#SBIN -423
If sustain above 435 open for 512.
Base case (412)

#Probability

LACHIT BORPHUKAN : AN UNSUNG WARRIOR OF THE AHOM KINGDOM & THE GREAT BATTLE OF SARAIGHAT

Originally named as Lachit Deca, Lachit Borphukan, the fierce and invincible Ahom Commander, was born during the early 17th century at Betioni in the Golaghat district of modern Assam.

His father, Momai Tamuli Borbarua was the ‘Governor’ of the kingdom and also ‘Commander-in-Chief’ of Ahom army under King Pratap Singha during his reign starting from 1603 to 1639. Lachit received military training from an early age and joined the Ahom King Jayadhvaj Singha...

...(1648-1663) as a scarf-bearer.  The post ‘scarf-bearer’ or ‘Soladhara Barua’ is considered as a part of the incumbent king’s personal staff. Owing to his military training Lechit was appointed "Ghora Barua", Supdt. of the Royal horses. When Chakradhwaj Singha became king..

..of Ahom dynasty in 1663,he appointed him Suptd. of The Royal Guards &finally he was appointed as Borphukan by the king.Then onwards,he was known as Lachit Borphukan.Borphukan used to be top councillor in Ahom Kingdom. This position was embedded with executive & judicial powers.

Assam was facing incessant Islamic invasion since Jan1662, when Mughal General Mir Jumla II attacked Ahom capital Gargaon. He never defeated Ahom king Jayadhwaja Singha as king retreated to hill &continued Guerrilla warfare.Prolonged fight &prospect of stalemate disturbed Jumla.

So there's a class of puzzles called "river crossing puzzles" which involve having to cross a river on a boat/bridge containing some set of individuals/items with restrictions on which ones can be on the boat/left on each shore, right?

and the most common subclass of these problems is the one where you have 3 items/animals to cross with.
This is alternatively called the "fox, goose, and bag of beans" or "wolf, goat, and cabbage" puzzle.

the idea is that your boat can only carry one item at a time, but if you leave the wolf/fox unattended with the goat/goose, the wolf/fox will eat the goat/goose.
and similarly, the goose/goat will eat the beans/cabbage if left alone

so you have to set up a set of actions that never leaves either side of the river in one of the lose-states.

the solution to this variant being:
1. take the goat/goose over
2. return empty
3. take the wolf/fox over
4. return with the goat/goose
5. take the cabbage/beans over
6. return empty
7. take the goat/goose over

1/ new essay: What's next for marketplace startups? Reinventing the $10 trillion service economy, that's what. Co-authored with @ljin18 https://t.co/fgKbrHTnH5. A short thread 👇

2/ Marketplace startups have done incredibly well over the first few decades of the internet, reinventing the way we shop for goods, but have been less successful services. It's bc services are complex, subjective, fragmented, and often in real life. Makes it hard

3/ There's been 4 major eras at making the service economy work online. The Listings Era, the unbundled Craiglist era, the Uber for X era, and the Managed Marketplace era

4/ Each era has added more value than the last, and utilized technology innovations, from internet to social / "read/write web" to mobile. The "Unbundling Craigslist" era was particularly epic at generating startup ideas

5/ The problem is, all the low-hanging fruit has been picked off. The techniques that got us to here won't get us to the next phase. So we have to do some pretty different things. That's why "Managed Marketplaces" have been a big deal - hire folks as W-2s, certify quality, etc.

The Straddle is my favorite trade these days. But more often than not, one needs to adjust to make a good return from it. There are many ways to do this depending on your view, psychology and imagination. Will discuss a few that I use

The Straddle is a delta neutral strategy and it is important to keep deltas in check during the course of the Trade and not let them run away from you. Of course Volatility is the elephant in the room- but not going there as that will require a separate discussion

The first and most common method is to go 'inverted.' That is to say to shift the untested side to generate additional Premium and increase the runway to Breakeven. So if you start with a Straddle at 700 and price goes to 740, you can move the PE up to say 720.

How much should you move the untested side? While again this is a matter of skill, experience and artistry, the rule of thumb is to cut deltas by half. Remember, prices will move and you have to allow sufficient room for them to fluctuate

The second method is to shift the entire Straddle in the direction of the move. So if you have a 700 Straddle and Price goes to 740, you can shift the Straddle to 720. If you time this right, it can generally be done at virtually no cost or minimal cost.