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PostPosted: Tue Apr 15, 2014 10:59 pm 
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Grand Master
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Location: Lethbridge, Alberta, Canada
Samurai Archive - Ruud's Puzzles      Image


This is an archive of Ruud's Samurai puzzles and solutions, which were originally posted on sudocue.net from 2006 to 2008. The ratings are those quoted by Ruud when he posted his puzzles.

For those who aren’t familiar with Samurai puzzles there are five overlapping grids, which can only be solved because each of the values in the overlap areas are in two of the grids.

There are diagrams for each puzzle and solution. Alternatively, if you are using a software solver, there are code strings. If you are using SudokuSolver first select File, Import, Samurai; then copy and paste the code string into the new window which opens and click OK. Other software solvers will have similar procedures.


Puzzle rating table, with links to archive entries.

At Ed's suggestion, I've added SudokuSolver(v3.6) scores to the table.

A score of 0.85 indicates that SS solved these puzzles using hidden singles and box/line intersections,
scores of 0.95 and 1.00 are when SS used hidden singles, hidden pairs and box/line intersections,
higher scores indicate the use of harder techniques.

+------------+-----------+-------+     +------------+-----------+-------+
| Puzzle | Rating | Score | | Puzzle | Rating | Score |
+------------+-----------+-------+ +------------+-----------+-------+
| Samurai 1 | Hard | 1.00 | | Samurai 10 | Moderate | 0.85 |
| Samurai 2 | Tough | 0.90 | | Samurai 11 | Moderate | 0.90 |
| Samurai 3 | Hard | 0.90 | | Samurai 12 | Tough | 0.90 |
| Samurai 4 | Tough | 0.90 | | Samurai 13 | Tough | 0.90 |
| Samurai 5 | Hard | 1.85 | | Samurai 14 | Tough | 0.90 |
| Samurai 6 | Hard | 0.90 | | Samurai 15 | Tough | 0.90 |
| Samurai 7 | Hard | 0.90 | | Samurai 16 | Tough | 0.90 |
| Samurai 8 | Tough | 0.90 | | Samurai 17 | Hard | 0.90 |
| Samurai 9 | Moderate | 0.90 | | Samurai 18 | Moderate | 0.90 |
| | | | | Samurai 19 | Hard | 0.90 |
+------------+-----------+-------+ +------------+-----------+-------+
Page #1 Page #2

+------------+-----------+-------+     +------------+-----------+-------+
| Puzzle | Rating | Score | | Puzzle | Rating | Score |
+------------+-----------+-------+ +------------+-----------+-------+
| Samurai 20 | Tough | 0.95 | | Samurai 30 | Moderate | 0.90 |
| Samurai 21 | Very Hard | 0.95 | | Samurai 31 | Hard | 0.90 |
| Samurai 22 | Moderate | 0.85 | | Samurai 32 | Hard | 0.90 |
| Samurai 23 | Tough | 0.90 | | Samurai 33 | Tough | 0.95 |
| Samurai 24 | Moderate | 0.90 | | Samurai 34 | Tough | 0.90 |
| Samurai 25 | Very Hard | 0.90 | | Samurai 35 | Very Hard | 0.90 |
| Samurai 26 | Tough | 0.95 | | Samurai 36 | Hard | 0.90 |
| Samurai 27 | Tough | 0.90 | | Samurai 37 | Hard | 0.90 |
| Samurai 28 | Tough | 0.90 | | Samurai 38 | Tough | 0.90 |
| Samurai 29 | Tough | 0.90 | | Samurai 39 | Tough | 0.95 |
+------------+-----------+-------+ +------------+-----------+-------+
Page #3 Page #4

