France Open 2026 - Sudoku R1 (13thth - 17thth June) starts in 21 hours 14 minutes •Discuss
France Open 2026 - Sudoku R2 (13thth - 17thth June) starts in 22 hours 54 minutes •Discuss
France Open 2026 - Puzzle R1 (13thth - 17thth June) starts in 25 hours 14 minutes •Discuss
France Open 2026 - Puzzle R2 (13thth - 17thth June) starts in 27 hours 4 minutes •Discuss
World Sudoku & Puzzle Championship 2026

Kaneko Akihiro

Player Profile : SigmaArf
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Real name Kaneko Akihiro
Puzzle Blog
Country Japan
Date registered2024-05-30 10:03 AM
Last logon2026-04-22 10:35 AM
Total posts0 
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Puzzle Ratings 163 546.9066 154 557.4028 History
LMI Sudoku Ratings 272 464.5524 270 480.9599 History

Puzzle TestSigmaArf's RankSigmaArf's ScoreTest Max ScorePSRSNSW
2026R4 (Shading & Loops) 119 39 132.8 517 542 523 1
2026R3 (OP & Regions) 139 47.2 125.3 514 523 516 1
2026R2 (MII & Number Placement) 115 64.2 132.8 570 606 579 1
2026R1 (Classics) 187 45.8 132.033 516 533 520 0.8
April Contest 2025 101 0 0
2025R4 (Shading & Regions) 128 73.4 137.1 541 562 546 0.7
2025R3 (Numbers & MII) 150 40.8 123.417 498 493 496 0.7
2024R6 (Snake & Casual) 69 82.5 131.033 665 725 680 0.6
Sudoku TestSigmaArf's RankSigmaArf's ScoreTest Max ScorePSRSNSW
2026R3 (OE & Hybrids) 231 34 140.35 370 350 365 1
2026R2 (Math & Outside) 194 50 141.283 545 573 552 1
2026R1 (Standard & Neighbours) 221 36 138.433 513 530 517 0.8
2025R2 (Math & Neighbours) 238 42 149.7 420 427 422 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