Notation
Rows
A row is any 1-by-9 part of the grid. The following grid has the row number in the first position of each row.
1 . . | . . . | . . . 2 . . | . . . | . . . 3 . . | . . . | . . . -------+-------+------- 4 . . | . . . | . . . 5 . . | . . . | . . . 6 . . | . . . | . . . -------+-------+------- 7 . . | . . . | . . . 8 . . | . . . | . . . 9 . . | . . . | . . .
We write rN to refer to row N.
Columns
A column is any 9-by-1 part of the grid. The following grid has the column number in the first position of each column.
1 2 3 | 4 5 6 | 7 8 9 . . . | . . . | . . . . . . | . . . | . . . -------+-------+------- . . . | . . . | . . . . . . | . . . | . . . . . . | . . . | . . . -------+-------+------- . . . | . . . | . . . . . . | . . . | . . . . . . | . . . | . . .
We write cN to refer to column N.
Boxes
A box is any of the outlined 3-by-3 regions in the grid. The following grid has the box number in the central position of each box.
. . . | . . . | . . . . 1 . | . 2 . | . 3 . . . . | . . . | . . . -------+-------+------- . . . | . . . | . . . . 4 . | . 5 . | . 6 . . . . | . . . | . . . -------+-------+------- . . . | . . . | . . . . 7 . | . 8 . | . 9 . . . . | . . . | . . .
We write bN to refer to box N.
Cells
To denote the cell in row M column N, we write rMcN. For example, r3c7 is the cell at the X, and r8c4 is the cell at the Y.
. . . | . . . | . . . . . . | . . . | . . . . . . | . . . | X . . -------+-------+------- . . . | . . . | . . . . . . | . . . | . . . . . . | . . . | . . . -------+-------+------- . . . | . . . | . . . . . . | Y . . | . . . . . . | . . . | . . .
Snyder Notation
A unit is either a row, column, or box. A candidate is any possible fill for a given cell.
Centre pencil marks denote candidates in a given cell. Corner pencil marks denote (within a box) that the marked number is necessarily in one of the marked cells.
Techniques
I will summarize some techniques below. If you don't like my explanations or want to see someone else's, I think the Learn Sudoku website is pretty clear and concise. In addition, the Sudoku Coach has a lot of high-quality practice puzzles.
Naked Single
If a cell sees all numbers but \( n \), then that cell must be an \( n \) in the finished grid.
1 . 6 | . . . | . . . X . . | 7 8 . | . . . . . 5 | . . . | . . . -------+-------+------- 2 . . | . . . | . . . . . . | . . . | . . . 3 . . | . . . | . . . -------+-------+------- . . . | . . . | . . . 4 . . | . . . | . . . . . . | . . . | . . .
The X above must be a 9. It sees 1234 in the column, 78 in the row, and 56 in the box.
Hidden Single
If a cell is the only possible position for \( n \) in a given unit, then that cell must be an \( n \) in the finished grid.
1 . X | . . . | . . . 3 . . | . . . | . . 2 . . 5 | . . . | . . . -------+-------+------- . 2 . | . . . | . . . . . . | . . . | . . . . . . | . . . | . . . -------+-------+------- . . . | . . . | . . . 2 . . | . . . | . . . . . . | . . . | . . .
The X above must be a 2. It is the only position in b1 where 2 is possible.
. . . | 1 . . | . . . . . . | . . . | . . . . . . | . . 3 | . . . -------+-------+------- . . . | 2 . . | . . . . 3 . | . . . | . . . . . . | 4 . . | . . . -------+-------+------- . . 3 | . . . | . . . . . . | 6 . . | . . . . . . | Y . . | . . .
The Y above must be a 3. It is the only position in c4 where 3 is possible.
Naked Pair/Triple/Quad/…
If a pair of cells in some unit contains exactly a pair of candidates, then those cells must contain that pair of candidates in the final solution.
. . . | . . . | Y 1 . . . . | 4 5 . | . 2 . . . . | . . . | X 9 3 -------|-------|------- . . . | . . . | . . . . . . | . . . | . . . . . . | . . . | . . 5 -------|-------|------- . . . | . . . | . . . . . . | . . . | . . 4 . . . | . . . | . . .
