[German] Spaß mit Korolkow

Für die Seite https://schachtraining.de/ habe ich für Elias Pfann ein paar Aufgaben kommentiert. Die erste finden Sie hier:
https://schachtraining.de/spass-studien/

2^666 - The Exponentiation of the Beast!

MATHEMATICA giving us all exponentiations of 2 up until 1000, finding those with the string 666.

power2 = 2^# & /@ Range[0, 1000];
satanic = (! StringFreeQ[#, "666"]) & /@ (ToString /@ power2);
Pick[Range[0, 1000], satanic]

{157, 192, 218, 220, 222, 224, 226, 243, 245, 247, 251, 278, 285, \
286, 287, 312, 355, 361, 366, 382, 384, 390, 394, 411, 434, 443, 478, \
497, 499, 506, 508, 528, 529, 539, 540, 541, 564, 578, 580, 582, 583, \
610, 612, 614, 620, 624, 635, 646, 647, 648, 649, 650, 660, 662, 664, \
666, 667, 669, 671, 684, 686, 693, 700, 702, 704, 714, 718, 720, 723, \
747, 748, 749, 787, 800, 807, 819, 820, 822, 823, 824, 826, 828, 836, \
838, 840, 841, 842, 844, 846, 848, 850, 857, 859, 861, 864, 865, 866, \
867, 868, 869, 871, 873, 875, 882, 884, 894, 898, 920, 922, 924, 925, \
927, 928, 929, 931, 937, 970, 972, 975, 977, 979, 981, 983, 985, 994}

2^{^666}=
3061802069160839023092406500876024752826394864138->666<-225770884719135200\
2289478439035090073805055513810523453685782024507137361403148294216156\
5170086143298589738273508330367307539078392896587187265470464 

Thanks to Hauke Reddmann for the information and code above! I contacted him after seeing that 2^{^800} starts with "666".

WCCC photos (Vilnius 2019)

While Yours Truly did not attend, he wants to share the photos from Vilnius with you. Mikalai Sihnevich has published his photos from August's Vilnius World Congress for Chess Composition on a Google Drive. Note that I do not take any responsibility for anything shown on the photos, this includes giving information about what is shown, or possible content changes of the directory in the future. As of writing this, there are only the photos from Vilnius, i.e. the links are clean.

I also want to remind readers of Branko's Ohrid photos.

Vilnius 2019:
https://drive.google.com/drive/folders/1ZK1Yn5XwIoJJBSN7_JFA1aKfxUJdWvMx

Ohrid 2018:
https://drive.google.com/drive/folders/1D6KBmJvlMTxHHrQ65Cew4kmYojJlm7wi