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Turbo 21 (three- and four-card combos)

This list is copied from the previous page, and shows a list of rules that apply to our remaining 8 cards after we have used all of our ten-value cards to make 16 21's:

To the best of my knowledge, there are precisely 19 combinations of 8 remaining cards that satisfy all the above rules. However, I might have missed some possible card combinations; if you know of a card combination that satisfies all the above rules and is not listed in the table below, please email me.

The card combinations for the remaining 8 cards are as follows (note that in each case below I indicate one 3-card 21 and one 4-card 21 and that the remaining 8th card must be a 2. Also note that at least one of the other 7 cards must be a 9, which makes it a bit easier to list every possible combination):

Three-card 21 Four-card 21
9-6-6 5-5-5-6
5-5-4-7
5-5-3-8
5-5-2-9
9-7-5 4-6-5-6
4-6-4-7
4-6-3-8
4-6-2-9
9-8-4 3-7-5-6
3-7-4-7
3-7-3-8
3-7-2-9
9-9-3 2-8-5-6
2-8-4-7
2-8-3-8
2-8-2-9
8-8-5 9-3-3-6
8-7-6 9-3-4-5
7-7-7 9-4-4-4