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| Moves | 1.h3 | ||||||||||||||||||||||||||||||||||||||||||||
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| ECO | A00 | ||||||||||||||||||||||||||||||||||||||||||||
| Named after | Hermann Clemenz | ||||||||||||||||||||||||||||||||||||||||||||
The Clemenz Opening is a chess opening beginning with the move:
This opening is named after Hermann Clemenz (1846–1908), an Estonian player. It is considered an irregular opening, and is classified under the code A00 (miscellaneous first moves by White) in the Encyclopaedia of Chess Openings .
Like Anderssen's Opening, 1.a3, 1.h3 is a time-wasting move, as it makes no claim on the central squares, nor does it aid development. It also leads to a slight weakening of White's kingside, albeit not as severely as Grob's Attack (1.g4) or Barnes Opening (1.f3). Since there is no need for White to make such a time-wasting first move,[ citation needed ] it is among the rarest of the 20 possible first moves. Nevertheless, IM Michael Basman has experimented with 1.h3, usually following it up with 2.g4 (transposing to the Grob), or 2.a3 followed by a quick c4, a line that has been dubbed the "Creepy Crawly". The “Creepy Crawly” is also known as the Global Opening.
Black has a number of playable responses, the most common being 1...d5 and 1...e5, which stake out a claim for central space. Another response, 1...b6 (or even 1...b5), intends to fianchetto a bishop to pressure White's weakened pawns, and forestall a White kingside expansion with g2–g4.
1...f5 is probably not Black's best reply to 1.h3, since White can then play 2.d4, transposing to a sharp line against the Dutch Defense once tried by Viktor Korchnoi.
In chess, irregular opening is a traditional term for any opening considered unusual or unorthodox. In the early 19th century it was used for any opening not beginning with 1.e4 e5 or 1.d4 d5. As opening theory has developed and openings formerly considered "irregular" have become standard, the term has been used less frequently.
The English Opening is a chess opening that begins with the move:
In chess, the fianchetto is a pattern of development wherein a bishop is developed to the second rank of the adjacent b- or g-file, the knight pawn having been moved one or two squares forward.
Grob's Attack is an unconventional chess opening in which White begins with the move:
Bird's Opening is a chess opening characterised by the move:
The Réti Opening is a hypermodern chess opening whose "traditional" or "classic method" begins with the moves:
The Amar Opening is a chess opening defined by the move:
The Saragossa Opening is a chess opening defined by the opening move:
The Dunst Opening is a chess opening in which White opens with the move:
The Barnes Opening is a chess opening where White opens with:
Anderssen's Opening is a chess opening defined by the opening move:
The King's Pawn Game is any chess opening starting with the move:
Larsen's Opening is a chess opening starting with the move:
The Keres Defence is a chess opening characterised by the moves:
The St. George Defence is an unorthodox chess opening for Black. The opening begins with the moves:
The Colle System, also known as the Colle-Koltanowski System, is a chess opening system for White, popularized in the 1920s by the Belgian master Edgard Colle and further developed by George Koltanowski.
The Desprez Opening is a chess opening characterised by the opening move:
Owen's Defence is an uncommon chess opening defined by the moves:
A flank opening is a chess opening played by White and typified by play on one or both flanks. White often plays in hypermodern style, attacking the center from the flanks with pieces rather than occupying it with pawns. Some of these openings are played often, although more often by advanced players than beginners, and 1.Nf3 and 1.c4 trail only 1.e4 and 1.d4 in popularity as opening moves.
The Van 't Kruijs Opening is a chess opening defined by the move:
