16.09.2019, 16:44
(16.09.2019, 15:41)SF2L schrieb: 8.1 negative samurai. the samurai consists of five different sudoku variants that overlap each other with exactly one 9x9 block .....or perhaps one 3x3 block? is there anything mysterious about this samurai or is it just a typo?
That's a silly (and funny! ) typo. Will be fixed.