World Sudoku & Puzzle Championship 2026

Shifu Nakazawa

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Real name Shifu Nakazawa
Puzzle Blog
Country Japan
Date registered2024-03-15 5:17 PM
Last logon2026-06-14 4:57 PM
Total posts
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Puzzle Ratings 206 480.3603 175 519.5013 History
LMI Sudoku Ratings 168 584.334 164 592.8005 History

Puzzle TestSHI's RankSHI's ScoreTest Max ScorePSRSNSW
2026R4 (Shading & Loops) 185 21 132.8 294 285 292 1
2026R3 (OP & Regions) 176 37.2 125.3 413 400 410 1
2026R2 (MII & Number Placement) 177 46.7 132.8 441 398 430 1
2026R1 (Classics) 148 53.4 132.033 558 627 576 0.8
2025R5 (Word & Casual) 155 48.7 119.8 490 488 490 0.8
2025R4 (Shading & Regions) 145 68 137.1 502 507 503 0.7
2025R3 (Numbers & MII) 185 31 123.417 378 390 381 0.7
2025R2 (Loop & OP) 155 39.8 124.25 511 528 515 0.6
2025R1 (Classics) 182 49.6 134.883 515 533 519 0.6
2024R6 (Snake & Casual) 132 58 131.033 494 486 492 0.6
2024R5 (Shading & Regions) 128 47.6 129.983 532 584 545
2024R4 (Word & OP) 196 37.6 129.467 357 337 352
April Contest 2024 67 5 98
2024R3 (Evergreens & MII) 137 44 124.95 513 523 516
Sudoku TestSHI's RankSHI's ScoreTest Max ScorePSRSNSW
2026R4 (Irregular & Converse) 166 45.5 140.35 470 467 469 1
2026R3 (OE & Hybrids) 134 53.6 140.35 540 624 561 1
2026R2 (Math & Outside) 127 68 141.283 635 720 656 1
2026R1 (Standard & Neighbours) 116 57.4 138.433 615 753 649 0.8
2025R4 (Outside & Hybrids) 112 53 140.533 564 666 589 0.8
2025R3 (Odd Even & Irregular) 133 77 155.533 585 642 599 0.7
2025R2 (Math & Neighbours) 191 54 149.7 520 541 525 0.7
2025R1 (Standard & Converse) 199 54 154.75 553 607 567 0.6
2024R4 (Outside & Converse) 165 33 125.95 516 526 518 0.6
2024R3 (Math & Neighbours) 170 44 138.217 522 552 529

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