Kokish Relay allows the bidding after strong 2C opening using relays.

2♣ - 2♦

 ?

• 2♠ - 5+♠ (♥ <= ♠);

• 2N - 22-23 HCP;

• 3m - 5+m;

• 3N - 26-27 HCP;

• 4N - 30-31 HCP;

• 5N - 34-35 HCP,

2♣ - 2♦

2♥ - 2♠

 ?

• 2N - 24-25 HCP;

• 3♣ - 5+♥, 4+♣;

• 3♦ - 5+♥, 4+♦;

• 3♥ - 6+♥;

• 3♠ - 5+♥, 4+♠;

• 3N - 28-29 HCP;

• 4N - 32-33 HCP;

• 5N - 36-37 HCP.