In the final grid, the cells XY must be 45, but not necessarily in that order. This means that none of the other cells in c7 can be 4 or 5.
The same reasoning applies to any triple/quadruple/etc of candidates in a unit.
X-Wing
. . . | 9 7 4 | . 6 . 4 1 6 | 5 3 8 | 9 7 2 . 7 . | 1 6 2 | 4 3 . -------+-------+------- 7 2 4 | 8 1 9 | 3 5 6 1 5 3 | 2 4 6 | 7 . . 6 9 8 | 7 5 3 | 2 1 4 -------+-------+------- . 4 . | 3 9 1 | 6 2 . . . 1 | 6 . 7 | 5 4 . . 6 . | 4 . 5 | . . .
- Puzz
- …974.6.416538972.7.16243.7248193561532467..698753214.4.39162…16.754..6.4.5…
- Solution
- 235974861416538972879162435724819356153246789698753214547391628981627543362485197
- Play
- https://tinyurl.com/2h6aaeeb
Swordfish
See this forum for a lot of top quality puzzles.
9 . . | 4 . . | 7 . . . 6 . | . 3 . | . 5 . . . 1 | . . 8 | . . 4 -------+-------+------- 2 . . | 8 . . | 1 . . . 3 . | . 4 . | . 7 . . . 7 | . . 9 | . . 5 -------+-------+------- 5 . . | 6 . . | 2 . . . 2 . | . 8 . | . 9 . . . 6 | . . 1 | . . 3
- Puzz
- 9..4..7…6..3..5…1..8..42..8..1…3..4..7…7..9..55..6..2…2..8..9…6..1..3
- Solution
- 952416738468732951371958624245873169639145872817269345583694217124387596796521483
- Play
- https://tinyurl.com/2dpsluk9
Simple Puzzles
Puzzle 01
. . . | . . . | . . . . 5 . | 7 8 . | 9 . . 6 . 4 | 1 . . | . . . -------+-------+------- 4 . . | . 6 . | . . . . . 8 | 5 . 7 | . . 1 1 . . | 4 . . | . . 3 -------+-------+------- . . . | 6 . . | . . . 5 4 7 | . . . | . . . . 1 . | 9 3 . | 4 . 8
- Puzz
- ……….5.78.9..6.41…..4…6……85.7..11..4….3…6…..547…….1.93.4.8
- Solution
- 789243165351786924624159837475361289938527641162498753893674512547812396216935478
Puzzle 02
. . . | 7 . . | 6 . . . 7 8 | . 3 . | . . 5 . 6 4 | . . . | . 1 . -------+-------+------- 5 . . | . . . | 2 6 8 1 4 . | . 6 8 | 7 . . . 3 . | . . 2 | . . . -------+-------+------- . . . | . . . | . . 1 . . . | . . . | 8 7 . . . 1 | . 2 . | 5 . 4
- Puzz
- …7..6…78.3…5.64….1.5…..26814..687…3…2………..1……87…1.2.5.4
- Solution
- 315794682278136495964285317597413268142968753836572149653847921429351876781629534
Puzzle 03
. . . | . 7 . | . . . 7 4 . | . . . | 1 5 . 2 . 5 | . . . | . 8 . -------+-------+------- . . . | . 9 7 | 8 . . . 5 3 | . . . | . 1 9 1 . . | . 3 . | . . 2 -------+-------+------- . 1 . | . . . | . . . 3 7 2 | . . . | 4 9 . 9 . 8 | . . . | . . .
- Puzz
- ….7….74….15.2.5….8…..978…53….191…3…2.1…….372…49.9.8……
- Soln
- 681975324749823156235416987426197835853264719197538642514789263372651498968342571
Puzzle 04
. 5 . | 8 . 9 | . . . 8 . . | 1 2 . | 6 7 . . . . | . . 4 | . . . -------+-------+------- . . . | . . 7 | . . 1 . . . | . . . | . . . 1 9 . | 5 8 . | . . . -------+-------+------- . 1 . | . 9 . | 8 . 2 . . 7 | . 6 8 | . 9 . . 2 . | . 4 . | . . 7
- Puzz
- .5.8.9…8..12.67……4……..7..1………19.58…..1..9.8.2..7.68.9..2..4…7
- Soln
- 256879413849123675371654928465937281782416359193582746614795832537268194928341567 https://tinyurl.com/2g9d529c#Replay
Puzzle 05
. . . | . . . | . 5 . . . 7 | 3 . 8 | 6 . . 8 . . | . 9 2 | . . 3 -------+-------+------- . . . | 8 . . | . . . . . 6 | . . 9 | 1 3 . . 3 . | 2 . . | 7 . . -------+-------+------- . . . | 6 . . | 3 . 9 . . . | . 2 . | . 8 . . . . | 9 . 1 | . 7 .
