Chinese New Year Supplement!
Advanced Mahjongg: Lesser known stuff (open to debate)

-Robbing the Kong
If a player declares a Kong of tiles, another player needs at last only one from for going out, this other player can claim one of the Kong's tiles and declare Mahjongg, as if the claimed tile has been discarded. This move is called "Robbing the Kong".

-Concealed hand gets 1double
Win with all 13 tiles still in hand, 14th tile is a discard.

-Fully Concealed hand gets 2doubles
Same as "concealed hand" except 14th tile is self drawn.

-One suite only (with honours which are dragons and winds) gets 1 double, without honours gets 3doubles.

-All terminals (1 and 9) and honours gets 3doubles.

Special Hand Name	Description	Award
Buried Treasure	Concealed Pungs in one suit with Winds/Dragons and a pair.	Limit
Heads and Tails	Pungs/Kongs of Ones and Nines.	Limit
The Wriggling Snake	A pair of Ones and a run from Two to Nine in the same suit, with each of the winds.	Limit
Three Great Scholars	Pungs/Kongs of all three Dragons, another Pung/Kong and a pair.	Limit
Four Blessings Hovering Over The Door	Pungs/Kongs of each of the four Winds with any pair.	Limit
The Thirteen Unique Wonders	One of each Dragon, one of each Wind, one of each One and one of each Nine. Any one of these tiles must be paired.	Limit
Heaven's Blessing	Mah Jong immediately made by East with the original fourteen tiles dealt to that player.	Limit
Earth's Blessing	Mah Jong immediately made by West, North or South using the first discard made by East.	Limit
Gathering the Plum Blossom from the Roof	The Plum Blossom is the Five of Circles. This is made by a player who draws a loose tile (the roof) as a replacement for a Kong, a Flower or a Season and that tile is the Plum Blossom which allows the player to go Mah Jong.	Limit
Plucking the Moon from the Bottom of the Sea	The Moon is the One of Circles. This is made by a player who upon drawing the last tile from the wall finds that it is the Moon which allows the player to go Mah Jong.	Limit

http://www.gravon.de/english/mahjongg.php
http://www.mastersgames.com/rules/mah-jong-rules.htm



Can't find anything on the flowers affecting winning hands (ie getting an impure suit of 1double rather than 3doubles), n i have this game MingXingSanQueYi which allows the winning tile to be for the middle tile of a in-hand chow.