3x+1 Class records calculation progress map
Status of the 3x+1 class record progress as of: Aug 16, 2019.
Intervals are indicated in blocks of 100,000,000,000,000 (100 E+12 or 100 trillion numbers).
Calculation of a single block takes approximately 7 days of (idle) time on 2.4 GHz processor.

All class records found so far can be viewed on the class records page.
This project can only run because of many cooperating contributors.
If you would like to contribute one or more blocks please go to the search page.
Note : the 3x+1 problem is just one of many distributed projects on the internet. 		Trajectory of 63,728,127
Progress history
July 11 2019 : All blocks up to 509,000 completed. One more class record confirmed.
May 12 2019 : All blocks up to 506,600 completed. One more class record confirmed.
May 5 2019 : All blocks up to 500,000 completed. Delay record 2264 and five more class records confirmed.
April 18 2019 : All blocks up to 479,400 completed.
April 5 2019 : All blocks up to 476,400 completed. Three more class records confirmed.
March 21 2019 : All blocks up to 455,200 completed. Lowest missing class record (2070) confirmed.
February 3 2019 : All blocks up to 435,300 completed. Two more class records confirmed.
January 15 2019 : All blocks up to 432,500 completed. Two more class records confirmed.
December 11 2018 : All blocks up to 416,800 completed. One more class record confirmed.
November 18 2018 : All blocks up to 413,000 completed. Six more class records confirmed.
November 2 2018 : All blocks up to 387,000 completed. Delay record 2261 and two more class records confirmed.
October 14 2018 : All blocks up to 366,400 completed. Six more class records confirmed.
Show/Hide earlier milestones
June 2018 : All blocks up to 346,000 completed. Three more class records confirmed.
December 2017 : All blocks up to 326,500 completed. Five more class records confirmed.
May 2017 : All blocks up to 305,400 completed. 258 reached. Two more class record confirmed.
October 2016 : All blocks up to 280,000 completed. Delay record 2258 and two more class records confirmed.
March 2016 : All blocks up to 275,200 completed. Four more class records confirmed.
March 19 2016 : Possible new Delay Record (Delay 2258) found by Lutz.
December 2015 : All blocks up to 263,350 completed. Four more class records confirmed. 2100 class records known.
July 2015 : All blocks up to 245,500 completed. Five more class records confirmed.
December 2014 : All blocks up to 222,280 completed. Three more class records confirmed.
November 2014 : All blocks up to 213,800 completed. Delay record 2255 and two more class records confirmed.
May 2014 : All blocks up to 203,920 completed. Three class records confirmed.
February 2014 : All blocks up to 194,060 completed. Five class records confirmed. All class records up to 2050 known.
November 2013 : All blocks up to 184,000 completed. Three more class records confirmed
June 2013 : All blocks up to 166,700 completed. Two more class records confirmed.
April 2013 : All blocks up to 165,200 completed. One more class record confirmed.
February 2013 : All blocks up to 160,740 completed. Six more class records confirmed.
November 2012 : All blocks up to 148,800 completed. Five more class records confirmed
May 2012 : All blocks up to 132,360 completed. Five class records confirmed.
January 2012 : All blocks up to 121,500 completed. Final missing class record below 2000 found.
December 2011 : All blocks up to 120,200 completed. One class record confirmed.
October 2011 : All blocks up to 117,000 completed. Three more class record confirmed.
July 2011 : All blocks up to 107,500 completed. Delay record 2254 and three class records confirmed.
April 2011 : All blocks up to 97,080 completed. Delay Record 2091 and two other class records confirmed.
November 2010 : All blocks up to 91,880 completed. Three class records confirmed.
August 2010 : All blocks up to 90,000 completed. Four more class records confirmed.
February 2010 : All blocks up to 82,700 completed. Two class records confirmed.
June 2009 : All blocks up to 76,160 completed. The lowest missing CR (1964) and one other confirmed.
April 2009 : All blocks up to 72,520 completed, passing 256. Three class records confirmed.
February 2009 : All blocks up to 71,020 completed. One more class record confirmed.
December 2008 : All blocks up to 69,740 completed. The lowest missing CR (1951) and two more confirmed.
November 2008 : All blocks up to 67,500 completed. Class record 2000 finally confirmed.
October 2008 : All blocks up to 66,380 completed. Four more class records confirmed.
