Mark Zaidelman

Rating history

Weekly performance shows the performance for daily puzzles solved during the corresponding week. It is nominated in universal scoring scale which allows to compare puzzles of different complexity. Rating is a cumulative value which is slowly adjusted every week towards the weekly performance. It shows long-term performance level. See the rating computation rules at help page.

Type performance

893 (57 puzzles)
Double Sudoku
2133 (2 puzzles)
Even/Odd Sudoku
1751 (4 puzzles)
Skyscrapers Sudoku
1685 (2 puzzles)
Diagonal Sudoku
1453 (3 puzzles)
No Touch Sudoku
1381 (3 puzzles)
Antiknight Sudoku
1253 (3 puzzles)
Fortress Sudoku
1154 (3 puzzles)
Difference Sudoku
1089 (5 puzzles)
Odd Sudoku
995 (3 puzzles)
Odd-Even-Big-Small
837 (3 puzzles)
Irregular Sudoku
756 (4 puzzles)
Antidiagonal Sudoku
669 (3 puzzles)
Sudoku
646 (2 puzzles)
Consecutive Sudoku
488 (3 puzzles)
Self-joint Sudoku
450 (4 puzzles)
Pair Sum Sudoku
0 (3 puzzles)
X Sums Sudoku
0 (4 puzzles)
Sudoku Extra Regions
0 (2 puzzles)
Perfect Square Sudoku
0 (1 puzzle)
1058 (38 puzzles)
Easy as ABC
1738 (3 puzzles)
Double Block
1422 (5 puzzles)
Magic Snail
1342 (4 puzzles)
Product Latin Square
1182 (3 puzzles)
Fuzuli
997 (4 puzzles)
Product Skyscrapers
945 (3 puzzles)
Kropki
944 (3 puzzles)
Top Heavy Number Place
939 (3 puzzles)
Skyscrapers
763 (4 puzzles)
Exclusive Skyscrapers
711 (2 puzzles)
Summed Skyscrapers
681 (2 puzzles)
Gapped Skyscrapers
328 (2 puzzles)
1075 (20 puzzles)
Nanro
1684 (3 puzzles)
Chaos
1425 (4 puzzles)
Product Kuromasu
1047 (3 puzzles)
No Touch Sums
899 (2 puzzles)
Ripple Effect
730 (4 puzzles)
Suguru
722 (4 puzzles)
1351 (48 puzzles)
No Four in a Row
2286 (2 puzzles)
Queens
1978 (3 puzzles)
Minesweeper
1822 (3 puzzles)
Hexa Minesweeper
1717 (3 puzzles)
Point a Star
1694 (3 puzzles)
Akari
1635 (4 puzzles)
Lighthouses
1499 (2 puzzles)
Star Battle (Small Regions)
1496 (3 puzzles)
Tents
1396 (3 puzzles)
Knight Battleships
1381 (2 puzzles)
Gaps
1114 (5 puzzles)
Star Battle
996 (3 puzzles)
Battleships
979 (3 puzzles)
Battleships Minesweeper
887 (3 puzzles)
Domino Castle with Sums
661 (3 puzzles)
Clouds
503 (3 puzzles)
1230 (22 puzzles)
Pentomino Division
1630 (4 puzzles)
Tetroscope
1556 (3 puzzles)
Pentomino
1443 (3 puzzles)
Pentomino Fences
1440 (1 puzzle)
LITS
1028 (4 puzzles)
Touching Pentomino
1009 (4 puzzles)
Hungarian Pentomino
648 (3 puzzles)
1291 (62 puzzles)
Every Second Straight
2180 (2 puzzles)
Every Second Turn
1995 (4 puzzles)
Even/Odd Fence
1958 (1 puzzle)
Simple Loop
1958 (3 puzzles)
Masyu
1787 (4 puzzles)
Russian Loop
1784 (4 puzzles)
Hexa Fences
1776 (2 puzzles)
Alternate Loop
1557 (3 puzzles)
Minesweeper Loop
1529 (3 puzzles)
Chat Room
1386 (4 puzzles)
Shortest Segment
1279 (2 puzzles)
Railroad
1267 (2 puzzles)
Four Winds
1219 (3 puzzles)
Country Road
1134 (3 puzzles)
Inturnal
1059 (5 puzzles)
Maxi Loop
1005 (2 puzzles)
Polygraph
870 (2 puzzles)
Fences/Slitherlink
868 (3 puzzles)
Double Back
590 (3 puzzles)
Loop and Bounds
291 (4 puzzles)
Turning Fences
259 (2 puzzles)
Knapp Daneben Slitherlink
1 (1 puzzle)
1016 (15 puzzles)
Snakescope
1743 (2 puzzles)
Passage
1621 (2 puzzles)
Maxi Snake
978 (4 puzzles)
Belarusian Snake
942 (3 puzzles)
Dutch Snake
883 (2 puzzles)
Snake
0 (2 puzzles)
1335 (49 puzzles)
Arrow Web
2058 (3 puzzles)
Hitori
2027 (3 puzzles)
Paint by Hex
1921 (2 puzzles)
Paint by Max
1919 (3 puzzles)
Yin Yang
1613 (3 puzzles)
Battenberg Painting
1605 (3 puzzles)
Easy as Coral
1495 (2 puzzles)
Kuromasu
1450 (4 puzzles)
Tapa
1417 (4 puzzles)
Heyawake
1186 (4 puzzles)
Aquarium
991 (3 puzzles)
Hexa Islands
967 (2 puzzles)
Norinori
801 (3 puzzles)
Nurikabe
799 (3 puzzles)
Cave
781 (3 puzzles)
Aqre
661 (4 puzzles)
1463 (42 puzzles)
Black and white
2286 (3 puzzles)
L-shapes
2182 (3 puzzles)
Domino Hunt
2010 (3 puzzles)
Shikaku
1880 (3 puzzles)
Spiral Galaxies
1861 (3 puzzles)
ABC Division
1493 (3 puzzles)
Slash Pack
1409 (5 puzzles)
Fillomino
1338 (4 puzzles)
Neighbor Areas
1336 (2 puzzles)
Two Apiece
1156 (4 puzzles)
Squares and Rectangles
926 (4 puzzles)
Fo-(Faibu-)seruzu
734 (3 puzzles)
Araf
354 (2 puzzles)
1895 (2 puzzles)
Slalom/Gokigen Naname
1895 (2 puzzles)