh, he is on bad form" but in reality Magnus has a surprise up his sleeve.

Immortal ?

The term is rather

Unbeatable

( ? )

- over time

He's not lying!

For each I try to give concrete reason (like a variation) but also the general thought process for why moves that are similar may or may not work in similar types of positions.

---

6.Nd5
In the most general sense, this simply lacks a followup. White doesn't have enough development to coordinate with it.

Concretely speaking though, lets imagine a move like 6...Nf6. If white captures, he has lost time (Nc3-d5-xf6). To be efficient you want to move pieces only once in the opening until you're developed. If white does not capture, then an eventual Nxd5 will force a white pawn to d5 and now the bishop on g2 is unhappy to be staring at its pawn.

Also simply the move 6...e6 forces the knight to retreat immediately.

---

17.Bxf6
For experienced players, pieces aren't hard to keep track of, i.e. knights aren't magical. The value of a piece is how much it can do in the position. A quick way to check this how many squares it's influencing and whether it's centralized.

Notice when trading the bishop for knight, what you're actually arguing is you like your knight vs their bishop better than you like the current position... but your knight is off sides and (this is the most important reason why 17.Bxf6 is bad) the black bishop influences many squares plus white's dark squares are very weak (so many pawns on light square on the kingside).

So 17.Bxf6 is a rather large positional blunder.

You also ask about the line 17.Nb6 (then you pretend white can move again) Nd7. This loses a piece because Nxe7 Bxg7 and black recaptures on g7.

---

23. Nc5
In general, to be offensive, pieces either threaten a weakness (a pawn, a king, etc) or threaten to infiltrate. Nc5 threatens no weakness, and your proposed infiltration Nd7 loses material even if we let white move 3 times in a row like you suggest. E.g. Nc5, Ba3, Nd7 and black can play Nxd7 Bxf8 Nxf8 (winning two pieces for a rook).

Just with general considerations though, Nc5 with Ba3 is a poor maneuver because your knight blocks your bishop. Instead, you want pieces to coordinate together (focusing on a single square, or spreading out their influence to control a group of squares together). Blocking is the worst coordination. I see you wanted to set up a tactic (discovered attack on the rook) but we can dismiss tactical reasons without calculation because we're pretending black makes no moves twice in a row.

---

28.Qh4
This leaves the bishop on b2 undefended while making no threat of its own. In fact the queen's influence (squares it controls) is less on h4. It's also not threatening to build up to anything because h7 is defended twice (defense can increase to 3 if necessary) and g6 and h6 are defended by a pawn and a minor piece (so leading the attack with a queen has no hope of creating a threat in the future).

---

30.Qc3+
This is a good idea in the sense that it controls more squares on c3, good thought. Black has a threat in the position however, he's threatening to play e5 and white's kingside collapses and his king will have no cover. After 30.Qc3+ Kg8 it's white to move again, and the threat of e5 has not changed (the queen already influenced e5 indirectly from g3). What has changed however is white's queen has left the kingside, so now black's idea of e5 is even more effective, just generally speaking.

Without the threat of e5, this would probably be a good way to improve the queen's placement. Unfortunately with the threat of e5, the queen is better placed on the kingside.

---

31.R-retreat

In general it's a good idea to avoid trades when you're behind, so this not a bad thought. Unfortunately for white (much like your suggestion for move 30) black is building threats. The rooks are about to infiltrate and attack white's king and help advance his e pawn. So white trades a pair of rooks here to relieve some of the pressure. With one less rook to use in the attack, black loses a little steam.

---

34.Nb7 or 34.Qf6 intending Kf1 and Nxa6
34.Qf6 Qg4 35.Kf1 and black has mate in 1, try to find it on your own

34.Nb7 and Black has a big attack after Rd3 and Qh3.

In general, both moves are very risky because they move away from the king while black has threats.

---

47.Qxf5
Black can play 47...Nf3+ which threatens mate in a few moves as well as threatens Qxf2 (because after Nf3 white's rook is undefended).

---

49 and 50 I agree.

- Thank you, 0110001101101000, for this.

:- )

I loved this explanation. It's very instructive even if you just read the questions and answers and don't look at the position :-)

How often do we forget these principles when playing?!? :-)

I am going to study the explanation of the post #41 and MAYBE use it to prepare myself to a challenge against Magnus Carlsen.

As I told before, his blunders in this game against Naka made me feel very confident on taking the World Champ title from him.

My start-up company,  "THE KING OF PATZERS CHESS ANALYSIS, INC.," is going to sponsor this possible challenge, specially we already have ONE sale (not yet received) as you can see in the thread below, which means this company is very promising.

https://www.chess.com/forum/view/game-analysis/your-games-realistically-analysed-by-the-king-of-patzers