01.05.2020, 21:11
Some practice puzzles for Offspring can be found in the competition archive, the Swiss WPC qualifiers had two of them: https://logic-masters.de/Wettbewerbe/CE/...php?id=105
View puzzles can be found at janko.at: https://www.janko.at/Raetsel/View/index.htm
View puzzles can be found at janko.at: https://www.janko.at/Raetsel/View/index.htm