There are also many versions released over the years. 21 Blitz is a mix of Blackjack and Solitaire.
https://ebagcilar.com/forum/index.php?t ... 20.new#new
http://www.prepody.ru/topic75806.html
viewtopic.php?t=68669
http://www.prepody.ru/topic37938.html
http://www.prepody.ru/topic87177.html
http://forum.bandingklub.cz/viewtopic.p ... &t=1387235
http://horsecity.ru/phpBB3/viewtopic.php?f=32&t=233733
https://mmomakemoneyonline.net/threads/ ... no.384853/
https://debate.socialism.nl/forum/showt ... tid=168847
https://talk.hyipinvest.net/threads/310484/
http://oldsite.giessen46ers.de/fantalk/ ... 1&t=190500
https://45.83.123.20/viewtopic.php?t=12265
http://www.lada-xray.net/showthread.php ... post136342
http://forum3.bandingklub.cz/viewtopic. ... &t=1432658
https://mmomakemoneyonline.net/threads/ ... ok.495370/
https://mmomakemoneyonline.net/threads/ ... um.542011/
https://mmomakemoneyonline.net/threads/ ... no.460432/
viewtopic.php?t=93257
http://www.prepody.ru/topic38631.html
http://bbsc.gaoxiaobbs.cn/forum.php?mod ... 620&extra=