GM Sebastian Bogner (SUI, 2547) vs IM Frederick Waldhausen Gordon (SCO, 2455) · 1-0
Board 1, Switzerland vs Scotland · French Defence, Classical Variation, Burn Variation (C11)
By Professor Zugzwang AI Coach . This analysis was written by a Bogner Chess AI coach.
Round five, board one, Switzerland against Scotland, both teams arriving on six match points. Sebastian Bogner had White against an International Master rated 2455 and was served the French, Burn Variation: Black hands over the centre with and gets a quick, weakness-free set-up for it. White castled long, Black castled short, and that settled which way the game would run.
It ran the wrong way first. On move thirteen White started the kingside attack with a black knight already sitting on b4 next to his own king, and by move sixteen the position was about a pawn and a half worse. The road back went through a pawn sacrifice in the centre, two moves almost nobody at this level chooses, and a black passed pawn on a2 that White did not capture but surrounded.
The flank attack that comes too early: 13.h4
Castle long and you attack on the kingside, and is the move you want to play in this structure. It has one flaw: it does nothing about the knight on b4. That knight already stands in White’s half, eyeing a2 and c2, and with ...a5 and ...b5 it gets reinforcements that arrive faster than the h-pawn.
The move was , and it is not a defensive move but a question put to the knight: and the position is level. After the attack belongs to the other side. There followed , and at that point White is a pawn and a half worse without a single piece hanging: the a-file is open, and with the knight from b4 goes into an exchange that removes White’s light-squared bishop from the board.
Before any attacking move on the wing, count the enemy pieces that already stand in your own half. One is enough to delay the attack, two are enough to refute it. The move that sends such a piece away is nearly always worth the tempo.
IM Frederick Waldhausen Gordon (SCO, 2455)
GM Sebastian Bogner (SUI, 2547)
The pawn sacrifice nobody plays: 18.d5
Black has traded off White’s most dangerous attacker, half opened the a-file and holds a healthy advantage. Everything that looks like holding does hold, but only for a few moves: and each cost about half a pawn and leave Black free to start the a-pawn rolling. does the opposite and gives up a pawn to open the centre while White’s pieces are still the better placed ones.
The price is real and so is the return. After the pawn is back, and instead of a passive position White has two knights and a queen working through the middle of the board. That is the half pawn between this and the quiet moves, and it grows with every move Black is allowed to make undisturbed on the queenside.
No player of this strength volunteers for a sacrifice here, which is exactly why it is the move. When you are worse and your opponent is tidying up his advantage, you need the move that opens the position, not the one that shuts it. A pawn is the usual price, and usually too cheap.
The player on this move 2:01 in German
Sebastian Bogner on the pawn sacrifice: by his own reckoning he was clearly worse and knew that without dynamic play he simply goes under. The point of is the move order — recapture with the knight first and Black stabilises with c6, leaving him a pawn down for nothing. And why was the strategic mistake that handed him the strong knight against the bad bishop.
IM Frederick Waldhausen Gordon (SCO, 2455)
GM Sebastian Bogner (SUI, 2547)
The queen move almost nobody finds: 20.Qe5
The queen steps into the middle of the board and attacks four points at once: the bishop on e7, the pawn on d5, the pawn on c7 and the pawn on g7. All four are defended, and it is still the only move that holds the position. The natural alternatives and are a good pawn and a half worse, because they hand Black the time he needs: .
The opponent had to deal with the bishop on e7 and chose , which attacks the queen and tips the game over. One detail now decides everything: the knight on e4 is attacked by the d5 pawn and defended by the queen on e5 and the knight on c3. Move the queen away and only the knight on c3 is left, and that is not enough. costs a whole piece, because once the pawn has captured, the bishop on c6 looks at e4 again with nothing in between.
So is the only move, and after nothing of Black’s advantage is left. The pattern: when a piece of yours only stands because a second one defends it, check before every queen move whether an exchange changes that defence. A pawn that captures clears a line, and the piece that was safe a moment ago is on its own.
IM Frederick Waldhausen Gordon (SCO, 2455)
GM Sebastian Bogner (SUI, 2547)
The pawn on a2 that does not get taken: 25.Kb2
A pawn on a2, a white king on c1, and the knight on c3 able to take it. Taking it loses the game: after White is a piece down, because the rook on a8 defends the pawn and nothing white can follow it to a2. Most players grab it anyway, because a pawn on the seventh looks like a danger rather than like prey.
turns the danger into a weakness without touching the pawn. King and knight now both attack a2, the square is still defended only by the rook on a8, and one move later the count adds up: wins the pawn cleanly. The runner that was deciding the game a moment ago is now simply an object that cannot run away.
The game went , which tidies White’s own kingside and gives the pawn another move, and Black solved the problem himself: , and the pawn White had given up on move eighteen was back with material level. The question before any capture on such a square is always the same: how often is it attacked, how often defended, and who takes last? Here a single king move reverses the answer.
IM Frederick Waldhausen Gordon (SCO, 2455)
GM Sebastian Bogner (SUI, 2547)
Six king moves from d2 to d6
Between moves twenty-nine and forty-two little of consequence happened: Black gave checks, White shuffled his king, and both sides let small things go. The game was decided by . With the margin would have stayed at a good pawn; after the bishop move came , and the ending is worth a good two pawns.
Material is dead level and the position is not. Four of Black’s five pawns stand on light squares, the colour of his own bishop, the knight on d4 blockades the pawn on d5 and attacks f5, and the passed pawn ties the black rook to the b-file after . Two white pieces do work, one black piece guards a pawn.
The rest is the pattern of every won ending: bring the king in. , , , , , , six moves from d2 right across the board, and Black could do nothing about any of them. At the end the white king stands in the middle of Black’s position, mate can no longer be prevented, and Black resigned. Move the king the moment the queens come off, and settle the pawn questions afterwards.
IM Frederick Waldhausen Gordon (SCO, 2455)
GM Sebastian Bogner (SUI, 2547)
Verdict
A full point on board one, and the road there teaches more than the result. On move sixteen White was a pawn and a half worse because ignored the knight on b4. The game did not come back through a combination but through three decisions: traded a pawn for an open centre, put the queen on the one square from which it took away Black’s time for the a-pawn, and treated a passed pawn on a2 as a weakness rather than as a threat. Georgiadis drew on board two, Peng won on board three, Bänziger drew on board four, and with the win on top board Switzerland took the match against Scotland 3 to 1.
Moves
1-0
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