Zukertort's 28.Qb4 — The London 1883 Brilliancy

At the London tournament of 1883, Johannes Zukertort placed his queen on an undefended square and invited Joseph Henry Blackburne, the most dangerous attacker in England, to take it. The justification lay buried many moves deep, in a forcing sequence of checks and quiet moves that still astonishes. Nearly a century and a half later, 28.Qb4 remains the standard against which deep combinations are measured.

London 1883: The Strongest Field of the Century

The London tournament of 1883 gathered almost everyone who mattered in world chess: Wilhelm Steinitz, Mikhail Chigorin, Szymon Winawer, James Mason, George Henry Mackenzie and the home favourite Joseph Henry Blackburne, known to the public as the Black Death for his ferocious attacking style. The event was a double round robin and a milestone in the organisation of the game, the first major tournament to use mechanical double-sided chess clocks in place of sandglasses. It belongs to a long line of great London events stretching back to the tournament of 1851, organised by Howard Staunton, that had made the city the centre of competitive chess history.

Zukertort, a Polish-born master settled in London, produced the tournament of his life. He started with a run of victories that broke the field's spirit and finished on 22 points from 26 games, three clear of Steinitz. Within that torrent of wins, one game stood apart.

The Build-Up: A Slow Squeeze Turns Violent

The game with Blackburne began quietly, with 1.c4 and a restrained queenside development. Zukertort placed his dark-squared bishop on b2, aiming it down the long diagonal at the Black king, a plan whose full meaning would only become clear twenty moves later. This is chess strategy of the highest order: every quiet developing move was a deposit toward the final combination.

By the middlegame Zukertort had built a broad pawn centre and begun rolling it forward with e4, e5 and f4. When Blackburne tried to blockade with 21...f5, Zukertort captured en passant, opened the f-file, and pushed his own f-pawn to f5 and then through to g6. After 25.fxg6, Blackburne grabbed counterplay with 25...Rc2, hitting the queen and threatening to invade on the second rank. Zukertort calmly answered 26.gxh7+ Kh8, leaving a white pawn lodged on h7, a detail that would prove decisive. Then came 27.d5+ e5, blocking the diagonal check, and the stage was set.

28.Qb4: The Queen Steps Into Thin Air

With his queen attacked and Black's rooks doubled menacingly on the c-file, Zukertort played 28.Qb4. The move attacks Black's queen on e7, but it also places White's own queen on a completely undefended square where Blackburne can simply capture it. The point is a forced win in every line. If 28...Qxb4, then 29.Bxe5+ unleashes the bishop that had waited on b2 since the opening. After 29...Kxh7 comes 30.Rh3+, the rook lifting from e3, and the Black king is dragged up the board into a net of rooks and bishop from which there is no escape. The far-flung queen on b4 can only watch. In every branch White either delivers mate or wins overwhelming material.

This is the deepest kind of sacrifice in the canon of chess tactics: not a check, not a capture, but a quiet sideways queen move whose threats only crystallise five and six moves later.

The Refusal and the Execution

Blackburne, a magnificent tactician himself, saw enough of the abyss to decline. He played 28...R8c5, hitting the queen and defending e5. Zukertort answered with the second brilliancy of the sequence, 29.Rf8+. Accepting with 29...Qxf8 fails to 30.Bxe5+ and 31.Qxe4+ with slaughter on the long diagonal, so Blackburne took the intruding pawn instead: 29...Kxh7. There followed 30.Qxe4+ Kg7 31.Bxe5+ Kxf8 32.Bg7+, a final quiet stab. If 32...Qxg7 then 33.Qe8 is checkmate, so after 32...Kg8 33.Qxe7 White had won the queen with the attack still raging, and Blackburne resigned.

The spectators understood at once what they had seen. The game was hailed in the tournament book and reprinted across Europe, and even Steinitz, never quick to flatter his rival, acknowledged the combination's depth in print.

What Came After: The Road to the First World Championship

London 1883 changed the politics of chess. Zukertort's three-point margin over Steinitz made a collision between the two unavoidable, and in 1886 they contested the first official world title match, the founding event of the World Chess Championships. There the story turned dark. Zukertort led 4 to 1 in New York, then collapsed as the match moved to St Louis and New Orleans, losing 10 to 5. His health, always fragile, deteriorated rapidly, and he died in 1888 at the age of 45, collapsing during a game at Simpson's Divan in London.

