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

988 (58 puzzles)
Even/Odd Sudoku
1623 (3 puzzles)
Odd Sudoku
1467 (4 puzzles)
Consecutive Sudoku
1448 (3 puzzles)
Irregular Sudoku
1399 (3 puzzles)
Antiknight Sudoku
1344 (4 puzzles)
Fortress Sudoku
1222 (3 puzzles)
Sudoku Extra Regions
1092 (5 puzzles)
Sudoku
1009 (3 puzzles)
No Touch Sudoku
998 (3 puzzles)
X Sums Sudoku
977 (3 puzzles)
Antidiagonal Sudoku
952 (3 puzzles)
Double Sudoku
744 (4 puzzles)
Pair Sum Sudoku
734 (4 puzzles)
Diagonal Sudoku
651 (4 puzzles)
Odd-Even-Big-Small
556 (3 puzzles)
Perfect Square Sudoku
508 (3 puzzles)
Skyscrapers Sudoku
0 (3 puzzles)
1110 (21 puzzles)
Kropki
1672 (1 puzzle)
Fuzuli
1483 (2 puzzles)
Top Heavy Number Place
1469 (2 puzzles)
Double Block
1378 (4 puzzles)
Product Latin Square
1060 (4 puzzles)
Magic Snail
937 (2 puzzles)
Skyscrapers
715 (4 puzzles)
Easy as ABC
625 (2 puzzles)
520 (18 puzzles)
Product Kuromasu
912 (4 puzzles)
Chaos
897 (5 puzzles)
Ripple Effect
315 (3 puzzles)
Suguru
97 (3 puzzles)
No Touch Sums
0 (3 puzzles)
1181 (63 puzzles)
Queens
1737 (2 puzzles)
Minesweeper
1725 (3 puzzles)
Tents
1714 (5 puzzles)
Hexa Minesweeper
1529 (4 puzzles)
Point a Star
1497 (4 puzzles)
Star Battle (Small Regions)
1471 (5 puzzles)
No Four in a Row
1426 (6 puzzles)
Lighthouses
1325 (3 puzzles)
Akari
1307 (4 puzzles)
Domino Castle with Sums
1006 (2 puzzles)
Knight Battleships
975 (3 puzzles)
Battleships
878 (4 puzzles)
Gaps
837 (6 puzzles)
Clouds
688 (4 puzzles)
Battleships Minesweeper
634 (5 puzzles)
Star Battle
200 (3 puzzles)
1061 (20 puzzles)
Touching Pentomino
1476 (4 puzzles)
LITS
1260 (3 puzzles)
Tetroscope
1254 (7 puzzles)
Hungarian Pentomino
938 (2 puzzles)
Pentomino
219 (4 puzzles)
1077 (60 puzzles)
Every Second Turn
2144 (2 puzzles)
Alternate Loop
1887 (4 puzzles)
Simple Loop
1842 (3 puzzles)
Four Winds
1610 (5 puzzles)
Hexa Fences
1593 (3 puzzles)
Russian Loop
1587 (4 puzzles)
Every Second Straight
1324 (4 puzzles)
Minesweeper Loop
1182 (2 puzzles)
Masyu
1158 (4 puzzles)
Country Road
1062 (5 puzzles)
Maxi Loop
991 (4 puzzles)
Loop and Bounds
513 (3 puzzles)
Railroad
477 (4 puzzles)
Chat Room
454 (3 puzzles)
Fences
429 (4 puzzles)
Double Back
1 (2 puzzles)
Shortest Segment
0 (4 puzzles)
942 (15 puzzles)
Snakescope
1775 (3 puzzles)
Passage
1589 (3 puzzles)
Dutch Snake
1150 (3 puzzles)
Snake
197 (3 puzzles)
Maxi Snake
1 (2 puzzles)
Belarusian Snake
0 (1 puzzle)
993 (52 puzzles)
Battenberg Painting
1581 (3 puzzles)
Hitori
1576 (6 puzzles)
Arrow Web
1318 (3 puzzles)
Paint by Hex
1288 (3 puzzles)
Yin Yang
1198 (4 puzzles)
Norinori
1150 (4 puzzles)
Aquarium
1118 (4 puzzles)
Paint by Max
991 (4 puzzles)
Nurikabe
923 (3 puzzles)
Heyawake
844 (3 puzzles)
Tapa
801 (3 puzzles)
Hexa Islands
635 (2 puzzles)
Kuromasu
471 (5 puzzles)
Cave
227 (2 puzzles)
Easy as Coral
1 (3 puzzles)
1027 (31 puzzles)
L-shapes
1967 (2 puzzles)
Domino Hunt
1676 (3 puzzles)
Fo-(Faibu-)seruzu
1615 (3 puzzles)
Two Apiece
1500 (5 puzzles)
Black and white
1183 (3 puzzles)
ABC Division
890 (2 puzzles)
Araf
685 (6 puzzles)
Spiral Galaxies
483 (1 puzzle)
Neighbor Areas
206 (3 puzzles)
Shikaku
1 (3 puzzles)
2065 (5 puzzles)
Slalom
2065 (5 puzzles)