These include 4 ... 0-0, 4 ... c5, 4 ... d5, and 4 ... Nc6 ( 4 ... d6 intending ... Nbd7 and ... e5 is a rarer fifth option ).

A rarer third option is 4 ... Bb4 +, which aims to exchange the less useful dark-squared bishop, though this line tends to leave Black with a slightly passive position.

An optional high-output DBB engine with three twin-choke Weber 35 DCO 3 carburettors, special long duration camshafts, high compression 8. 6: 1 pistons and the dual-exhaust system boasted 195 hp ( 145 kW ), though this was rarer ( 10 cars thus equipped ) than the mid-level DBD option with triple SU 1. 75 " carbs and 180 hp ( 134 kW ) also with the dual exhaust system, fitted to 47 cars.

Trilobites are rarer than in previous periods, on a steady trend towards extinction, represented only by the proetid group.

New atoms are also naturally produced on Earth as radiogenic daughter isotopes of ongoing radioactive decay processes such as alpha decay, beta decay, spontaneous fission, cluster decay, and other rarer modes of decay.

In protocolary terms, states are distinguished as monarchy or republic depending on the style ( and usually mode of accession, see below ) of their head of state, a typical constitutional provision, but as such this is not defining for the actual political system, which often evolves significantly, or can remain unaltered in other respects despite a transition from monarchy to republic ( or, rarer, vice versa ).

Upon the John Byrne reboot of the Superman mythos after Crisis on Infinite Earths, kryptonite was made much rarer in the DC Universe and many of the multicolored varieties were eliminated.

Image: Old Lighthouse Waitemata Harbour. jpg | A rarer type of lighthouse on stilts in the Hauraki Gulf of New Zealand.

As a result, alleles that on average result in greater fitness become more abundant in the next generation, while alleles that in general reduce fitness become rarer.

Throwing spears became rarer as the Middle Ages drew on, but survived in the hands of specialists such as the Catalan Almogavars.

King Charles showed his gratitude to the city of Hereford on 16 September 1645 by augmenting the city's coat of arms with the three lions of Richard I of England, ten Scottish Saltires signifying the ten defeated Scottish regiments, a very rare lion crest on top of the coat of arms signifying " defender of the faith " and the even rarer gold-barred peer's helm, found only on the arms of one other municipal authority: those of the City of London.

Rose windows are also often found in the façades of churches of Spain and Italy, but are rarer elsewhere and are not found on the façades of any English Cathedrals.

DNA testing on the remains of the royal family proved conclusively in 2009 that Alexei suffered from Hemophilia B, a rarer form of the disease.

Thomsonites, one of the rarer zeolite minerals, have been collected as gemstones from a series of lava flows along Lake Superior in Minnesota and to a lesser degree in Michigan, U. S. A. Thomsonite nodules from these areas have eroded from basalt lava flows and are collected on beaches and by scuba divers in Lake Superior.

Clay Ridges and Plateaus also have deep Soils but are far rarer due to lack of representation in the park on these sites the soil is derived from Wianamatta clay and is considered rich land producing good quality forest.

In these cases the gate and wall towers often reach up to considerable heights, and gates equipped with two towers on either side are much rarer.

Depending on the particular model, a given wheel type might be much rarer than the others.

Some rebroadcast transmitters are licensed as semi-satellites, which are licensed to air separate commercials ( and, on rarer occasions, a limited amount of distinct programming ) targeted to their community of license.

They disappear altogether from the foot in the last half of the 17th century, and remain only under the heads, or, in rarer instances, on a knob on the shaft.

Formerly classified as Least Concern by the IUCN, it was found to have been rarer than previously believed and thus its status was uplisted to Endangered on the 2011 Red List of Threatened species.

A rarer form is the single dimple, which occurs on one side of the face only.

In a few species, such as the New Zealand Fantail, there exist two colour morphs, the common pied morph and the rarer black morph ( which is most common on the South Island ).

In the late 19th century, the rarer and more valuable books of the Library of Yale College were placed on special shelving at the Old Library ( now Dwight Hall ).

On rarer occasions it may also show a group of warriors or a female nude on the male side.

A much rarer error is a U. S denomination struck on a foreign planchet ( 17th, 18th, and 19th centuries, and very rarely 20th century ).

