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dOubLESHOW
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2
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2
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Puzzle XL
Puzzle XL 2020
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dOubLESHOW
dOubLESHOW
dOubLESHOW 2
dOubLESHOW 3
dOubLESHOW 2x2
dOubLESHOW
2
dOubLESHOW 6
dOubLESHOW 7
dOubLESHOW 2x2x2
dOubLESHOW 3
2
dOubLESHOW 10
Month-long marathons
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Skyline Magic
Slitherlink Expedition
Tetromino Canvas Clash
Other contests
Anniversary duel
6x6 duel
Twentyx 1/2-No numbers
Nikoli month 1/2
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Puzzles by type
Sudokus
Antidiagonal Sudoku
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
Antiknight Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
8x8
6x6
8x8
8x8
6x6
9x9
9x9
9x9
8x8
8x8
8x8
8x8
8x8
9x9
9x9
Consecutive Sudoku
6x6
6x6
8x8
6x6
6x6
6x6
8x8
6x6
6x6
8x8
9x9
9x9
8x8
9x9
8x8
Diagonal Sudoku
4x4
6x6
6x6
6x6
6x6
6x6
6x6
8x8
9x9
6x6
9x9
8x8
9x9
9x9
9x9
9x9
9x9
8x8
8x8
8x8
6x6
9x9
8x8
9x9
8x8
8x8
Difference Sudoku
6x6
6x6
6x6
6x6
9x9
8x8
9x9
Double Sudoku
6x6
6x6
6x6
8x8
6x6
8x8
6x6
6x6
8x8
6x6
8x8
8x8
8x8
Even/Odd Sudoku
6x6
6x6
6x6
8x8
8x8
8x8
8x8
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
Fortress Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
8x8
6x6
6x6
9x9
9x9
9x9
9x9
9x9
Irregular Sudoku
6x6
6x6
9x9
6x6
7x7
6x6
7x7
7x7
7x7
7x7
7x7
8x8
7x7
8x8
9x9
8x8
8x8
7x7
9x9
9x9
No Touch Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
6x6
8x8
8x8
8x8
6x6
6x6
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
6x6
9x9
9x9
Odd Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
8x8
6x6
8x8
9x9
9x9
9x9
9x9
9x9
8x8
6x6
8x8
Odd-Even-Big-Small
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
8x8
Pair Sum Sudoku
6x6
6x6
6x6
6x6
8x8
8x8
9x9
9x9
9x9
9x9
9x9
Perfect Square Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
6x6
8x8
9x9
8x8
6x6
8x8
8x8
9x9
9x9
9x9
9x9
9x9
8x8
Self-joint Sudoku
9x9
9x9
9x9
9x9
9x9
9x9
9x9