- Puzz
- …….5…73.86..8…92..3…8…….6..913..3.2..7…..6..3.9….2..8….9.1.7.
- Soln
- 329146857417358692865792413751863924246579138938214765172685349693427581584931276 https://tinyurl.com/2fdp9t7w#Replay
Easy Puzzles
Puzzle 06
. 6 . | 5 . . | . . 1 3 8 . | . . . | 6 . . 5 . . | . 3 . | . . 8 -------+-------+------- . 2 . | 9 8 . | . . . . . . | 3 . 4 | . 6 . . . . | 2 . . | . . 5 -------+-------+------- . . . | . 4 1 | 3 . . . 3 . | 8 . . | 9 . 6 . . . | . . . | . 2 .
- Puzz
- .6.5….138….6..5…3…8.2.98…….3.4.6….2….5….413…3.8..9.6…….2.
- Soln
- 967528431381479652542136798426985173875314269193267845259641387734852916618793524 https://tinyurl.com/2z8urd4u#Replay
Puzzle 07
. . . | . . . | 6 4 1 . . 2 | . . . | . . . 5 . . | . 3 . | 2 . . -------+-------+------- . . 7 | . . . | . . . . 1 . | . . . | 5 3 4 6 . . | . . . | 1 . 7 -------+-------+------- . 9 . | . 4 . | . . 3 . . 3 | 5 . 2 | 7 . . . 2 . | . . 9 | . 5 .
- Puzz
- ……641..2……5…3.2….7…….1….5346…..1.7.9..4…3..35.27…2…9.5.
- Soln
- 938257641142896375576134298387415962219768534654923187795641823463582719821379456 https://tinyurl.com/2pvyyqfv#Replay
Puzzle 08
4 . . | . . . | . 3 6 . 7 . | 2 9 . | . . . . . . | 6 . . | . . . -------+-------+------- 6 . . | 9 . . | . . 2 . 3 9 | . 2 . | . 6 1 2 . 4 | 8 . 1 | 7 . . -------+-------+------- 1 . 3 | . . . | 4 8 . 7 . . | 4 . . | . . . . . . | . . . | . . .
- Puzz
- 4……36.7.29…….6…..6..9….2.39.2..612.48.17..1.3…48.7..4…………..
- Soln
- 482157936376298154591643278617935842839724561254861793123576489768419325945382617 https://tinyurl.com/2oxzfhl3#Replay
Puzzle 09
8 . . | . . . | 6 9 . . . . | . . 4 | . . . 7 . 2 | . 6 . | 8 . 1 -------+-------+------- . . . | . 9 7 | . . 8 . . . | . . . | . . . 1 . . | . . . | . . 7 -------+-------+------- 2 8 . | 3 1 . | . . . . . 1 | . 4 2 | . . 9 4 . 7 | . . 9 | 1 . 3
- Puzz
- 8…..69……4…7.2.6.8.1….97..8………1…….728.31……1.42..94.7..91.3
- Soln
- 835271694916854372742963851524197368673428915198536247289315476361742589457689123 https://tinyurl.com/2zgrrt85#Replay
Puzzle 10
. . . | . 3 . | . . 1 5 . . | 1 . . | . 9 . . 9 . | 5 . . | . 2 8 -------+-------+------- . 5 . | . . 6 | . . . . 2 3 | 8 . 7 | . 6 . . . . | . 1 3 | . . 7 -------+-------+------- . . 7 | . . . | . . . . . . | 6 8 . | . . . . 6 8 | . 7 . | . . 9
- Puzz
- ….3…15..1…9..9.5…28.5…6….238.7.6…..13..7..7………68…..68.7…9
- Soln
- 682739541574128396391564728759246813123857964846913257417392685935681472268475139 https://tinyurl.com/2f6btd7h#Replay
Intermediate Puzzles
Puzzle 11
. . . | . 7 . | 2 . . 1 . . | 3 5 . | 7 . 6 . . 9 | . 2 1 | 3 5 . -------+-------+------- 6 1 . | . . . | . 7 . . 3 . | . . . | . 2 . . . 4 | . 3 . | 5 . . -------+-------+------- . 2 . | . . . | . . . . . 7 | . . 6 | . 9 . . 4 . | . . . | . . .
