Re: [Rails-devel] 1835 presidency swap: Bug fix required

[Schnell, V. <vol...@ar...>]

Hi Stefan,

below my opinions:
First: the Exchange of shares takes place after the share selling to the 
Bankpool.
Second: in the Bankpool can hold 50% of the Shares. (2.6.3.2) and each 
paper can be sold only as whole one (i.e.  20% Paper  as 1 Paper)


Am 21.08.2015 um 22:18 schrieb Stefan Frey:
> Another 1835 implementation issue:
>
> President swaps are not easy to understand for newbies in any 18xx 
> (you are not allowed to sell the president share, however you are 
> allowed to tear it apart, virtually sell one half of it to the pool 
> and then receive two shares by the new director, who gets the fixed 
> director certificate, then the old director puts one of received 
> shares into the pool and keeps the other).
>
> In 1835 the 20% shares make selling the presidency even more interesting.
>
> Selling the president certificate involves two steps of share movements:
>
> A) Exchange the president certificate with shares from the new president
>
> B) Move the remaining sold shares into the pool
>
> In 1835 both steps could include either 10% or 20% shares (PR: 5% or 
> 10% shares)
>
> Depending on what the president received in A) this might even change 
> the possible options for B.
>
> However it implies that the current president has to choose both A) 
> which certificate to exchange with the new president and B) which 
> certificate to put into the pool.
>
> The current implementation only asks for A) and has some serious bugs 
> in executing the share transfers.
>
> I intend to fix those bugs before the next release, however I would 
> ask if anyone has a different opinion on how it works for 1835?
>
> Example:
>
> In the attached save file OL has the following share distribution:
>
> (Remark: this is from a replay of one of Bill Stoll's 1835 pbem games 
> - see http://askwaltstollmd.com/bill/archive/1835zwolf/index.html
> Fun fact is that I played 1835 ftf with one of the players before he 
> moved to the US)
>
> Eyal: 50% (1 20% director, 1 20% share, 1 10% share)
> Marco: 40% (1 20% share, 2 10% share)
> Nick: 10% (1 10% share)
>
> What are the possible scenarios for Eyal to sell his directorship?
>
> ** Eyal selling 20% of shares:
>
> - Receiving 1 20% share from Marco-
> - Putting 1 20% share into the Pool
> Eyal ends up with 1 20% share, 1 10% share
> Marco ends up with 1 20% director, 2 10% shares
> Pool ends up with 1 20% share
>
> - Receiving 2 10% share from Marco
> - Putting 1 20% share into the Pool
> Eyal ends up with 3 10% share
> Marco ends up with 1 20% director, 1 20% share
> Pool ends up with 1 20% share
>
> - Receiving 2 10% share from Marco
> - Putting 2 10% share into the Pool
Not possible, because the Exchange of shares takes place after the share 
selling to the Bankpool.
>
> Eyal ends up with 3 10% share
> Marco ends up with 1 20% director, 1 20% share
> Pool ends up with 2 10% share
>
> There are similar cases for 30%, 40% and 50% selling of shares.
>
> Some special (hypothetical) cases:
>
> A) No shares in Pool
>
> Eyal: 40% (20%P + 20%)
> Marco: 20% (20%)
>
> IPO: 40% (4 10%)
>
> Is it possible for Eyal to sell 30%?
Not possible, because the Exchange of shares takes place after the share 
selling to the Bankpool. The Bank Pools always ends up with  1 20% Share
One way is possible: buying a 10% Share from the pool and selling the 
20% Share.
> Answer: No, as it not possible to get a 10% share out of IPO to Eyal.
> Eyal has to sell all 40%.
>
> B) 10% shares in Pool
>
> Eyal: 40% (20%P + 20%)
> Marco: 20% (20%)
>
> Pool: 40% (4 10%)
Not possible, because the Exchange of shares takes place after the share 
selling to the Bankpool. The Bank Pools always ends up with  1 20% Share
> Is it possible for Eyal to sell 30%?
> Answer: Likely yes? Is it possible for Eyal to swap the received 20% 
> share from Marco with a 10% of the Pool?

-- 
Volker Schnell
email: vol...@ar...
homepage: home.arcor.de\volker_schnell