Opening 2 Clubs

2 Clubs opening bid is an artificial opening bid.  It does not promise any clubs, but it does promise a good enough hand to want to force to game.  The only exception is a balanced 23-24 count.  Unless 2NT is rebid partner must keep bidding until game is reached.

Example 1      S KJ98   H AK74    D AKQ   C K4    - open 2C and rebid 2NT showing 23-24 points
                                                  - If partner bids 2D over 2C, then over 2NT staymen and transfers apply

Example 2      S AK8   H AKQJ97   D 5     C AQ5   - open 2C and rebid hearts

Example 3      S AKQJ987   H K4   D 7     C AQ4   - open 2C and rebid spades.  
                                                  - There are only 18 high card points, there are only 3 losers.
                                                  - You always want to be in game on this hand and you are too strong to open 4S
                                                    because you might miss slam.

Example 4      S KQ98   H AK74    D AKQ   C A4    - open 2C and rebid 3NT showing 25+ points
                                                  - If partner bids 2D over 2C, then over 3NT staymen and transfers still apply