Key Berlin Game for White
Main line: 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8
Annotated Berlin Game Moves (from 1.e4 PGN)
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1.e4
This game was played at Norway Chess 2015 between two 2800+ grandmasters. White begins with 1.e4, taking space in the centre and opening lines for the queen and bishop.
9.h3
White makes a flexible waiting move, giving the king some air and preparing the pawn push g2-g4 to advance the kingside majority later.
9...h6
Black stops ideas like Bg5 or Ng5. Other moves such as 9...Bd7 or 9...Ke8 are playable, but they give White strong attacking chances according to theory.
10.Rd1+
White immediately activates the rook on the open d-file and checks the king. In the Berlin endgame Black's king is stuck in the centre, so forcing moves are very powerful.
10...Ke8
Black steps off the d-file to avoid tactics on d7. Playing ...Bd7 would lose material after g4 and e6, so Black has to walk with the king instead.
11.Nc3
White develops another piece toward the centre. The idea is to finish development and then start using the better pawn structure in the endgame.
11...Ne7
Black reroutes the knight so that the f5-square becomes free for the bishop. The knight on e7 also supports future kingside defense.
12.b3
Instead of going straight for Bf4, White prepares to develop the bishop to b2 and later double rooks on the d-file. It's a calm way to keep the position under control.
12...Bf5
Black develops the bishop to an active diagonal. Another idea was 12...Ng6 followed by Bb7, but even there White keeps the easier play by slowly improving the position.
14.Bb2
White places the bishop on the long diagonal. Now the pieces work well together while Black's dark-squared bishop on f8 is still sleeping behind its pawns.
15.Nce2
The knight heads toward f4 and also supports the important c4 break. White wants to control the d5-square and limit Black's counterplay.
17.Nf4
White jumps to f4, a strong central outpost. Black's pieces are still quite passive and have trouble finding good squares.
18.g4
White pushes the g-pawn to gain more space and clamp down on the f5-square. This also starts rolling the kingside pawn majority down the board.
19...Nc5
Black keeps the knight active, but playing ...g6 was another way to try to block White's light-squared bishop. However, that would weaken dark squares around the king even more.
20.Rxd8+
White exchanges rooks with check, gaining a tempo. After the rooks come off, it becomes even easier for White to activate the remaining pieces.
22.Ba3
White is happy to trade more pieces. In a pure king and pawn ending White's kingside majority would be winning, so simplifying helps White.
23...Bxa3
Black chooses to capture on a3. If Black had played ...fxe6 instead, White would still have a pleasant position, but the text move keeps material balanced a bit longer.
24.Nexg7
White wins a pawn and opens lines near the enemy king. Even after this capture White keeps better piece activity and coordination.
25.e6
White advances the e-pawn to force trades. When you are already a pawn ahead, exchanging pieces often makes your advantage more stable.
25...Bxf5
Black captures on f5. Taking on g7 instead would run into tactics after Ne7+, so Black chooses the safer-looking option, even though the position is still unpleasant.
27.Ng3
White returns the pawn in order to get a dream piece placement. Black's e6 and h6 pawns are weak, and the knight can later jump into strong outposts.
28.Kg2
White centralizes the king and prepares to attack Black's weak pawns while supporting the kingside pawn majority.
31.Rf3
White swings the rook to f3. If rooks are exchanged, the bishop versus knight endgame is winning for White, so trades are completely safe here.
35.Re2
White's pieces are perfectly placed and Black has no good plan. From here the win is mostly a matter of good technique and not blundering.
36.g5
White pushes the g-pawn to break open the kingside and create a dangerous passed pawn. This is the moment where the pawn majority really starts to roll.
45.Rg2
White brings the rook behind the advanced pawn and points it at Black's king. After this move Black cannot stop the pawn from queening without losing too much material, so he resigns.