The Blackburne brilliancy became his monument. Where Steinitz left a theory of the game, Zukertort left a single perfect demonstration of what calculation and imagination could do together over a board.

The Legacy of a Single Move

28.Qb4 has never left the anthologies. It appears in virtually every collection of famous chess games, and generations of writers have ranked the combination among the finest ever played. Its influence runs through the attacking tradition: the long-diagonal bishop, the rook lift, the queen deflection sacrifice are now standard attacking machinery, taught to every improving player, and this game is one of the purest early examples of all three working in concert. Modern engines, probing the position with brutal indifference, confirm that the combination beginning at move 28 is sound.

For students of the great masters of that era, profiled among the famous chess players in our archive, the game also marks a transition. Blackburne represented the romantic attacking school, Steinitz the new science of position, and Zukertort, for one afternoon in London, fused the two completely.

Jaques of London — Making Chess Sets Since 1849

By 1883 the Staunton chess set, created by Jaques of London in 1849, was the universal standard for serious play, and a great London tournament was contested on exactly the pattern of pieces the firm had introduced a generation earlier. When Zukertort lifted his queen to b4, it was a Staunton-pattern queen that landed on the square. The same design, born in the Jaques workshop, remains the standard of tournament chess today.

Shop Staunton Chess Sets →

Frequently Asked Questions

Q: Why couldn't Blackburne simply capture the queen after 28.Qb4?

Because accepting it walks into a forced mating attack. After 28...Qxb4, White replies 29.Bxe5+, and the bishop on b2, which has been staring down the long diagonal all game, delivers a check that cannot be adequately met. After 29...Kxh7 White continues 30.Rh3+, lifting the rook from e3, and the Black king is driven into the open. Every retreat loses: the rooks and bishop hunt the king down the board while Black's queen sits uselessly on b4, far from the defence. Analysis published in the tournament book and verified many times since shows that White either mates or wins decisive material in every line. Blackburne saw this at the board, declined the queen, and tried 28...R8c5 instead, but the refusal lost too.

Q: How did the game actually finish after 28.Qb4?

Blackburne declined the queen with 28...R8c5, attacking the white queen and trying to hold the e5 pawn. Zukertort answered with a second hammer blow, 29.Rf8+. If Black captures with 29...Qxf8, then 30.Bxe5+ followed by Qxe4+ destroys him on the long diagonal, so Blackburne played 29...Kxh7, removing the pawn that had been lodged on h7 since move 26. There followed 30.Qxe4+ Kg7 31.Bxe5+ Kxf8 32.Bg7+, a beautiful quiet finish: if 32...Qxg7 then 33.Qe8 is mate, so Black played 32...Kg8, and after 33.Qxe7 White had won the queen with a continuing attack. Blackburne resigned. The whole sequence from move 28 onward is forced, which is what makes the original queen offer so remarkable.

Q: How strong was the London 1883 tournament?

London 1883 was one of the strongest tournaments of the entire 19th century. It was a double round robin including Wilhelm Steinitz, Joseph Henry Blackburne, Mikhail Chigorin, Szymon Winawer, James Mason and George Henry Mackenzie, effectively the whole of the world's elite. It was also a landmark in tournament organisation: it was the first major event to use mechanical double-sided chess clocks, replacing the unreliable sandglasses used previously. Zukertort produced the performance of his life, scoring 22 from 26 games and finishing three full points ahead of Steinitz in second place. That result established Zukertort as Steinitz's only credible rival and led directly to the first official World Championship match between the two men in 1886.

Q: Is 28.Qb4 really one of the greatest moves ever played?

It has a strong claim. Contemporaries were stunned: Steinitz, who was rarely generous to his great rival, praised the combination in print, and the game was celebrated in the tournament book and in chess columns across Europe. What sets 28.Qb4 apart from most queen sacrifices is its quietness. The queen moves to an undefended square, attacks Black's queen, and simultaneously offers itself, with the justification buried five and more moves deep in lines Zukertort had to calculate exactly. Later masters, including Romanovsky and numerous anthology editors, ranked the game among the finest ever played, and it appears in virtually every serious collection of great games. Some modern engines find defensive resources earlier in the game, but the combination beginning with 28.Qb4 itself is sound and remains a touchstone of attacking play.