Skyscrapers Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
8x8
6x6
6x6
9x9
8x8
9x9
9x9
9x9
Sudoku
6x6
6x6
8x8
8x8
8x8
8x8
8x8
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
Sudoku Extra Regions
6x6
6x6
6x6
6x6
8x8
9x9
9x9
6x6
9x9
9x9
9x9
9x9
9x9
X Sums Sudoku
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
8x8
8x8
8x8
8x8
8x8
8x8
8x8
Other Latin Squares
Double Block
4x4
5x5
5x5
6x6
5x5
6x6
6x6
6x6
6x6
6x6
6x6
7x7
7x7
6x6
7x7
8x8
7x7
8x8
7x7
7x7
7x7
7x7
8x8
8x8
7x7
7x7
8x8
11x11
Easy as ABC
4x4
4x4
4x4
4x4
4x4
4x4
4x4
4x4
4x4
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
6x6
6x6
6x6
5x5
6x6
6x6
6x6
6x6
6x6
5x5
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
7x7
6x6
6x6
7x7
7x7
7x7
7x7
Exclusive Skyscrapers
5x5
5x5
5x5
4x4
5x5
5x5
5x5
5x5
6x6
Fuzuli
5x5
5x5
6x6
5x5
6x6
5x5
6x6
6x6
6x6
6x6
6x6
7x7
6x6
6x6
6x6
6x6
7x7
6x6
7x7
6x6
7x7
7x7
7x7
7x7
Gapped Skyscrapers
4x4
5x5
5x5
5x5
5x5
5x5
6x6
6x6
Kropki
6x6
6x6
6x6
8x8
6x6
6x6
7x7
8x8
8x8
7x7
8x8
8x8
7x7
7x7
16x16
Magic Snail
3x3
5x5
5x5
6x6
5x5
6x6
6x6
6x6
5x5
6x6
5x5
5x5
5x5
7x7
5x5
6x6
5x5
7x7
7x7
6x6
7x7
9x9
11x11
Product Latin Square
5x5
5x5
5x5
6x6
5x5
5x5
6x6
6x6
7x7
7x7
7x7
Product Skyscrapers
5x5
5x5
5x5
5x5
5x5
5x5
5x5
6x6
6x6
Skyscrapers
5x5
5x5
5x5
5x5
5x5
5x5
6x6
5x5
5x5
6x6
5x5
6x6
5x5
6x6
6x6
6x6
6x6
5x5
5x5
5x5
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
6x6
5x5
6x6
6x6
6x6
6x6
5x5
6x6
6x6
6x6
Summed Skyscrapers
5x5
5x5
5x5
5x5
5x5
5x5
6x6
6x6
Top Heavy Number Place
6x6
6x6
6x6
6x6
7x7
6x6
6x6
7x7
6x6
7x7
7x7
7x7
8x8
9x9
8x8
11x11
12x12
Number Placement Puzzles
Chaos
5x5
5x5
6x6
7x7
6x6
6x6
6x6
8x8
6x6
6x6
6x6
8x8
7x7
8x8
7x7
13x13
Nanro
8x8
8x8
8x8
10x10
9x10
10x10
9x9
9x9
10x10
10x10
20x20
No Touch Sums
7x7
7x7
8x9
7x7
9x9
8x7
9x8
9x9
9x8
8x8
9x9
8x8
15x15
Product Kuromasu
7x7
7x7
7x7
7x7
7x7
8x8
7x7
8x8
8x8
8x8
7x7
8x8
Ripple Effect
6x6
6x6
7x7
7x7
7x7
7x7
7x7
6x6
7x7
6x6
6x7
9x9
8x8
8x8
8x8
9x9
6x8
7x7
8x8
7x7
8x8
7x7
13x13
7x7
Suguru
6x6
5x5
7x6
7x7
7x7
7x7
6x6
7x7
7x7
6x8
7x7
8x8
7x9
8x8
6x6
6x6
7x7
7x7
7x7
8x8
10x10
9x9
8x8
9x9
13x13
15x15
Object Placement Puzzles
Akari
6x6
6x6
7x7
7x7
9x9
9x9
10x10
9x9
