SM 2026 R4 - Irregular & Converse (1st - 9th May) Score •Discuss
PR 2026 R5 - Word & Casual (16th - 22nd May) •Discuss
World Sudoku & Puzzle Championship 2026

Nathan Chiu

Player Profile : BlackBird_6
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Real name Nathan Chiu
Puzzle Blog
Country Canada
Date registered2025-02-08 8:17 AM
Last logon2026-05-12 1:41 PM
Total posts0 
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Puzzle Ratings 225 455.9944 218 465.7609 History
LMI Sudoku Ratings 129 629.9507 129 629.9507 History

Puzzle TestBlackBird_6's RankBlackBird_6's ScoreTest Max ScorePSRSNSW
2025R5 (Word & Casual) 137 53.7 0
2025R3 (Numbers & MII) 136 43 123.417 512 538 519 1
2025R2 (Loop & OP) 187 34 124.25 448 435 445 1
2025R1 (Classics) 214 43.8 134.883 466 454 463 0.8
Sudoku TestBlackBird_6's RankBlackBird_6's ScoreTest Max ScorePSRSNSW
2025R4 (Outside & Hybrids) 78 61 140.533 603 767 644 1
2025R3 (Odd Even & Irregular) 113 86.6 155.533 635 694 650 1
2025R2 (Math & Neighbours) 124 70.7 149.7 604 704 629 1
2025R1 (Standard & Converse) 181 57.8 154.75 570 643 588 0.8

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