Akhand Samrajya yoga is one of the auspicious yogas in astrology. While Arishta yoga is one of the Inauspicious yoga in astrology. Lets study each yogas.
Akhand Samrajya yoga
This is one of the auspicious yoga. Akhand means collective or unbreakable, samrajya means kingdom. So, akhand samrajya means one who is bestowed with a collective kingdom. In other way, the yoga is indicating authority over kingdom and the authority cannot be taken
There are several criteria for this yoga. Below are the same.
Jupiter should be the lord of 5th or 11th house. So, this can be only for four ascendant which is Taurus, Leo, Scorpio, Aquarius. All the four signs are fixed signs so this yoga is possible only foe fixed sign ascendant.
Jupiter should be in its own, exalted or moolatrikona sign.
Any lord of 2nd, 9th and 11th house from ascendant must occupy the kendra house from moon sign.
it is believed that one with Akhand Samrajya yoga always remains on power and they remain in power throughout life. The examples can be ministers and politician.
Below Another way to assess the yoga is mentioned below
Jupiter should be the lord of 5th or 11th house. So, this can be only for four ascendant which is Taurus, Leo, Scorpio, Aquarius. All the four signs are fixed signs so this yoga is possible only for fixed sign ascendant.
Jupiter should conjunct with ascendant lord or lord of moon sign in kendra house. The conjunction is more powerful if it is in 10th house.
This is more powerful than the previous one.
However, the result of the yoga will depend on Dasha antardasha of planets.
When the lord of kendra (1,4,7,10) and trikona house (1,5,9) occupies 6th, 8th and twelfth house, it forms Arista yoga. When lord of 2nd, 3rd or 11th house is in 6th, 8th or 12th house, it also forms Arishta yoga . Likewise when dustana houses lord (6th, 8th and 12th house lord) occupies kendra, trikona or 2nd, 3rd or 11th house, it causes Arishta yoga. Arishta yoga is one of the inauspicious yoga. The energy exchange between auspicious and dustana houses(6th, 8th, 12th) gives obstacles and difficulties in the life of the person. This yoga can also cause physical harm to the individual but it always depends on the dasha and the house the planet is sitting.
When lord of 1st house is in 6th, 8th, 12th house, it causes Arishta yoga. Likewise, When lord of fifth house is in 6th, 8th or 12th house, it causes Arishta yoga. When lord of 6th house is in 1st house, it causes Arista yoga . When 2nd lord house is in 6th house, it can cause litigation and disputes while gaining wealth.
However, as we know when there is an exchange of planets between 6th, 8th and 12th house, it causes vipreet raj yoga. For example: when 6th lord in 8th house, it forms vipreet rajyoga and vice versa. When 8th lord in 12th house, it forms vipreet rajyoga and vice versa.