+------------+-----------+-------+     +------------+-----------+-------+
| Puzzle | Rating | Score | | Puzzle | Rating | Score |
+------------+-----------+-------+ +------------+-----------+-------+
| Samurai 40 | Hard | 0.85 | | Samurai 50 | Tough | 0.90 |
| Samurai 41 | Hard | 0.95 | | Samurai 51 | Tough | 0.85 |
| Samurai 42 | Tough | 0.85 | | Samurai 52 | Very Hard | 0.90 |
| Samurai 43 | Hard | 0.85 | | Samurai 53 | Hard | 0.95 |
| Samurai 44 | Very Hard | 1.30 | | Samurai 54 | Hard | 0.85 |
| Samurai 45 | Hard | 0.85 | | Samurai 55 | Very Hard | 0.90 |
| Samurai 46 | Tough | 0.90 | | Samurai 56 | Tough | 0.85 |
| Samurai 47 | Hard | 0.90 | | Samurai 57 | Hard | 0.85 |
| Samurai 48 | Very Hard | 0.90 | | Samurai 58 | Moderate | 0.85 |
| Samurai 49 | Tough | 0.85 | | Samurai 59 | Hard | 0.90 |
+------------+-----------+-------+ +------------+-----------+-------+
Page #5 Page #6

+------------+-----------+-------+     +------------+-----------+-------+
| Puzzle | Rating | Score | | Puzzle | Rating | Score |
+------------+-----------+-------+ +------------+-----------+-------+
| Samurai 60 | Hard | 0.90 | | Samurai 70 | Very Hard | 0.90 |
| Samurai 61 | Hard | 0.90 | | Samurai 71 | Hard | 0.85 |
| Samurai 62 | Tough | 0.90 | | Samurai 72 | Tough | 0.85 |
| Samurai 63 | Tough | 0.90 | | Samurai 73 | Very Hard | 0.95 |
| Samurai 64 | Hard | 0.90 | +------------+-----------+-------+
| Samurai 65 | Very Hard | 0.85 | Page #8
| Samurai 66 | Very Hard | 0.90 |
| Samurai 67 | Tough | 0.90 |
| Samurai 68 | Tough | 0.90 |
| Samurai 69 | Tough | 0.90 |
+------------+-----------+-------+
Page #7


Roll of Honour

Ruud wrote:
For each correct Clueless Explosion, you earn 1 point.
Note: To enable new players to catch up with the regulars, only the last 26 Clueless Explosions will included in the score.

On Ruud's website, players with 26 points were shown with a gold medal, those with 25 points a silver medal and a bronze medal for those with 22 points.