May 2008 : All blocks up to 61,160 completed. The lowest missing CR (1925) and three others confirmed.
December 2007 : All blocks up to 58,600 completed. Four class records confirmed.
April 2007 : All blocks up to 54,540 completed. Five more class records confirmed.
October 2006 : All blocks up to 50,000 completed. Delay Record 2090 and five class records confirmed.
November 2005 : All blocks up to 46,100 completed. Double of Record 2045 confirmed as Delay Record 2046.
August 2005 : All blocks up to 45,040 completed. Five class records confirmed.
May 2005 : Delay Record of 2090 found at ±46,785 E+12 by Eric
February 2005 : All blocks up to 42,060 completed. Three more class record confirmed.
November 2004 : All blocks up to 40,000 completed. Four class records confirmed.
August 2004 : All blocks up to 37,500 completed. Another four class records confirmed.
May 2004 : All blocks up to 36,120 completed. Seven class records confirmed.
January 2004 : All blocks up to 31,960 completed. Five further class records confirmed.
November 2003 : All blocks up to 29,840 completed. One more class record confirmed.
August 2003 : All blocks up to 29,240 completed. Another fifteen class records confirmed.
April 2003 : All blocks up to 23,100 completed. Delay record 2045 and seven class records confirmed.
December 2002 : All blocks up to 20,100 completed. All class records below 1900 known.
November 2002 : All blocks up to 20,000 completed. Delay record 2042 and fourteen class records confirmed.
November 2002 : Delay Record of 2045 found at ±22,702 E+12 by Kevin
July 2002 : All blocks up to 16,460 completed. Delay record 2039 and fifteen class records confirmed.
April 2002 : All blocks up to 12,720 completed. Another fourteen class records confirmed.
March 2002 : Delay Record of 2042 found at ±17,026 E+12 by Michael
February 2002 : All blocks up to 9340 completed. Two more class records confirmed.
December 2001 : Delay Record of 2039 found at ±12,770 E+12 by Billy
November 2001 : All blocks up to 9020 completed. One Delay record and ten class records confirmed.
September 2001 : All blocks up to 6800 completed. Three Delay records and fourteen class records confirmed. 
August 2001 : All blocks up to 3600 completed. Two Delay records and five class records confirmed
June 2001 : Delay Record of 1958 found at ±7579 E+12 by Kevin
May 2001 : Delay Record of 1919 found at ±6482 E+12 by Kevin
April 2001 : Delay Record of 1916 found at ±4861 E+12 by Kevin
March 2001 : Delay Record of 1903 found at ±4320 E+12 by Kevin
March 2001 : Delay Record of 1895 found at ±3586 E+12 by Eric
March 2001 : Delay Record of 1874 found at ±2978 E+12 by Kevin
February 2001 : All blocks up to 2620 completed. Three class records confirmed.
January 2001 : New Class and Delay Record of 1871 found at 2234,047405,400065.

Range 2000-20000
completed (view)		Range 20000-40000
completed (view)		Range 40000-60000
completed (view)		Range 60000-80000
completed (view)		Range 80000-100000
completed (view)
Range 100000-120000
completed (view)		Range 120000-140000
completed (view)		Range 140000-160000
completed (view)		Range 160000-180000
completed (view)		Range 180000-200000
completed (view)