If a second compression test is performed shortly thereafter, and the new reading is much higher, it would be the ring seal that is problematic, whereas if the compression test pressure observed remains low, it is a valve sealing ( or more rarely head gasket, or breakthrough piston or rarer still cylinder wall damage ) issue.

Even rarer, Shatner and Spader each won a second consecutive Emmy while playing the same character in two different series.

It is the second most common form of haemophilia, rarer than haemophilia A.

In these syllables the ( rarer ) T1 is marked with-h-as the second letter.

* 16x18, a rarer size sometimes used for a second floor tom.

This event is much rarer and the second conjunction between Mercury and Venus is also invisible.

Assists are much rarer for outfielders than infielders ( with the exception of first basemen ) because the play is harder to make, and because outfielder assist situations occur less often than the traditional ground-ball assist for a shortstop, second baseman, or third baseman.

As regular violins recorded poorly with the old acoustic-mechanical recording method, Stroh violins were common in recording studios, but became rarer after record companies switched to the new electric microphone recording technology in the second half of the 1920s.

Live performances have been rarer, though the two mature symphonies ( now numbered 3 and 4 ) received premieres in Manchester, the first in 2003 and the second in 2005.

The second, rarer kind is called samāhāra dvandva and is a collective compound word, the meaning of which refers to the collection of its constituent members.

A second and much rarer version of the title song lyrics also exists.

Most Hurricanes occasionally form over the Pacific and move north to affect southern Honduras, but Pacific storms are generally less severe and their landfall rarer.

Another clear case is a rarer device seen on mechanically complicated doors like those of airliners, where ( instead of the whole hand moving down as it also rotates, on the door handles just described ) the axis of rotation is between the thumb and the outermost fingers, so the thumb moves up if the outer fingers move down.

A double suplex can also refer to two suplexes being performed by one wrestler on two opponents at the same time, although this move is much rarer and typically requires a larger wrestler to suplex two smaller wrestlers often as a counter to a standard double suplex.

Even rarer are cases where self-amputation is performed for criminal or political purposes:

Amok, the rarer form, is believed to stem from rage, insult, or a vendetta against a person or society for a wide variety of reasons.

This is mainly due to the limited extent of burrowing activity ; as such bioturbation became more prevalent throughout the Cambrian, environments capable of preserving organisms ' soft parts became much rarer.

Bromine is rarer than about three-quarters of elements in the Earth's crust ; however, the high solubility of bromide ion has caused its accumulation in the oceans, and commercially the element is easily extracted from brine pools, mostly in the United States, Israel and China.

A rarer instrument of the modern pitching system is the treble G flute.

Some examples of possible resolutions are that intelligent life is rarer than we think, or that our assumptions about the general behavior of intelligent species are flawed.

This inherent ability of hydrocarbons to bond to themselves is referred to as catenation, and allows hydrocarbon to form more complex molecules, such as cyclohexane, and in rarer cases, arenes such as benzene.

Although most congregations hire one or more Rabbis, the use of a professional hazzan is generally declining in American congregations, and the use of professionals for other offices is rarer still.

Although neodymium is classed as a " rare earth ", it is no rarer than cobalt, nickel, and copper ore, and is widely distributed in the Earth's crust.

It may also be by the use of a sensual vibrator or an erotic electrostimulation, and can additionally be achieved by stimulation of the nipples, uterus, or other erogenous zones, though this is rarer.

In any of these cases, a flush should rank above a full house ( in a 24-card deck it is actually rarer than four of a kind, but is rarely played that flushes are superior to four of a kind ).

" Pot-limit and no-limit Omaha eight-or-better can be found in some casinos and online, though no-limit is rarer.

A rarer form of hyperphenylalaninemia occurs when PAH is normal, but there is a defect in the biosynthesis or recycling of the cofactor tetrahydrobiopterin ( BH < sub > 4 </ sub >) by the patient.

Studies of this kind outside of Europe are even rarer, so it is difficult to make generalizations, but one small-scale study that compared transnational police information and intelligence sharing practices at specific cross-border locations in North America and Europe confirmed that low visibility of police information and intelligence sharing was a common feature ( Alain, 2001 ).