- Puzz
- ….7.2..1..35.7.6..9.2135.61…..7..3…..2…4.3.5…2………7..6.9..4…….
- Soln
- 563874219182359746479621358615942873738165924294738561926513487357486192841297635 https://tinyurl.com/2dvoecgk#Replay
Puzzle 12
. 6 7 | . 1 . | . . . . . . | . 8 4 | 7 . 2 . . . | . . 5 | 6 . . -------+-------+------- . 9 . | . . . | 2 . . . 1 4 | . . . | . . . . 7 5 | . 6 . | 1 8 . -------+-------+------- . . . | . 7 . | . 6 . . . 9 | . . . | . 4 . . . 8 | . 9 . | . . .
- Puzz
- .67.1……..847.2…..56…9….2…14…….75.6.18…..7..6…9….4…8.9….
- Soln
- 567912438931684752482735619896541273314827596275369184143278965629153847758496321 https://tinyurl.com/2pl23537#Replay
Puzzle 13
5 . . | . 7 9 | 2 4 . . . . | . . . | 3 9 . . 8 . | . . . | . 5 . -------+-------+------- . . 7 | . . 6 | . . . . . . | . . 2 | . . . . 3 . | . 4 . | . 7 . -------+-------+------- 3 . . | . . . | . 8 6 . 5 . | . 2 . | . . . 7 4 . | 8 . . | . 3 .
- Puzz
- 5…7924…….39..8…..5…7..6……..2….3..4..7.3……86.5..2….74.8…3.
- Soln
- 563179248274568391189234657817356429495782163632941875321497586958623714746815932 https://tinyurl.com/2p5hr969#Replay
Puzzle 14
. . . | 9 . . | . . 3 . . 5 | . 8 . | 1 . . . . . | . . . | 6 8 5 -------+-------+------- 9 . 3 | 1 . . | . 6 . 5 7 . | 4 . 9 | . . . . . 4 | . 6 7 | . . . -------+-------+------- . . . | . . 4 | 3 1 . . . . | 7 . . | 5 . 8 . . . | . . . | . 4 .
- Puzz
- …9….3..5.8.1……..6859.31…6.57.4.9…..4.67……..431….7..5.8…….4.
- Soln
- 618975423245683179397241685923158764576429831184367952752894316461732598839516247 https://tinyurl.com/2nc8fx9v#Replay
Puzzle 15
. 1 . | . 6 . | . 5 2 . 8 . | 9 2 . | . 6 . . . . | . . 5 | . 1 3 -------+-------+------- . . 8 | . . . | . . . . . . | . . . | . . . 4 9 5 | . . . | 6 . . -------+-------+------- . . . | . 9 . | . 3 4 9 . . | . 8 . | . . . . . 4 | 2 5 3 | . . .
- Puzz
- .1..6..52.8.92..6……5.13..8……………495…6……9..349…8……4253…
- Soln
- 719364852583921467246875913128649375367518249495732681852196734931487526674253198 https://tinyurl.com/2qv4czcr#Replay
Expert Puzzles
Puzzle 16
. 4 . | 8 . . | . . 5 . . 5 | . . 6 | . . . . . . | . 4 9 | 6 8 . -------+-------+------- 5 . . | 3 1 . | . 6 . . 6 . | . . 8 | 2 4 . . . 2 | . . . | . . 9 -------+-------+------- 3 . . | . . 1 | . . . . 2 . | . . . | . 9 . 1 . . | . . . | 4 . .
- Puzz
- .4.8….5..5..6…….4968.5..31..6..6…824…2…..93….1….2…..9.1…..4..