9x9
8x8
9x9
8x8
10x10
7x9
9x11
8x8
8x9
9x9
9x9
10x10
10x10
9x9
10x10
12x10
10x10
10x10
10x10
12x12
10x10
17x17
12x12
Battleships
6x6
9x9
15x4
6x6
8x9
9x9
10x10
9x8
9x9
9x9
7x10
9x9
8x9
15x6
9x7
Battleships Minesweeper
6x6
9x9
9x9
8x9
9x9
8x8
9x9
11x10
9x9
10x10
8x8
9x9
10x10
Clouds
6x5
6x6
8x6
8x6
8x8
8x8
8x8
10x8
10x10
10x10
10x10
10x10
8x8
10x10
10x10
10x8
10x8
10x8
9x9
9x9
10x9
9x9
9x9
9x9
9x9
10x10
9x11
10x9
10x10
11x11
10x10
10x10
9x9
10x10
11x11
10x10
11x11
10x10
9x9
15x15
Domino Castle with Sums
8x6
8x6
7x11
9x6
13x6
8x8
8x6
10x9
10x8
10x7
6x10
10x8
14x13
Gaps
9x9
9x9
9x9
10x10
9x9
10x10
8x8
10x10
10x10
9x9
9x9
9x9
10x10
11x11
9x9
10x10
13x13
12x12
10x10
11x11
9x9
10x10
11x11
10x10
9x9
12x12
12x12
Hexa Minesweeper
4x4
4x4
5x4
5x4
5x5
4x4
4x4
5x5
6x6
6x5
5x5
5x5
5x5
9x9
Knight Battleships
6x6
7x7
8x8
9x9
8x8
9x9
15x4
10x5
11x13
9x9
8x8
7x7
9x9
9x9
Lighthouses
8x8
8x10
9x9
10x9
10x10
10x10
8x8
9x9
9x9
9x9
8x8
9x9
11x11
12x12
16x16
Minesweeper
6x8
7x7
8x8
8x10
9x9
8x8
9x9
8x8
8x8
9x9
7x7
9x9
7x7
8x8
9x9
9x9
10x10
7x7
10x10
10x10
11x11
9x9
9x9
12x10
9x9
17x17
No Four in a Row
11x12
8x8
7x9
10x10
8x8
7x9
9x9
10x10
8x10
11x9
10x10
10x8
11x11
10x10
16x16
Point a Star
7x7
7x7
8x8
6x8
9x10
10x8
9x9
8x8
9x9
8x8
8x8
9x9
8x8
9x9
8x8
8x8
8x8
10x10
8x11
9x9
8x8
16x16
Queens
5x5
5x5
6x6
6x6
5x5
6x6
6x6
5x6
5x5
6x6
6x6
6x6
6x6
6x6
4x7
6x6
7x7
6x6
8x8
13x13
Star Battle
8x8
9x9
9x9
9x9
9x9
10x10
10x10
10x10
9x9
10x10
11x11
10x10
8x8
10x10
10x10
10x10
10x10
10x10
10x10
10x10
10x10
10x10
10x10
10x10
Star Battle (Small Regions)
9x9
9x9
9x9
10x10
9x9
10x10
9x9
10x10
9x9
9x9
10x10
10x10
18x18
14x14
Tents
8x8
9x9
9x8
9x9
9x9
9x9
9x9
11x11
10x10
9x9
9x9
11x11
10x9
10x10
10x10
19x19
Pentomino/Tetromino puzzles
Hungarian Pentomino
10x10
8x8
12x12
10x10
9x12
12x12
14x10
12x12
12x12
12x12
12x12
12x12
12x12
17x17
12x12
Inverse LITS
8x8
8x8
9x9
10x10
9x9
10x10
LITS
8x8
10x10
8x8
8x8
9x10
10x10
10x10
10x10
10x10
10x10
9x9
10x10
10x10
10x10
10x10
10x10
10x10
12x8
10x10
10x10
7x16
10x10
14x10
10x10
10x10
12x12
10x10
10x10
11x11
11x11
10x10
10x10
11x11
10x10
11x11
10x10
10x10
10x10
19x19
14x14
13x19
LITS+
10x10
8x8
