In 1903, he tied for 11-12th in Kiev (3rd All-Russian Masters' Tournament, Mikhail Chigorin won).
He is sometimes said to have been a last-minute substitute for Mikhail Chigorin, who was apparently dropped after a dispute with the organizer Prince André Dadian, but Spinrad pointed out that this is unlikely because Moreau and Chigorin were both listed among the 14 competitors in a newspaper story in "The New York Sun" and "Salt Lake Herald" from 1902 December 21, several weeks before the tournament started on 1903 February 10.
Pillsbury, a young American unknown in Europe, was the surprise winner with 16½ out of 21 points – ahead of Mikhail Chigorin (16) and world champion Emanuel Lasker (15½).
A highly skilled exponent of gambit lines, he won the King's Gambit-themed Vienna Tournament of 1903 and defeated Lasker (+2-1=3) in a sponsored Rice Gambit tournament in Brighton.
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Chigorin has several chess openings or variations of openings named after him, the two most important being the Chigorin Variation of the Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Na5 10.Bc2 c5 11.d4 Qc7) and the Chigorin Defence to the Queen's Gambit (1.d4 d5 2.c4 Nc6).
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Indeed, he went on to add to the development of the concept through the work he carried out with closed variations of the Ruy Lopez.
Mikhail Gorbachev | Mikhail Baryshnikov | Mikhail Bulgakov | Mikhail Lermontov | Mikhail Vrubel | Mikhail Bakunin | Mikhail Botvinnik | Mikhail Skobelev | Mikhail Semyonovich Vorontsov | Mikhail Glinka | Mikhail Chigorin | Mikhail Tal | Mikhail Arkadyevich Svetlov | Mikhail Turovsky | Mikhail Trepashkin | Mikhail Sholokhov | Mikhail Khodorkovsky | Mikhail Kaneev | Mikhail Boyarsky | Mikhail Bakhtin | Mikhail Vorontsov | Mikhail Tukhachevsky | Mikhail Pletnev | Mikhail Nesterov | Mikhail Natarevich | Mikhail Kasyanov's Cabinet | Mikhail Tomsky | Mikhail Saltykov-Shchedrin | Mikhail Olegovich Yefremov | Mikhail Mikhaylovich Gerasimov |
In 1896, he took 2nd behind von Bardeleben and ahead of Jacques Mieses in Berlin (Triangular), tied for 7–8th in Nuremberg (Emanuel Lasker won), and tied for 6–7th in Budapest (Rudolf Charousek and Mikhail Chigorin tied for first).
Janowski was devastating against the older masters such as Wilhelm Steinitz (+5−2), Mikhail Chigorin (+17−4=4) and Joseph Henry Blackburne (+6−2=2).
But Maróczy's defensive style was often more than sufficient to beat the leading attacking players of his day such as Joseph Henry Blackburne (+5−0=3), Mikhail Chigorin (+6−4=7), Frank Marshall (+11−6=8), David Janowski (+10−5=5), Efim Bogoljubov (+7−4=4) and Frederick Yates (+8−0=1).
The Two Knights has been adopted as Black by many aggressive players including Mikhail Chigorin and Paul Keres, and World Champions Mikhail Tal and Boris Spassky.