- Play
- https://tinyurl.com/yoxonk24
Puzzle 17
4 5 . | . . . | 9 6 7 . 3 8 | . . 6 | . . . 1 . . | . . . | 5 . . -------+-------+------- . . . | . . 9 | 7 . 1 . . . | . 1 . | . . 4 . 1 . | 7 6 4 | . 5 . -------+-------+------- . . . | 6 . . | . 3 9 8 . . | . 9 . | . . . . . . | 3 . . | 1 . .
- Puzz
- 45….967.38..6…1…..5…….97.1….1…4.1.764.5….6…398…9…….3..1..
- Play
- https://tinyurl.com/yw2vzbcn
Puzzle 18
4 . 1 | . . . | . . . . 8 . | 7 4 . | . . . . 7 . | . . . | 9 6 . -------+-------+------- . 2 . | 4 7 . | . . 6 8 . . | 9 3 . | . . . . . . | . 2 6 | . 1 . -------+-------+------- . . . | 6 . 8 | . . . 1 . 2 | . 9 . | 4 8 . . 9 . | . . . | . . .
- Puzz
- 4.1…….8.74…..7….96..2.47…68..93……..26.1….6.8…1.2.9.48..9…….
- Play
- https://tinyurl.com/ysug3ldz
Puzzle 19
. . . | . . . | . 4 8 . . 5 | 9 . 7 | . . . . . . | . 3 8 | . . . -------+-------+------- . 4 . | . 1 . | . . . . 3 . | . 4 5 | 7 . . . 9 . | 8 . . | . . . -------+-------+------- . 5 . | . . . | . . 1 . . 6 | . 7 . | 8 . 9 . . . | . . . | . 7 .
- Puzz
- …….48..59.7…….38….4..1…..3..457…9.8……5……1..6.7.8.9…….7.
- Play
- https://tinyurl.com/2x4jw6cn
Puzzle 20
. . . | . 1 7 | 3 . 9 . 1 . | 9 . . | . 4 2 . . . | . 6 . | . 1 . -------+-------+------- 2 . . | . . . | . . . 8 4 . | 3 . 9 | . . 7 1 . . | 2 . . | 8 6 . -------+-------+------- . 7 9 | . . . | . . . . . . | . . . | 2 9 . 6 . . | . . . | . . .
- Puzz
- ….173.9.1.9…42….6..1.2……..84.3.9..71..2..86..79…………29.6……..
- Play
- https://tinyurl.com/ytmg7bnl
X-Wing Puzzles
Puzzle X
. 9 7 | 3 4 5 | . 1 6 6 5 4 | 2 1 8 | 3 7 9 . . . | 6 9 7 | 5 4 . -------+-------+------- 7 6 9 | 5 3 2 | 4 8 1 5 2 1 | 9 8 4 | 6 3 7 . 4 . | 7 6 1 | 9 2 5 -------+-------+------- 4 7 5 | 8 2 9 | 1 6 3 9 3 . | 1 7 6 | . 5 4 . . 6 | 4 5 3 | 7 9 .
- Puzz
- .97345.16654218379…69754.769532481521984637.4.76192547582916393.176.54..645379.
Puzzle XX
. 7 3 | 9 5 4 | . 2 8 . 5 4 | . 8 3 | . . 9 8 9 . | 7 1 . | 4 3 5 -------+-------+------- 4 6 . | 3 7 5 | 8 9 . 5 . 7 | . 9 8 | . 4 . 9 . 8 | 4 2 . | . . . -------+-------+------- 7 . . | 8 4 . | 9 . 3 . 8 9 | 5 3 7 | . 1 4 3 4 . | . 6 9 | . 8 .
- Puzz
- .73954.28.54.83..989.71.43546.37589.5.7.98.4.9.842….7..84.9.3.89537.1434..69.8.
Puzzle XXX
. 6 . | 2 3 . | 1 5 9 . 3 . | 1 5 . | 8 . . 1 . 5 | 6 . 8 | 3 2 . -------+-------+------- 7 . . | 5 . 6 | 9 3 . . 4 . | 3 . 1 | . . . 6 . 3 | . 8 . | . . 2 -------+-------+------- . . . | 8 . 2 | . . 3 3 2 1 | . . 5 | . . . . . 6 | 4 . 3 | 2 . .
- Puzz
- .6.23.159.3.15.8..1.56.832.7..5.693..4.3.1…6.3.8…2…8.2..3321..5…..64.32..