8x8
9x7
9x11
11x11
Pentomino
9x9
11x10
8x8
10x10
12x12
10x10
12x12
12x12
10x10
12x12
12x12
12x12
12x12
Pentomino Division
10x10
8x10
10x10
5x9
10x8
10x10
15x15
10x10
Pentomino Fences
9x9
7x7
12x12
12x12
12x12
12x12
12x12
SLICY
5x5
5x5
6x5
4x4
6x6
5x5
8x8
Tetroscope
9x7
9x7
9x7
10x7
10x7
10x7
9x7
8x8
8x8
9x7
9x7
10x7
9x8
10x7
Touching Pentomino
8x7
11x11
10x11
11x11
8x9
9x13
12x11
11x11
10x12
10x12
8x12
11x11
15x8
16x14
11x13
12x10
Line Drawing Puzzles
Alternate Loop
4x4
6x6
6x6
6x6
8x8
8x8
8x8
8x8
6x8
8x8
8x9
10x10
8x8
9x8
8x8
10x12
10x10
10x10
10x10
14x14
Chat Room
7x7
7x5
9x9
9x9
7x8
8x8
8x8
9x10
8x8
7x9
8x8
9x9
9x9
8x8
7x7
10x10
10x10
9x9
10x10
9x9
Country Road
7x7
9x9
7x7
8x8
7x7
9x9
9x8
10x10
12x12
10x10
9x9
10x10
Double Back
6x6
8x8
8x8
9x8
8x8
8x8
8x8
8x8
8x8
10x10
9x12
8x10
Even/Odd Fence
3x4
4x4
4x5
5x5
4x8
5x5
7x7
Every Second Straight
6x6
8x9
9x8
10x8
8x8
8x8
10x9
9x8
10x10
10x10
10x10
10x10
10x9
Every Second Turn
6x6
6x6
9x10
10x6
8x8
8x8
8x8
8x8
10x8
10x9
10x11
10x9
10x9
10x10
8x10
10x10
10x10
10x10
10x10
10x10
10x10
18x18
Fences/Slitherlink
4x4
5x5
6x6
5x5
7x7
5x5
5x5
7x7
6x6
6x9
6x6
7x7
6x6
9x9
6x6
6x6
6x6
8x8
7x7
10x10
9x9
7x7
10x10
9x9
10x10
10x10
10x10
7x7
10x10
10x10
12x12
10x10
14x14
8x8
10x10
10x10
Four Winds
8x8
8x8
7x8
7x9
10x10
8x8
9x9
7x9
8x8
9x9
9x9
9x9
15x15
14x14
Hexa Fences
3x3
3x3
4x5
5x3
4x4
4x4
4x4
3x5
4x3
4x4
4x4
4x4
5x5
4x4
4x4
9x2
5x5
5x4
5x5
5x5
5x5
8x8
Inturnal
7x7
6x6
6x7
8x10
9x9
9x9
9x9
9x9
19x19
Knapp Daneben Slitherlink
5x5
4x5
7x7
3x6
4x6
5x5
8x7
5x6
5x5
Loop and Bounds
8x8
8x8
8x8
9x8
10x10
8x8
10x10
8x8
10x10
10x10
8x8
10x10
16x16
Masyu
8x8
6x8
8x8
9x9
9x9
9x9
12x8
10x10
7x10
10x10
9x9
9x9
10x10
12x10
9x9
10x10
10x10
8x8
10x10
10x10
15x15
9x10
13x13
10x12
Maxi Loop
6x6
6x6
8x8
8x8
8x8
8x8
8x8
8x8
8x8
7x8
8x10
7x10
10x10
10x10
10x10
16x16
Minesweeper Loop
7x7
7x7
9x9
9x9
10x10
9x9
9x9
10x10
9x9
10x10
8x8
8x8
10x10
10x10
11x11
16x16
12x12
Polygraph
4x4
5x5
5x5
6x8
8x8
7x7
7x7
10x12
9x9
Railroad
7x7
8x8
8x10
10x9
9x9
9x9
9x9
9x9
9x9
9x9
9x9
10x10
Ring Ring
7x7
9x9
10x10
13x11
13x13
Russian Loop
6x6
8x8
9x8
9x8
10x10
10x9
8x8
6x10
10x10
10x9
9x10
10x10