+----+-------+--------------------------+----------------------+-------+
| | Medal | Player | Country | Score |
+----+-------+--------------------------+----------------------+-------+
| 1 | G | Nouggie | USA | 26 |
| 2 | G | Tomas Kollen | USA | 26 |
| 3 | G | Ryder | USA | 26 |
| 4 | B | Byron Okamoto | USA | 26 |
| 5 | G | Don Parker | USA | 26 |
| 6 | G | slowhand | Brazil | 26 |
| 7 | G | PeteTy | USA | 26 |
| 8 | G | jsmif | USA | 26 |
| 9 | G | Scott Warner | USA | 26 |
| 10 | G | lynn893 | Canada | 26 |
| 11 | G | Susan | USA | 26 |
| 12 | G | Oscar | México | 26 |
| 13 | G | Hans Schmitten | Germany | 26 |
| 14 | G | Ron Cain | USA | 26 |
| 15 | G | George Stein | USA | 26 |
| 16 | G | Brian Rothery | Sweden | 26 |
| 17 | G | Nasenbaer | Germany | 26 |
| 18 | G | Yian Annette Chien | Taiwan | 26 |
| 19 | G | Gemma | Netherlands | 26 |
| 20 | G | Børge T. Anderssen | Norway | 26 |
| 21 | G | Ria Tettelaar | Netherlands | 26 |
| 22 | S | Glyn | UK | 25 |
| 23 | S | sarah | USA | 25 |
| 24 | S | Susan Warner | Sweden | 25 |
| 25 | S | Jason McNary | USA | 25 |
| 26 | S | Marlie | Netherlands | 25 |
| 27 | B | Angela | Spain | 22 |
| 28 | B | sheila | USA | 22 |
| 29 | | Yuri Joubert | Germany | 21 |
| 30 | | Julie Stuckmeyer | USA | 17 |
| 31 | | Marilyn Dorant | UK | 16 |
| 32 | | Khunangkaro | Thailand | 15 |
| 33 | | tamara | Netherlands | 14 |
| 34 | | Jyothish B> | India | 13 |
| 35 | | Neil Sinclair | Canada | 12 |
| 36 | | Snek | Czech Republic | 12 |
| 37 | | E.K. | Taiwan | 11 |
| 38 | | DianaB | USA | 10 |
| 39 | | Bruce Adkins | USA | 9 |
| 40 | | Thomas Jaspers | Netherlands | 8 |
| 41 | | Danamario | Canada | 8 |
| 42 | | Steve Powers | USA | 8 |
| 43 | | Caida | Canada | 7 |
| 44 | | James G. Miller | USA | 7 |
| 45 | | RaVexx | Spain | 6 |
| 46 | | Helena | Spain | 5 |
| 47 | | Tiddlywinx | UK | 4 |
| 48 | | Chris Sluijter | Netherlands | 4 |
| 49 | | Alan Skinner | UK | 4 |
| 50 | | Gina Hines | USA | 3 |
| 51 | | Pierre-Hugues Carmichael | Canada | 3 |
| 52 | | Prince Charles | Netherlands | 3 |
| 53 | | Grant | USA | 3 |
| 54 | | kid | Germany | 2 |
| 55 | | MaryG | Eire | 2 |
| 56 | | T O'D | USA | 2 |
| 57 | | slowhand | Brazil | 1 |
| 58 | | Bernd Kohlen | Germany | 1 |
| 59 | | Vo Ngoc Hue | USA | 1 |
| 60 | | Alexej | Slovakia | 1 |
| 61 | | Pierre-Hugues Carmichael | Canada | 1 |
| 62 | | Pierre-Hugues Carmichael | Canada | 1 |
| 63 | | OldTree | USA | 1 |
| 64 | | Isabelle Rolland | France | 1 |
| 65 | | m_b_metcalf | USA | 1 |
| 66 | | Miss Universum | Germany | 1 |
| 67 | | S.M.Farooq Zaidi | United Arab Emirates | 1 |
| 68 | | Jesus | Spain | 1 |
| 69 | | DanielR | Germany | 1 |
| 70 | | Tony Cameron | Australia | 1 |
+----+-------+--------------------------+----------------------+-------+


+----------------------+-------+---------+---------+
| Country | Score | Players | Average |
+----------------------+-------+---------+---------+
| USA | 420 | 25 | 16.8 |
| Netherlands | 106 | 7 | 15.1 |
| Germany | 78 | 7 | 11.1 |
| Canada | 58 | 7 | 8.3 |
| Sweden | 51 | 2 | 25.5 |
| UK | 49 | 4 | 12.3 |
| Taiwan | 37 | 2 | 18.5 |
| Spain | 34 | 4 | 8.5 |
| Brazil | 27 | 2 | 13.5 |
| Norway | 26 | 1 | 26.0 |
| México | 26 | 1 | 26.0 |
| Thailand | 15 | 1 | 15.0 |
| India | 13 | 1 | 13.0 |
| Czech Republic | 12 | 1 | 12.0 |
| Eire | 2 | 1 | 2.0 |
| Australia | 1 | 1 | 1.0 |
| United Arab Emirates | 1 | 1 | 1.0 |
| Slovakia | 1 | 1 | 1.0 |
| France | 1 | 1 | 1.0 |
+----------------------+-------+---------+---------+

There was also a list for each of the last 26 puzzles of the order in which correct solutions were submitted. There were between 25 and 34 correct solutions submitted for each of these puzzles.

(Archive Note) The Roll of Honour tables were copied as listed on Ruud's site. Note that a few names have been repeated, probably due to people using different e-mail addresses to submit their entries. This has resulted in at least two of the country averages being too low.