Puzzle XXXX
. . . | . . . | . . . 5 7 . | 8 9 . | 6 . 1 1 8 . | . . . | 7 5 . -------+-------+------- 3 . . | . . 8 | . . . 9 5 . | 4 . . | . . . . . . | . 2 . | . 7 . -------+-------+------- . . . | 7 . 3 | 8 6 . . 6 . | . . . | 1 . 7 7 . . | . . 9 | . . 2
- Puzz
- ………57.89.6.118….75.3….8…95.4………2..7….7.386..6….1.77….9..2
Swordfish Puzzles
Puzzle 21
9 . 1 | . . . | 4 . 6 . . . | 8 . . | . 5 . 6 . . | . 5 . | . . 3 -------+-------+------- . . . | 7 . 4 | . 3 . 4 . 9 | . . . | . . . . 2 . | 6 . . | . . . -------+-------+------- 3 . . | . . . | 5 . . . 8 . | 5 . 2 | . 6 . . . . | . . . | 1 . 4
- Puzz
- 9.1…4.6…8…5.6…5…3…7.4.3.4.9…….2.6…..3…..5…8.5.2.6…….1.4
Puzzle 22
4 . 7 | . 8 . | 3 . 2 . 2 . | . . 5 | . . . . . . | . 3 . | . . . -------+-------+------- . 7 . | . . 6 | . 9 . 6 . 1 | . 2 . | 4 . 8 . . . | 3 . . | . . . -------+-------+------- . . 3 | . . . | 8 . . . 4 . | 2 . . | . . . 9 . 6 | . 1 . | 2 . 4
- Puzz
- 4.7.8.3.2.2…5…….3…..7…6.9.6.1.2.4.8…3…….3…8…4.2…..9.6.1.2.4
Puzzle 23
6 . 1 | . . . | 2 . . . . . | 2 . . | . . . 7 . . | . . . | . . 9 -------+-------+------- . 5 . | 1 . 8 | . . . . . . | . 2 . | 1 . . . 8 . | . . . | . 7 . -------+-------+------- 2 . . | . 7 . | 4 . 3 . . . | . . 3 | . 8 . 9 . . | . 6 . | 7 . .
- Puzz
- 6.1…2…..2…..7…….9.5.1.8…….2.1…8…..7.2…7.4.3…..3.8.9…6.7..
Puzzle 24
5 . 3 | . . . | . . 9 . 4 . | . . 5 | . 1 . 8 . 1 | . 7 . | 3 . 4 -------+-------+------- . 3 . | 1 . . | . 2 . 4 . . | . 3 . | 6 . 7 . . . | . . . | . 8 . -------+-------+------- 7 . 9 | . . . | . . 8 . . . | 4 . . | . . . 3 . . | . 5 . | . . .
- Puzz
- 5.3…..9.4…5.1.8.1.7.3.4.3.1…2.4…3.6.7…….8.7.9…..8…4…..3…5….
Puzzle 25
. . 1 | . 7 . | . . . . 6 . | . . 9 | . 2 . 4 . . | . . . | . . 3 -------+-------+------- . 1 . | 8 . 2 | . 9 . . . . | . . . | 5 . . . 9 . | . . 5 | . 8 . -------+-------+------- . . 2 | . 1 . | 6 . . . . . | 2 . 7 | . 5 . 3 . 8 | . . . | . . .
- Puzz
- ..1.7…..6…9.2.4…….3.1.8.2.9…….5…9…5.8…2.1.6…..2.7.5.3.8……
Puzzle 26
. . 2 | . 8 . | 9 . . . 3 . | . . 6 | . 4 . . . . | . . . | . . . -------+-------+------- . 9 . | 4 . 5 | . . . 6 . 8 | . . . | . . . . 2 . | 7 . . | . 9 . -------+-------+------- 1 . 5 | . . . | 6 . . . 4 . | . . 7 | . . . . . 9 | . . . | 1 . .
- Puzz
- ..2.8.9…3…6.4………..9.4.5…6.8…….2.7…9.1.5…6…4…7…..9…1..
