Solution to last week's puzzle:
The letters in each row of the puzzle are the first letters of the prizes in the 1st, 3rd and 5th columns of a row the prizes on the Altador Cup prize page,
http://www.neopets.com/altador/colosseum/2010/prizes.phtml, excluding the words "Altador Cup" if that is part of the prize name.
Row 1: CH YO AL
Prize row 1:
Altador Cup
Chocolate Coins
Yooyu Paperweight
Altador Cup
Altador Snowglobe
Row 2: BR HA KR
Prize row 2:
Altador Cup
Brightvale Snowglobe
Altador Cup
Haunted Woods Snowglobe
Altador Cup
Krawk Island Snowglobe
Row 3: TE VI ME
Prize row 4: (No idea why they skipped row 3)
Altador Cup
Terror Mountain Snowglobe
Altador Cup
Virtupets Snowglobe
Altador Cup
Meridell Snowglobe
Row 4: DA CH YO
Prize row 5:
Altador Cup
Darigan Citadel Snowglobe
Chocolate Yooyu Cookie
Yooyu Eraser Set
Row 5: NO YA CO
Prize row 6:
Altador Cup
Notebook
Altador Cup
Yard Statue
Commemorative Program
Row 6: YO __ __
Prize row 7: (Has to be row 7 to match the YO - none of the other remaining rows has a prize starting with YO in the first column)
Yooyuball Lawn Play Set
Yooyu Hat
Vintage Darigan Altador Cup Jersey
This makes the last two pairs of letters YO VI, which following the instructions "Please submit ONLY the four letters, with no spaces.", should be submitted with no spaces as YOVI.