🎉 Special Upgrade Offer — exclusively for existing Chess King customers
Upgrade to Chess King Maximum 130+ — our biggest bundle with 130+ courses and Chess King University included — for just $120 instead of the normal $250 price for a forever license.
This offer is valid if you own:
• CT-ART 20 or Chess King University → enter your Chess King username in the Comments field at checkout
• Chess King, Chess Assistant, or ChessOK Aquarium (any version) → enter your software registration code in the Comments field at checkout
We will verify and deliver within 24 hours. Orders without a valid ID or code cannot be processed.