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Set Puzzles are created with a deck of cards from the [[wp:Set (game)|Set Game™]]. The object of the puzzle is to find sets of 3 cards in a rectangle of cards that have been dealt face up.
There are 81 cards in a deck.
Each card contains a unique variation of the following four features: ''color, symbol, number and shading''.
* there are three colors:
''red, green, purple''
* there are three symbols:
''oval, squiggle, diamond''
* there is a number of symbols on the card:
''one, two, three''
* there are three shadings:
''solid, open, striped''
Three cards form a ''set'' if each feature is either the same on each card, or is different on each card. For instance: all 3 cards are red, all 3 cards have a different symbol, all 3 cards have a different number of symbols, all 3 cards are striped.
There are two degrees of difficulty: [http://www.setgame.com/set/rules_basic.htm ''basic''] and [http://www.setgame.com/set/rules_advanced.htm ''advanced'']. The basic mode deals 9 cards, that contain exactly 4 sets; the advanced mode deals 12 cards that contain exactly 6 sets.
When creating sets you may use the same card more than once.
;Task
Write code that deals the cards (9 or 12, depending on selected mode) from a shuffled deck in which the total number of sets that could be found is 4 (or 6, respectively); and print the contents of the cards and the sets.
For instance:
'''DEALT 9 CARDS:'''
:green, one, oval, striped
:green, one, diamond, open
:green, one, diamond, striped
:green, one, diamond, solid
:purple, one, diamond, open
:purple, two, squiggle, open
:purple, three, oval, open
:red, three, oval, open
:red, three, diamond, solid
'''CONTAINING 4 SETS:'''
:green, one, oval, striped
:purple, two, squiggle, open
:red, three, diamond, solid
:green, one, diamond, open
:green, one, diamond, striped
:green, one, diamond, solid
:green, one, diamond, open
:purple, two, squiggle, open
:red, three, oval, open
:purple, one, diamond, open
:purple, two, squiggle, open
:purple, three, oval, open