Range 200000-300000
completed (view)		Range 300000-400000
completed (view)		Range 400000-500000
completed (view)		 
Not yet assigned Assigned,
not yet started		 Assigned,
in progress		 Entire interval
completed		 Interval completed
class record found
500000-100
Kevin		 500100-200
Kevin		 500200-300
Kevin		 500300-400
Kevin		 500400-500
Kevin		 500500-600
Kevin		 500600-700
Kevin		 500700-800
Kevin		 500800-900
Kevin		 500900-000
Kevin
501000-100
Kevin		 501100-200
Kevin		 501200-300
Kevin		 501300-400
Kevin		 501400-500
Kevin		 501500-600
Kevin		 501600-700
Kevin		 501700-800
Kevin		 501800-900
Kevin		 501900-000
Kevin
502000-100
Kevin		 502100-200
Kevin		 502200-300
Kevin		 502300-400
Kevin		 502400-500
Kevin		 502500-600
Kevin		 502600-700
Kevin		 502700-800
Kevin		 502800-900
Kevin		 502900-000
Kevin
503000-100
Kevin		 503100-200
Kevin		 503200-300
Kevin		 503300-400
Kevin		 503400-500
Kevin		 503500-600
Kevin		 503600-700
Kevin		 503700-800
Kevin		 503800-900
Kevin		 503900-000
Kevin
504000-100
Kevin		 504100-200
Kevin		 504200-300
Kevin		 504300-400
Kevin		 504400-500
Kevin		 504500-600
Kevin		 504600-700
Kevin		 504700-800
Kevin		 504800-900
Kevin		 504900-000
Kevin
505000-100
Kevin		 505100-200
Kevin		 505200-300
Kevin		 505300-400
Kevin		 505400-500
Kevin		 505500-600
Kevin		 505600-700
Kevin		 505700-800
Kevin		 505800-900
Kevin		 505900-000
Kevin
506000-100
Kevin		 506100-200
Kevin		 506200-300
Kevin		 506300-400
Kevin		 506400-500
Kevin		 506500-600
Kevin		 506600-700
Kevin		 506700-800
Kevin		 506800-900
Kevin		 506900-000
Kevin
507000-100
Steven		 507100-200
Steven		 507200-300
Bob		 507300-400
Bob		 507400-500
Daniel		 507500-600
Daniel		 507600-700
Luiz		 507700-800
Luiz		 507800-900
Luiz		 507900-000
Luiz
508000-100
Lutz		 508100-200
Lutz		 508200-300
Lutz		 508300-400
Lutz		 508400-500
Lutz		 508500-600
Lutz		 508600-700
Lutz		 508700-800
Lutz		 508800-900
Lutz		 508900-000
Lutz
509000-100
Lutz		 509100-200
Lutz		 509200-300
Lutz		 509300-400
Lutz		 509400-500
Lutz		 509500-600
Lutz		 509600-700
Lutz		 509700-800
Lutz		 509800-900
Lutz		 509900-000
Lutz
510000-100
Teodor		 510100-200
Teodor		 510200-300
Chris:		 510300-400
Eric		 510400-500
Luiz		 510500-600
Luiz		 510600-700
Luiz		 510700-800
Luiz		 510800-900
Teodor		 510900-000
Teodor
511000-100
Steven		 511100-200
Steven		 511200-300
Steven		 511300-400
Steven		 511400-500
Steven		 511500-600
Steven		 511600-700
Steven		 511700-800
Steven		 511800-900
Eric		 511900-000
Eric
512000-100
Bob		 512100-200
Bob		 512200-300
Daniel		 512300-400
Daniel		 512400-500
Teodor		 512500-600
Teodor		 512600-700
Luiz		 512700-800
Luiz		 512800-900
Luiz		 512900-000
Luiz
513000-100
Kevin		 513100-200
Kevin		 513200-300
Kevin		 513300-400
Kevin		 513400-500
Kevin		 513500-600
Kevin		 513600-700
Kevin		 513700-800
Kevin		 513800-900
Kevin		 513900-000
Kevin
514000-100
Kevin		 514100-200
Kevin		 514200-300
Kevin		 514300-400
Kevin		 514400-500
Kevin		 514500-600
Kevin		 514600-700
Kevin		 514700-800
Kevin		 514800-900
Kevin		 514900-000
Kevin
515000-100
Kevin		 515100-200
Kevin		 515200-300
Kevin		 515300-400
Kevin		 515400-500
Kevin		 515500-600
Kevin		 515600-700
