Issue 21 
Season 8. April 5,2006
1. Isosudoku (6+6)
Fill in the grids so that every row, 9-cell diagonal, and 3x3 box contains the digits 1 through 9. In the shorter diagonals all digits must be different.
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Example:
Answer key: for each grid write down the content of the third row from top. For the example the answer would be: 123456789.
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Answers:
1a. 238591476
1b. 249356187
2. Three-point cut (5+5)
Cut each grid into 9 tetraminoes, so that within each grid, each type of tetramino contains a total of exactly three black circles. Each tetramino must contain at least one black circle. Tetraminoes can be rotated and/or refl ected. Some cuts are already made.
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Example:
Answer key: for each grid write down the content of the main diagonal going from top left to bottom right corner. For the example the answer would be: TTOOIL.
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Answers:
2a. LLLSTT
2b. LOSTLL
