User talk:P64/Bridge

This "User talk" is an experiment, created by the user. Will these notes be lost?

Double transfer responses
1C*-? positive two-steps when opener relays (inclg both 1H-1S/1N)
 * supposing that -1N = all hands >=44 Majors; -2D = 5+ hearts only
 * here '+' represents 1.5 or one specific 444
 * 5440 not covered here (12 rareties, sum 2%) but see double-indent remarks

-1H...1N/2N idle below 3S --as 3C/3D/3H splinters
 * 57+
 * 12. 1H 2C
 * 12. 1H 2D
 * 14. 1H 2Hj --namely 2H and 3C/3D/3H
 * 19+ 1H 2S : 4=344 -2 (1 flat, two 4432, one 4441[void?])
 * unless 2S=4144[void?] and 2N otherwise

-1S...3N idle below 4C --as 3D/3H/3S splinters
 * 74+, about 38% of all hands
 * 50+ 1S 2C : clubs[14] or 3444 -2[36+] (3 flat, three 4432, one 4441[void?])
 * except jump splinters --namely 3D/3H/3S
 * 12. 1S 2D
 * 12. 1S 2H+ --namely 2H/2S/2N/3C

-1N...available perhaps 2S/2N/3C/3D
 * 19++
 * 12. 1N 2D/2H
 * 7++ 1N 2S : 4=4(32/41) (one 4432, two 4441[void?])
 * 2N=4405?
 * 3C=4450?

-2C...3N idle below 4D --as 3H/3S/4C splinters
 * 26
 * 14. 2C 2Hj --namely 2H and 3H/3S/4C
 * 12. 2C 2S+ --namely 2S/2N/3C/3D

-2D...available; splinters may be defined as cheaply as 2S/3m
 * 14
 * 14. 2D if/because one-suit always

= 196 covered by this accounting, or 190++++

2015-02-12, four 5440 not covered here, nor 74; about 2 and 2 of 200 hands, or 1% each

The crux may be adequate handling of

-1S-1N-2C (where 3N alone is idle below 4C --as 3D/3H/3S splinters)
 * 50+, about 26% of all hands
 * : clubs[14] or 3444 -2[36+] (3 flat, three 4432, one 4441[void?])
 * except jump splinters --namely 3D/3H/3S

Tournaments

 * round 0: 4 teams (Swiss matchups)
 * 1 -- 2, 2, 0elim in 2 matches
 * 2 -- 1, 2, 1elim in 2
 * 3 - 1, 1, 1elim in 1 (2 elim in 5 no-repeat matches; always the one-loser has played all three and beaten two
 * 4a - 1, 0, 1elim in 1 (6 total; 3-0 champion; nmatches = 3432)
 * 4b - 0, 2, 0elim in 1
 * 5b - 0, 1, 1elim in 1 (7 total; 3-1 champion; nmatches = 4532 or 5432)

same (pre-scheduled)
 * 1 -- 2, 2, 0elim in 2 matches
 * 2c - 0, 4, 0elim in 2
 * 3c - 0, 2, 2elim in 2 (6 total; always round robin effect)
 * 4c - 0, 1, 1elim in 1 (7 total; nmatches = 4433)
 * 2d - 1, 2, 1elim
 * 3d - 1, 1, 1elim (2 elim in 5 no-repeat matches)
 * see lines a, b
 * 2e - 2, 0, 2elim in 2
 * 3e - 1, 1, 1elim in 1 (2 elim in 5 no-repeat matches; in effect matches 3-4-5 if necessary are best of three among double winners)
 * 4e -
 * 5e - 0, 1, 1elim in 1 if necessary (7 total; nmatches = 5522)


 * round 0: 8 teams (Swiss matchups)
 * 1 -- 4, 4, 0elim in 4 matches
 * 2 -- 2, 4, 2elim in 4
 * 3 -- 1, 3, 2elim in 3
 * 4a - 0, 3, 1elim in 2 (13 total)
 * 4b - 1, 1, 2elim in 2 (13 total)
 * 5a - 0, 2, 1elim in 1 (14)
 * 5b - 1, 0, 1elim in 1 (14)
 * 5c - 0, 2, 0elim in 1 (14)
 * 6a - 0, 1, 1elim in 1 (15)
 * 6c - same as 6a