Kevin		 515700-800
Kevin		 515800-900
Kevin		 515900-000
Kevin
516000-100
Kevin		 516100-200
Kevin		 516200-300
Kevin		 516300-400
Kevin		 516400-500
Kevin		 516500-600
Kevin		 516600-700
Kevin		 516700-800
Kevin		 516800-900
Kevin		 516900-000
Kevin
517000-100
Kevin		 517100-200
Kevin		 517200-300
Kevin		 517300-400
Kevin		 517400-500
Kevin		 517500-600
Kevin		 517600-700
Kevin		 517700-800
Kevin		 517800-900
Kevin		 517900-000
Kevin
518000-100
Kevin		 518100-200
Kevin		 518200-300
Kevin		 518300-400
Kevin		 518400-500
Kevin		 518500-600
Kevin		 518600-700
Kevin		 518700-800
Kevin		 518800-900
Kevin		 518900-000
Kevin
519000-100
Steven		 519100-200
Steven		 519200-300
Steven		 519300-400
Steven		 519400-500
Steven		 519500-600
Steven		 519600-700
Steven		 519700-800
Steven		 519800-900
Eric		 519900-000
Eric
520000-100
Wenjie		 520100-200
Wenjie		 520200-300
Wenjie		 520300-400
Wenjie		 520400-500
Wenjie		 520500-600
Wenjie		 520600-700
Wenjie		 520700-800
Wenjie		 520800-900
Wenjie		 520900-000
Wenjie
521000-100
Wenjie		 521100-200
Wenjie		 521200-300
Wenjie		 521300-400
Wenjie		 521400-500
Wenjie		 521500-600
Wenjie		 521600-700
Wenjie		 521700-800
Wenjie		 521800-900
Wenjie		 521900-000
Wenjie
522000-100
Wenjie		 522100-200
Wenjie		 522200-300
Wenjie		 522300-400
Wenjie		 522400-500
Wenjie		 522500-600
Wenjie		 522600-700
Wenjie		 522700-800
Wenjie		 522800-900
Wenjie		 522900-000
Wenjie
523000-100
Wenjie		 523100-200
Wenjie		 523200-300
Wenjie		 523300-400
Wenjie		 523400-500
Wenjie		 523500-600
Wenjie		 523600-700
Wenjie		 523700-800
Wenjie		 523800-900
Wenjie		 523900-000
Wenjie
524000-100
Wenjie		 524100-200
Wenjie		 524200-300
Wenjie		 524300-400
Wenjie		 524400-500
Wenjie		 524500-600
Wenjie		 524600-700
Wenjie		 524700-800
Wenjie		 524800-900
Wenjie		 524900-000
Wenjie
525000-100
Wenjie		 525100-200
Wenjie		 525200-300
Wenjie		 525300-400
Wenjie		 525400-500
Wenjie		 525500-600
Wenjie		 525600-700
Wenjie		 525700-800
Wenjie		 525800-900
Wenjie		 525900-000
Wenjie
526000-100
Wenjie		 526100-200
Wenjie		 526200-300
Wenjie		 526300-400
Wenjie		 526400-500
Wenjie		 526500-600
Wenjie		 526600-700
Wenjie		 526700-800
Wenjie		 526800-900
Wenjie		 526900-000
Wenjie
527000-100
Wenjie		 527100-200
Wenjie		 527200-300
Wenjie		 527300-400
Wenjie		 527400-500
Wenjie		 527500-600
Wenjie		 527600-700
Wenjie		 527700-800
Wenjie		 527800-900
Wenjie		 527900-000
Wenjie
528000-100
Wenjie		 528100-200
Wenjie		 528200-300
Wenjie		 528300-400
Wenjie		 528400-500
Wenjie		 528500-600
Wenjie		 528600-700
Wenjie		 528700-800
Wenjie		 528800-900
Wenjie		 528900-000
Wenjie
529000-100
Wenjie		 529100-200
Wenjie		 529200-300
Wenjie		 529300-400
Wenjie		 529400-500
Wenjie		 529500-600
Wenjie		 529600-700
Wenjie		 529700-800
Wenjie		 529800-900
Wenjie		 529900-000
Wenjie
530000-100
Wenjie		 530100-200
Wenjie		 530200-300
Wenjie		 530300-400
Wenjie		 530400-500
Wenjie		 530500-600
Wenjie		 530600-700
Wenjie		 530700-800
Wenjie		 530800-900
Wenjie		 530900-000
Wenjie
531000-100
Wenjie		 531100-200
Wenjie		 531200-300
Wenjie		 531300-400
Wenjie		 531400-500
Wenjie		 531500-600
Wenjie		 531600-700
Wenjie		 531700-800
Wenjie		 531800-900
Wenjie		 531900-000
