World Sudoku & Puzzle Championship 2026
ISC & SM and IPC & PR 2026

Tatyana Marchenko

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Real name Tatyana Marchenko
Puzzle Blog
Country Russia
Date registered2025-02-26 10:25 AM
Last logon2026-08-07 9:23 PM
Total posts
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Puzzle Ratings 475 153.0768 451 186.9251 History
LMI Sudoku Ratings 660 143.6884 626 155.1997 History

Puzzle Ratings HistoryRatingsRank
2026R4 (Shading & Loops) 153.0768 475
2026R3 (OP & Regions) 160.3254 489
2026R2 (MII & Number Placement) 173.1785 483
2026R1 (Classics) 186.9251 459
2025R5 (Word & Casual) 153.7611 451
2025R4 (Shading & Regions) 153.3037 493
2025R3 (Numbers & MII) 118.0605 549
2025R2 (Loop & OP) 58.49333 617
Puzzle TestListopad's RankListopad's ScoreTest Max ScorePSRSNSW
2026R4 (Shading & Loops) 222 9.3 132.8 130 149 135 1
2026R3 (OP & Regions) 261 9.6 125.3 107 109 107 1
2026R2 (MII & Number Placement) 262 12.6 132.8 119 121 119 1
2026R1 (Classics) 293 21.9 132.033 255 274 260 0.8
2025R4 (Shading & Regions) 254 27.4 137.1 202 149 189 0.7
2025R3 (Numbers & MII) 262 16 123.417 195 141 182 0.7
2025R2 (Loop & OP) 299 7.1 124.25 94 114 99 0.6
Sudoku TestListopad's RankListopad's ScoreTest Max ScorePSRSNSW
2026R3 (OE & Hybrids) 325 12 140.35 130 100 123 1
2025R3 (Odd Even & Irregular) 329 21.7 155.533 178 123 164 0.7
2025R2 (Math & Neighbours) 341 21.5 149.7 215 173 204 0.7

PS = Prorated Score (Score based on players's score, median score and top score in the test)
RS = Rank Score (Score based on player's rank in the test)
NS = Normalized Score (.75 * PS + .25 * RS)
W = Weight of the test
Click here for detailed logic of LMI Player Rating System v2.0