Puzzle 27
. . 9 | . . . | 4 . 3 . . . | . . 6 | . . . . . 3 | . . . | 2 . 7 -------+-------+------- . . . | . . 1 | . . . . . 8 | . 4 . | 6 . 2 . . . | 7 . 8 | . 3 . -------+-------+------- 5 . 4 | . 2 . | 8 . 9 . 8 . | . . 5 | . . . 1 . . | . . . | . . .
- Puzz
- ..9…4.3…..6…..3…2.7…..1…..8.4.6.2…7.8.3.5.4.2.8.9.8…5…1……..
Puzzle 28
. . 9 | . 5 . | 6 . 1 . 7 . | . . 9 | . 5 . 1 . . | . . . | 2 . . -------+-------+------- . 8 . | 5 . 3 | . . . . . 1 | . . . | . . 8 . 5 . | . . 4 | . 2 . -------+-------+------- 3 . 8 | . 7 . | . . . . 6 . | 4 . . | . . . . . 7 | . . . | 1 . 2
- Puzz
- ..9.5.6.1.7…9.5.1…..2…8.5.3…..1…..8.5…4.2.3.8.7…..6.4…….7…1.2
Puzzle 29
9 . . | . 2 . | 1 . . . 3 . | . . . | . . . 4 . 2 | . 5 . | 9 . 6 -------+-------+------- . 5 . | 7 . . | . . . 8 . 4 | . . . | . . 2 . 6 . | . . 5 | . 4 . -------+-------+------- 5 . . | . . . | 2 . 8 . . . | . . 8 | . 3 . 6 . . | . 1 . | . . 4
- Puzz
- 9…2.1…3…….4.2.5.9.6.5.7…..8.4…..2.6…5.4.5…..2.8…..8.3.6…1…4
Puzzle 30
. . . | . . . | 6 . . . . . | 1 . 5 | . 7 . . . . | . 3 . | 4 . 9 -------+-------+------- . 2 . | 7 . . | . . . 8 . 9 | . . . | . . 4 . 1 . | . . . | . . . -------+-------+------- 3 . . | . 4 . | . . 5 . 6 . | . . 1 | . 2 . . . 8 | . 6 . | 3 . 1
- Puzz
- ……6…..1.5.7…..3.4.9.2.7…..8.9…..4.1…….3…4…5.6…1.2…8.6.3.1
Jellyfish Puzzles
Puzzle 31
. . 9 | . 6 . | 7 . . . 4 . | 2 . . | . . . 6 . 7 | . 3 . | 2 . 4 -------+-------+------- . . . | . . . | . . . 2 . 8 | . 7 . | . . 3 . . . | 8 . 1 | . 2 . -------+-------+------- 3 . 6 | . . . | . . 5 . . . | . . 3 | . 8 . 8 . . | . 9 . | . . 7
- Puzz
- ..9.6.7…4.2…..6.7.3.2.4………2.8.7…3…8.1.2.3.6…..5…..3.8.8…9…7
Puzzle 32
. 2 . | 4 6 . | . . . 8 . . | . 1 . | . . . 3 . . | . . . | 7 2 . -------+-------+------- . . . | . . 1 | 6 . 4 6 . 2 | . 5 . | . 8 . . . . | . . . | . . . -------+-------+------- . . . | . . . | . 5 8 4 8 . | . . 6 | . 3 2 . 1 5 | . . . | . . .
- Puzz
- .2.46….8…1….3…..72……16.46.2.5..8……………..5848…6.32.15……
Puzzle 33
. . 1 | . . . | . . . 9 4 . | . . . | . 7 2 . . 2 | . . . | 6 . . -------+-------+------- . . . | . 6 . | . . 4 1 5 8 | . 3 . | . . 9 7 . . | . . . | . . . -------+-------+------- 5 . . | 7 . 4 | . . . . . . | 6 9 . | . . 3 . . . | . . . | 2 1 .
- Puzz
- ..1……94…..72..2…6……6…4158.3…97……..5..7.4……69…3……21.