10x10
12x12
Shortest Segment
8x8
6x6
6x6
10x10
8x8
8x8
9x8
10x10
10x9
10x10
10x9
10x8
10x10
Simple Loop
7x7
8x8
9x9
9x9
10x10
10x10
8x10
8x8
9x9
10x10
10x10
10x10
10x10
10x10
11x11
11x11
11x11
10x11
10x10
9x9
10x10
12x12
11x11
Turning Fences
5x5
6x6
9x6
7x7
6x6
7x7
9x9
9x9
Snake Drawing Puzzles
Belarusian Snake
7x6
8x8
9x9
8x8
7x9
7x7
10x10
7x12
10x10
8x8
9x9
10x10
10x10
9x9
10x10
12x12
9x9
13x13
Dutch Snake
8x8
13x7
10x10
9x9
8x8
10x10
9x9
9x9
9x9
9x9
5x7
10x10
10x10
10x10
12x12
Maxi Snake
6x6
6x6
7x7
7x7
9x9
8x8
8x8
9x9
9x9
9x6
10x10
9x9
9x9
9x9
9x9
9x9
9x9
11x11
10x9
7x15
10x10
10x10
10x10
12x12
17x17
Passage
8x8
10x10
8x8
9x9
9x9
15x9
9x10
9x9
10x10
12x9
9x9
10x13
12x10
10x10
9x9
16x16
Snake
9x6
8x8
9x9
9x9
9x9
9x9
10x10
10x10
8x8
10x10
11x11
10x10
12x10
10x10
7x10
9x9
7x9
10x10
8x10
13x13
Snakescope
6x6
7x7
8x8
8x8
9x9
8x8
9x9
11x9
9x9
9x9
10x10
9x9
11x9
10x8
18x18
Painting Puzzles
Aqre
7x6
8x8
8x8
8x8
9x8
8x8
10x10
Aquarium
9x9
9x8
8x8
9x9
8x8
9x9
8x8
10x8
10x9
9x9
9x8
10x10
10x7
Arrow Web
3x3
4x4
4x4
5x5
5x4
5x5
5x5
4x4
5x5
5x5
6x6
5x7
6x6
6x6
7x7
6x6
8x8
Battenberg Painting
6x6
6x9
8x8
8x8
7x7
7x7
7x6
7x7
7x7
8x8
8x8
8x7
7x7
8x8
7x7
8x8
9x9
Cave
7x7
9x9
7x7
9x9
9x9
14x11
9x9
10x10
7x7
9x9
10x10
9x9
8x8
9x9
9x9
10x10
10x12
10x10
13x13
9x9
9x9
10x12
7x12
10x10
Choco Banana
9x9
6x7
8x10
8x10
10x10
8x8
Easy as Coral
4x4
4x4
5x5
5x5
5x5
6x6
7x7
7x7
8x8
7x7
7x7
7x7
7x7
7x7
7x7
7x7
7x7
6x6
9x10
10x10
9x9
9x9
8x8
9x11
8x8
9x9
8x8
13x9
9x9
9x9
8x8
10x10
7x7
9x9
9x9
Hexa Islands
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
5x5
Heyawake
6x6
10x10
6x6
8x8
10x10
8x8
8x8
7x7
6x6
9x9
10x10
7x7
10x10
7x11
10x10
10x10
15x15
Hitori
7x7
6x6
7x7
7x7
9x9
6x8
9x9
8x8
8x8
7x7
8x8
8x8
7x7
9x9
9x9
10x10
9x9
8x8
10x10
9x9
9x9
8x9
9x9
12x12
Kuromasu
8x8
7x7
6x6
8x8
8x8
7x8
10x10
9x9
8x8
5x6
6x8
6x6
10x10
14x14
10x10
7x7
16x16
11x11
Norinori
7x7
8x8
8x8
7x7
8x8
10x10
9x9
7x8
9x9
9x9
9x9
10x10
10x10
15x15
Nurikabe
5x5
6x7
6x6
8x8
10x10
9x9
9x9
8x8
9x9
10x10
10x11
10x10
10x10
9x9
10x10
10x10
10x10
9x9
10x10
9x9
9x9
10x10
10x10
10x10
20x20
Paint by Hex
2x2
3x3
3x3
3x3
5x4
3x3
4x5
4x4
4x3
4x4
6x5
5x5