Wenjie
532000-100
Wenjie		 532100-200
Wenjie		 532200-300
Wenjie		 532300-400
Wenjie		 532400-500
Wenjie		 532500-600
Wenjie		 532600-700
Wenjie		 532700-800
Wenjie		 532800-900
Wenjie		 532900-000
Wenjie
533000-100
Wenjie		 533100-200
Wenjie		 533200-300
Wenjie		 533300-400
Wenjie		 533400-500
Wenjie		 533500-600
Wenjie		 533600-700
Wenjie		 533700-800
Wenjie		 533800-900
Wenjie		 533900-000
Wenjie
534000-100
Wenjie		 534100-200
Wenjie		 534200-300
Wenjie		 534300-400
Wenjie		 534400-500
Wenjie		 534500-600
Wenjie		 534600-700
Wenjie		 534700-800
Wenjie		 534800-900
Wenjie		 534900-000
Wenjie
535000-100
Wenjie		 535100-200
Wenjie		 535200-300
Wenjie		 535300-400
Wenjie		 535400-500
Wenjie		 535500-600
Wenjie		 535600-700
Wenjie		 535700-800
Wenjie		 535800-900
Wenjie		 535900-000
Wenjie
536000-100
Wenjie		 536100-200
Wenjie		 536200-300
Wenjie		 536300-400
Wenjie		 536400-500
Wenjie		 536500-600
Wenjie		 536600-700
Wenjie		 536700-800
Wenjie		 536800-900
Wenjie		 536900-000
Wenjie
537000-100
Wenjie		 537100-200
Wenjie		 537200-300
Wenjie		 537300-400
Wenjie		 537400-500
Wenjie		 537500-600
Wenjie		 537600-700
Wenjie		 537700-800
Wenjie		 537800-900
Wenjie		 537900-000
Wenjie
538000-100
Wenjie		 538100-200
Wenjie		 538200-300
Wenjie		 538300-400
Wenjie		 538400-500
Wenjie		 538500-600
Wenjie		 538600-700
Wenjie		 538700-800
Wenjie		 538800-900
Wenjie		 538900-000
Wenjie
539000-100
Wenjie		 539100-200
Wenjie		 539200-300
Wenjie		 539300-400
Wenjie		 539400-500
Wenjie		 539500-600
Wenjie		 539600-700
Wenjie		 539700-800
Wenjie		 539800-900
Wenjie		 539900-000
Wenjie
540000-100
Bob		 540100-200
Bob		 540200-300
Eric		 540300-400
Eric		 540400-500
Eric		 540500-600
Eric		 540600-700
Eric		 540700-800
Eric		 540800-900
Eric		 540900-000
Eric
541000-100
Daniel		 541100-200
Daniel		 541200-300
Teodor		 541300-400
Teodor		 541400-500
Luiz		 541500-600
Luiz		 541600-700
Luiz		 541700-800
Luiz		 541800-900
Dylan		 541900-000
Eric
542000-100
Lutz		 542100-200
Lutz		 542200-300
Lutz		 542300-400
Lutz		 542400-500
Lutz		 542500-600
Lutz		 542600-700
Lutz		 542700-800
Lutz		 542800-900
Lutz		 542900-000
Lutz
543000-100
Lutz		 543100-200
Lutz		 543200-300
Lutz		 543300-400
Lutz		 543400-500
Lutz		 543500-600
Lutz		 543600-700
Lutz		 543700-800
Lutz		 543800-900
Lutz		 543900-000
Lutz
544000-100
Kevin		 544100-200
Kevin		 544200-300
Kevin		 544300-400
Kevin		 544400-500
Kevin		 544500-600
Kevin		 544600-700
Kevin		 544700-800
Kevin		 544800-900
Kevin		 544900-000
Kevin
545000-100
Kevin		 545100-200
Kevin		 545200-300
Kevin		 545300-400
Kevin		 545400-500
Kevin		 545500-600
Kevin		 545600-700
Kevin		 545700-800
Kevin		 545800-900
Kevin		 545900-000
Kevin
546000-100
Kevin		 546100-200
Kevin		 546200-300
Kevin		 546300-400
Kevin		 546400-500
Kevin		 546500-600
Kevin		 546600-700
Kevin		 546700-800
Kevin		 546800-900
Kevin		 546900-000
Kevin
547000-100
Kevin		 547100-200
Kevin		 547200-300
Kevin		 547300-400
Kevin		 547400-500
Kevin		 547500-600
Kevin		 547600-700
Kevin		 547700-800
Kevin		 547800-900
Kevin		 547900-000
Kevin
548000-100
Kevin		 548100-200
Kevin		 548200-300
Kevin		 548300-400
Kevin		 548400-500
Kevin		 548500-600