Puzzle 34
. . . | . 9 . | . 7 . 8 . . | . . 4 | . . . . 5 . | 1 . . | 2 . . -------+-------+------- . . . | . . 7 | . 1 . 4 . 8 | . . 5 | . . . . . 2 | . . . | 8 . 9 -------+-------+------- . . 6 | . . . | . . 7 . . 5 | 4 . . | . . 6 7 . . | 3 . . | . 4 5
- Puzz
- ….9..7.8….4….5.1..2…….7.1.4.8..5…..2…8.9..6…..7..54….67..3…45
Puzzle 35
. . 2 | 6 . 1 | . . . . 5 . | . . . | . 4 . . . . | . 8 . | . . . -------+-------+------- 8 3 . | 5 . . | . 1 . . . . | 7 . . | . . . . . . | . 6 . | . . . -------+-------+------- . . 9 | . . 2 | . 7 8 . . 4 | . . . | 1 . . . . 6 | 3 . . | . . 5
- Puzz
- ..26.1….5…..4…..8….83.5…1….7………6……9..2.78..4…1….63….5
Puzzle 36
. . 7 | . . . | 2 . . . . 9 | 1 6 . | . . 3 2 . . | . . . | . . . -------+-------+------- . . . | . 2 . | 5 . 9 . . . | . . 7 | . 8 . . . . | 3 . 6 | . . . -------+-------+------- 7 . . | . . 3 | 6 . . 9 . . | . . . | 8 3 . 6 2 . | . 5 . | 7 . .
- Puzz
- ..7…2….916…32…………2.5.9…..7.8….3.6…7….36..9…..83.62..5.7..
Puzzle 37
. . 2 | 9 . . | 1 . . . 4 8 | . . . | . . . . . . | . . . | 2 . . -------+-------+------- . 2 9 | . . 5 | 7 . . . . . | . . 3 | 6 . 8 . 3 . | . . 2 | . . 9 -------+-------+------- . . . | 2 . . | 9 . 6 4 7 . | 6 . . | . . . . . . | 5 . 4 | . . .
- Puzz
- ..29..1…48…………2…29..57…….36.8.3…2..9…2..9.647.6……..5.4…
Puzzle 38
1 . 2 | . . 3 | 7 . . . . . | 5 . . | . 4 . . 6 . | . . . | . . . -------+-------+------- . . . | . . 4 | 6 5 . 5 9 . | . . . | . . 8 . . 8 | . . . | 2 . . -------+-------+------- . . . | . 8 5 | . 6 . . 8 . | 7 . 1 | 3 . 4 7 . . | 6 . . | . . .
- Puzz
- 1.2..37…..5…4..6…………465.59……8..8…2……85.6..8.7.13.47..6…..
Puzzle 39
. 4 . | . . . | . . . . . . | . 7 9 | . . 3 . 8 6 | 1 . . | 9 . . -------+-------+------- 1 . . | . . . | 5 . . . . . | 6 . . | . 8 . 9 . 5 | . . . | 6 . 7 -------+-------+------- . . . | 8 1 . | 4 . . . . . | . . 7 | . 9 . . 5 . | . 6 . | . . .
- Puzz
- .4………..79..3.861..9..1…..5…..6…8.9.5…6.7…81.4…….7.9..5..6….
Puzzle 40
. 8 . | . . . | . 5 . . . 3 | . . . | . 9 6 . . . | 4 6 3 | . . 1 -------+-------+------- . 9 . | . . . | . 1 8 . . . | . 2 7 | 3 6 5 . . . | . . . | . . . -------+-------+------- 6 . . | . 5 . | . . 4 1 . . | . 3 . | . . . . 5 . | 7 . 4 | . . .
- Puzz
- .8…..5…3….96…463..1.9…..18….27365………6…5…41…3…..5.7.4…
Cool Puzzles
Cool 1
4 . . | . . . | . . 2 . . 3 | . 7 . | 4 . . . 5 . | 9 . 2 | . 3 . -------+-------+------- 9 . . | . . . | . . 7 . 1 . | . 2 . | . 9 . 6 . . | . . . | . . 3 -------+-------+------- . 7 . | 5 . 9 | . 1 . . . 1 | . 6 . | 7 . . 8 . . | . . . | . . 6
- Puzz
- 4…….2..3.7.4…5.9.2.3.9…….7.1..2..9.6…….3.7.5.9.1…1.6.7..8…….6
Chromatic Windmill
- Play (Lite)
- https://tinyurl.com/ymysqubb
- Play (Full)
- https://app.crackingthecryptic.com/MGJ22FHQT6