# This is the record-holding 19-ticket wheel taken from the page:
# http://lottery.merseyworld.com/Wheel/Wheel2.html

# It was constructed by Stefan Vandevelde <[email protected]>
# and later confirmed to guarantee at least a 2-match for a 6 from 49 lottery
# by the "verify" program written by Richard K. Lloyd 
# <[email protected]>
# using the command "verify -m 2 wheel19.txt" on 30th May 2004.

# Tie-breaker rule:
# If two or more wheels equal the record (i.e. use the same number of tickets
# to guarantee a 2-match), the one that will be used will be the one that
# covers the most number of 2-match combinations (the verifier program
# outputs that figure so it can be confirmed).

# Can *you* do any better ? I'm looking for any wheel less than 19 tickets
# that guarantees a 2-match in a 6 from 49 lottery. Use my verify program
# to confirm it's OK and then e-mail it to [email protected]
# to get your name up here !

# Roll of honour:

# Tickets      Combs covered    Name                E-mail
#   19          248 (21.1%)     Stefan Vandevelde   <[email protected]>
#   19          237 (20.2%)     Robert Perkis       <[email protected]>
#   19          216 (18.4%)     Ian Mills           <[email protected]>

 1  2  3  4  5  6
 1  2  7  8  9 10
 1  2 11 12 13 14
 3  4  7  8 13 14
 3  4  9 10 11 12
 5  6  7  8 11 12
 5  6  9 10 13 14
15 16 17 18 19 20
15 16 21 22 23 24
15 16 25 26 27 28
17 18 21 22 27 28
17 18 23 24 25 26
19 20 21 22 25 26
19 20 23 24 27 28
29 30 31 32 33 34
35 36 37 38 39 40
41 42 43 44 45 46
41 42 43 47 48 49
44 45 46 47 48 49