Kevin		 548600-700
Kevin		 548700-800
Kevin		 548800-900
Kevin		 548900-000
Kevin
549000-100
Kevin		 549100-200
Kevin		 549200-300
Kevin		 549300-400
Kevin		 549400-500
Kevin		 549500-600
Kevin		 549600-700
Kevin		 549700-800
Kevin		 549800-900
Kevin		 549900-000
Kevin
550000-100
Wenjie		 550100-200
Wenjie		 550200-300
Wenjie		 550300-400
Wenjie		 550400-500
Wenjie		 550500-600
Wenjie		 550600-700
Wenjie		 550700-800
Wenjie		 550800-900
Wenjie		 550900-000
Wenjie
551000-100
Wenjie		 551100-200
Wenjie		 551200-300
Wenjie		 551300-400
Wenjie		 551400-500
Wenjie		 551500-600
Wenjie		 551600-700
Wenjie		 551700-800
Wenjie		 551800-900
Wenjie		 551900-000
Wenjie
552000-100
Wenjie		 552100-200
Wenjie		 552200-300
Wenjie		 552300-400
Wenjie		 552400-500
Wenjie		 552500-600
Wenjie		 552600-700
Wenjie		 552700-800
Wenjie		 552800-900
Wenjie		 552900-000
Wenjie
553000-100
Wenjie		 553100-200
Wenjie		 553200-300
Wenjie		 553300-400
Wenjie		 553400-500
Wenjie		 553500-600
Wenjie		 553600-700
Wenjie		 553700-800
Wenjie		 553800-900
Wenjie		 553900-000
Wenjie
554000-100
Wenjie		 554100-200
Wenjie		 554200-300
Wenjie		 554300-400
Wenjie		 554400-500
Wenjie		 554500-600
Wenjie		 554600-700
Wenjie		 554700-800
Wenjie		 554800-900
Wenjie		 554900-000
Wenjie
555000-100
Wenjie		 555100-200
Wenjie		 555200-300
Wenjie		 555300-400
Wenjie		 555400-500
Wenjie		 555500-600
Wenjie		 555600-700
Wenjie		 555700-800
Wenjie		 555800-900
Wenjie		 555900-000
Wenjie
556000-100
Wenjie		 556100-200
Wenjie		 556200-300
Wenjie		 556300-400
Wenjie		 556400-500
Wenjie		 556500-600
Wenjie		 556600-700
Wenjie		 556700-800
Wenjie		 556800-900
Wenjie		 556900-000
Wenjie
557000-100
Wenjie		 557100-200
Wenjie		 557200-300
Wenjie		 557300-400
Wenjie		 557400-500
Wenjie		 557500-600
Wenjie		 557600-700
Wenjie		 557700-800
Wenjie		 557800-900
Wenjie		 557900-000
Wenjie
558000-100
Wenjie		 558100-200
Wenjie		 558200-300
Wenjie		 558300-400
Wenjie		 558400-500
Wenjie		 558500-600
Wenjie		 558600-700
Wenjie		 558700-800
Wenjie		 558800-900
Wenjie		 558900-000
Wenjie
559000-100
Wenjie		 559100-200
Wenjie		 559200-300
Wenjie		 559300-400
Wenjie		 559400-500
Wenjie		 559500-600
Wenjie		 559600-700
Wenjie		 559700-800
Wenjie		 559800-900
Wenjie		 559900-000
Wenjie
560000-100
Steven		 560100-200
Steven		 560200-300
Steven		 560300-400
Steven		 560400-500
Steven		 560500-600
Steven		 560600-700
Steven		 560700-800
Steven		 560800-900
Eric		 560900-000
Eric
561000-100
Daniel		 561100-200
Daniel		 561200-300
Dylan		 561300-400
Dylan		 561400-500
Teodor		 561500-600
Teodor		 561600-700
Luiz		 561700-800
Luiz		 561800-900
Luiz		 561900-000
Luiz
562000-100
Bob		 562100-200
Bob		 562200-300
Steven		 562300-400
Steven		 562400-500
Steven		 562500-600
Steven		 562600-700
Steven		 562700-800
Steven		 562800-900
Steven		 562900-000
Steven
Contributions by
EricEric Roosendaal, Netherlands (author) LutzLutz Nebe, Germany
KevinKevin Hebb, Alberta, Canada BobBob Coffman, USA
WenjieFang Wenjie, China StevenSteven Cuthbert, England
LuizLuiz Antonio Souza, Brazil Chris:Christopher Peace, UK
TeodorTeodor Baev DanielDaniel Podobinski
DylanDylan Delgado   

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