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PostPosted: Sun May 04, 2014 4:26 pm 
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Grand Master
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Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 1
21st November 2006 Hard

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
600040900030009500009000013000800030400090007010005000540000000001500000008070000
000000016041070005080003900000500400030010060002008000000600080000040690000000000
000070000000300000000002000050000900200080007006000040000100000000009000000030000
400260000000000000000007000800010200900402003007050004050300000062000000000021005
000310078000000009000605100406000800300060002009000407007409000800000000950028000
Solution:
Image


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PostPosted: Sun May 04, 2014 4:27 pm 
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Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 2
28th November 2006 Tough

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
140000000900060010000071800000008600021000930005400000007130000050020000000000000
090000020600025004000008300000300250010000090047001000000400000000810009000000040
000702000000980000000000000590000003060040090200000087000000000000017000000405000
000018000000000000004006000000200106300000004809001000400900300900000000087360000
000730000000600000000000200120004000600000005000900076008000090000008501000075030
Solution:
Image


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PostPosted: Sun May 04, 2014 4:28 pm 
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Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 3
5th December 2006 Hard

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
000000000002601004105270000010009000068000470000100050000096000700403000000000000
030047000028600003000000006100700000062000540000002009000000000000009210000170080
000007000000000000000030000700000090002805400050000003000070000000000000000600000
000096000890032000700000000120007000040000090000400062000000007000370054030260000
000800000000003509000000020000600000005149800000005000080000605301900000000002004
Solution:
Image


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PostPosted: Sun May 04, 2014 4:30 pm 
Offline
Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 4
12th December 2006 Tough

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
705900020000000007900001038002400000000297000000003100390800000100000000020004000
000019050600000901030008000010000008005702600700000020000200060000000009000960000
000050000000009000000000000300004000190060024000800007000000000000900000000020000
900080000070009000000406000000000150501000704026000000002503000000600090003090008
000015230000064000000000050090000840800030005061000070020000000000940000056170004
Solution:
Image


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PostPosted: Sun May 04, 2014 4:31 pm 
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Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 5
19th December 2006 Hard

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
000702000000050000360000021000428000021000490500000003900000000070000000008503000
000000000300080009007603100003000400050040060000196000000802000000000300000907280
000604000000000000000802000000000000003908500090301080000080000000000000000000000
480000000060801000000050000800402009000000000100503007000307000024000150009000800
000205000000000530000906700091304270005000900400000008000769000020000040000000000
Solution:
Image


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PostPosted: Sun May 04, 2014 4:32 pm 
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Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 6
26th December 2006 Hard

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
400000002001503700000408000900206008020000070050000010004305000010000000008000000
000251000370000026000000000000712000006000400010904080000000207000000093000030000
000000000000000000000856000004503700030000010706000903000702000000309000000000000
002504000000000000310000000040000030700809001000306000069403210000090000000107000
000000069000901000000000010080000090000507000200000007003060400004080200800030005
Solution:
Image


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PostPosted: Sun May 04, 2014 4:33 pm 
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Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 7
2nd January 2007 Hard

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
500000000380700020000259070000000000000004700000510008026807000000030000005000000
001000000004520000800006050000150200060003400000000008000000930000940000000000080
000280000000070000000000000000900340070820000056100090000000000000500000000090000
006008000000504000900000000712460030008705010000000000067000000000020000000600971
000000000000007300000294600057030000000000001000000080400006500006073004008100270
Solution:
Image


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PostPosted: Sun May 04, 2014 4:34 pm 
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Grand Master
Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 8
9th January 2007 Tough

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
046080000003062100009500000000000000000006700000709652627400000000000000100005000
086370190400000000000000063510000000000006079000900000000000008000194000000087000
000600000000002000000000000000000000009805600080300000000100000000050000000070000
030040000600000000020000000000907201050000009300000004000081340081500002400002000
000000000000004300000621700054030000000000008000000090100007500007043001009800640
Solution:
Image


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PostPosted: Sun May 04, 2014 4:35 pm 
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Grand Master

Joined: Wed Apr 23, 2008 6:04 pm
Posts: 1626
Location: Lethbridge, Alberta, Canada
Samurai 9
16th January 2007 Moderate

Puzzle Diagram:
Image
Code: Select, Copy & Paste into solver, set for puzzle type Samurai:
100000007008300000000182006036000005450290078000054000070020000000000000980000000
596000071000419800000000009400080027030060000078350610000007000000000040000020000
000000000000569000000000000000302004240000076900604000000000000000983000000000000
000070000080000000000900000021063740000090080390020005900000000004387000510000867
000000079000000000000060040000420000640089017900000450200856000000002300100000008
Solution:
Image


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