4x4
5x5
4x5
5x5
4x4
5x5
5x5
Paint by Max
5x5
6x6
6x6
6x6
6x6
7x7
7x7
7x7
7x7
8x8
7x7
9x7
7x9
7x8
8x8
8x8
8x8
8x8
8x8
7x7
8x8
7x9
12x12
10x10
14x14
13x13
9x9
Tapa
6x6
8x8
7x7
9x9
8x11
10x10
7x7
9x9
10x10
10x10
8x10
9x9
10x10
10x10
10x10
10x10
9x9
10x10
10x10
11x11
10x10
10x10
12x12
9x9
10x10
10x10
10x10
10x10
10x12
10x10
9x9
10x10
9x9
10x10
10x10
12x12
8x8
10x10
10x10
10x10
10x10
8x8
10x10
10x10
11x11
10x10
10x10
10x10
10x10
10x10
12x12
10x10
10x10
12x12
10x10
10x10
17x17
11x11
10x10
15x15
10x10
9x9
15x14
12x12
18x18
22x22
Yin Yang
5x5
5x5
5x5
6x6
7x7
7x7
7x7
8x8
7x7
6x6
9x9
6x10
8x8
7x12
6x6
7x7
9x11
8x8
8x8
8x8
8x7
9x11
9x9
10x10
7x9
8x8
10x10
8x8
7x7
12x12
12x12
17x17
Region Division Puzzles
ABC Division
5x6
8x5
7x7
8x8
10x7
8x9
10x10
10x6
8x8
6x8
6x8
8x8
7x10
6x9
7x10
9x9
9x10
10x10
15x12
12x14
Araf
8x8
8x8
9x9
9x9
8x8
10x10
9x9
8x8
10x10
10x10
9x9
14x14
10x10
Black and white
6x6
6x6
8x8
5x7
8x8
9x10
9x10
8x8
7x7
10x10
10x10
9x9
8x10
Domino Hunt
6x5
7x6
7x10
7x6
7x6
7x6
7x9
8x8
7x10
7x8
8x8
7x9
7x8
7x6
10x11
Double Choco
6x6
6x6
7x8
Fillomino
8x8
10x10
7x7
10x10
10x10
9x9
10x10
10x10
10x10
10x10
10x10
Fo-(Faibu-)seruzu
6x6
6x6
6x6
10x8
8x8
6x6
8x8
8x8
8x8
10x10
10x10
10x8
8x8
10x8
10x10
10x10
10x10
18x15
10x10
L-shapes
7x7
8x8
7x7
8x8
7x7
8x8
9x9
7x7
8x10
7x8
7x9
9x9
10x10
9x9
9x9
9x11
9x9
11x11
12x15
Neighbor Areas
7x7
6x6
6x6
6x6
6x6
9x5
6x6
8x6
6x6
9x9
8x8
8x8
Shikaku
4x4
8x8
9x9
11x11
10x10
8x8
9x9
9x10
11x12
10x10
11x11
8x8
10x10
10x10
10x10
12x12
Slash Pack
5x5
6x6
8x8
8x8
9x9
9x9
10x10
9x11
18x18
10x10
Spiral Galaxies
7x6
8x8
8x8
7x9
9x9
8x8
9x9
10x10
10x10
8x8
9x9
10x10
9x9
10x10
10x10
11x11
9x9
10x10
13x12
12x12
Squares and Rectangles
5x5
8x8
5x5
9x9
8x9
10x10
5x5
10x10
7x7
Two Apiece
6x6
6x8
6x7
8x5
6x6
6x6
6x6
6x6
6x8
6x6
6x8
10x6
6x6
10x10
Other Puzzles
Slalom/Gokigen Naname
7x7
7x7
7x7
8x8
8x8
7x7
9x9
7x7
8x8
9x9
10x10
9x9
15x15
12x12
Stars show the aproximate puzzle difficulty:
- 30 seconds solving time for an expert
- 75 seconds solving time for an expert
- 4 minutes solving time for an expert
- 10 minutes solving time for an expert
- 25 minutes solving time for an expert