
Very similar to G UZAKI Tile Efficiency 2 but it's different!
Now WWYD and WHY?

Who is G Uzaku?
Mahjong books author. And he is also works for other Mahjong tactics books as Proofreading.
He prefer play real mahjong rather than internet Mahjong games.
『麻雀 傑作「何切る」300 選』
300 Selected WWYD (Blue)

『麻雀定石「何切る」301選』
Mahjong established tactic 301 selected WWYD (RED)

New One!!!
『ウザク式麻雀学習 牌効率』
Uzaku Style MJ Studies "Tile Efficiency"
(GREEN)
Picked Tile efficiency related subjects from Blue and Red version and adding more.
Highly recommended for players who just started and not winning hands often.
G Uzaku also running his blog
(Slashing MJ Books! Slashing MJ games!)
Twitter: @mjbook
Even though I like terminal shanpon waits, I'd cut a pair (don't see any difference between them) and hope to get Pinfu (and 5p!).
I am really enjoying reading your well written articles. It looks like you spend a lot of effort and time on your Top Gun Jacket. I have bookmarked it and I am looking forward to reading new articles. Keep up the good work.