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

Boyan Dong

Player Profile : boyan
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Real name Boyan Dong
Puzzle Blog
Country China
Date registered2024-12-26 12:23 PM
Last logon2026-07-12 8:24 AM
Total posts0 
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Puzzle Ratings 127 601.7065 127 601.7065 History
LMI Sudoku Ratings 89 688.2224 89 688.2224 History

Puzzle Ratings HistoryRatingsRank
2026R4 (Shading & Loops) 601.7065 127
2026R3 (OP & Regions) 576.5527 145
2026R2 (MII & Number Placement) 576.4313 146
2026R1 (Classics) 560.4313 150
2025R5 (Word & Casual) 536.293 164
2025R4 (Shading & Regions) 501.6706 197
2025R3 (Numbers & MII) 464.8282 221
2025R2 (Loop & OP) 395.2935 278
2025R1 (Classics) 305.8018 354
Puzzle Testboyan's Rankboyan's ScoreTest Max ScorePSRSNSW
2026R5 (Word & Casual) 109 42 0
2026R4 (Shading & Loops) 66 60.7 132.8 629 747 658 1
2026R3 (OP & Regions) 124 50.6 125.3 535 575 545 1
2026R2 (MII & Number Placement) 92 74.6 132.8 635 685 648 1
2026R1 (Classics) 104 64.9 132.033 623 739 652 0.8
2025R5 (Word & Casual) 87 67 119.8 623 710 645 0.8
2025R4 (Shading & Regions) 116 78.8 137.1 580 604 586 0.7
2025R3 (Numbers & MII) 154 39.8 123.417 485 483 485 0.7
2025R2 (Loop & OP) 195 32.4 124.25 427 410 423 0.6
2025R1 (Classics) 183 49 134.883 511 530 516 0.6
Sudoku Testboyan's Rankboyan's ScoreTest Max ScorePSRSNSW
2026R4 (Irregular & Converse) 41 86.4 140.35 707 868 747 1
2026R3 (OE & Hybrids) 54 80 140.35 680 852 723 1
2026R2 (Math & Outside) 46 88 141.283 734 901 776 1
2026R1 (Standard & Neighbours) 58 81.2 138.433 728 877 765 0.8
2025R4 (Outside & Hybrids) 147 44.5 140.533 521 558 530 0.8
2025R3 (Odd Even & Irregular) 175 65.2 155.533 522 533 525 0.7
2025R2 (Math & Neighbours) 76 87 149.7 686 817 718 0.7
2025R1 (Standard & Converse) 174 58.7 154.75 574 657 595 0.6

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