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

JunSeo Ha

Player Profile : mathjuny
Send this user a private message
Real name JunSeo Ha
Puzzle Blog
Country South Korea
Date registered2017-10-25 4:21 PM
Last logon2026-06-24 7:14 AM
Total posts0 
Rank
LMI RatingsCurrent RankCurrent RatingsBest RankBest RatingsRatings History
LMI Puzzle Ratings 135 590.815 70 720.0869 History
LMI Sudoku Ratings 77 714.7191 60 756.3943 History

Sudoku Ratings HistoryRatingsRank
2026R4 (Irregular & Converse) 714.7191 77
2026R3 (OE & Hybrids) 756.3943 60
2026R2 (Math & Outside) 685.3299 94
2026R1 (Standard & Neighbours) 475.4294 278
2025R4 (Outside & Hybrids) 107.0612 698
2025R3 (Odd Even & Irregular) 281.8018 485
2025R2 (Math & Neighbours) 412.9463 342
2025R1 (Standard & Converse) 515.8934 240
HNY2025 587.0837 169
2024R4 (Outside & Converse) 580.0447 182
2024R3 (Math & Neighbours) 585.6199 184
2024R2 (Odd Even & Hybrids) 506.2505 255
2024R1 (Standard & Irregular) 534.5701 213
HNY2024 549.2183 192
2023R4 (Neighbours & Converse) 599.3409 153
2023R3 (Irregular & Math) 586.4348 166
2023R2 (Outside & Hybrids) 559.2652 186
2023R1 (Standard & Odd Even) 520.1874 217
2022R4 (Math & Irregular) 453.8804 262
2022R3 (Converse & Outside) 513.9656 213
2022R2 (Odd Even & Hybrids) 531.3301 186
2022R1 (Standard & Neighbours) 629.2408 120
Odd Even (SM 2021) 585.2114 145
Hybrids (SM 2021) 579.6736 146
Irregular and Twisted Classics (SM 2021) 577.7344 147
Converse (SM 2021) 575.8941 145
Math (SM 2021) 608.7158 122
Substitution and Neighbours (SM 2021) 624.8998 113
Outside (SM 2021) 624.5685 103
Standard (SM 2021) 550.4186 158
Lockdown Sudoku Test 437.4393 224
Quinze 2 486.0701 191
Twisted Classics and Hybrids (SM2020) 470.4587 204
Mean Minis 477.3902 197
Converse and Odd Even (SM2020) 497.5359 195
Math (SM2020) 488.7173 190
Irregular and Outside (SM2020) 504.2481 180
Substitution and Neighbours (SM 2020) 504.2481 165
Standard (SM 2020) 472.1109 176
Quinze 315.1195 240
Pentakaideca 402.1663 194
Converse & Twisted Classics (SM 19) 409.1241 208
Irregular & Hybrids (SM 19) 407.7945 217
Math (SM 19) 432.5172 206
Substitution & Odd Even (SM 19) 438.9911 197
Outside & Neighbours (SM 19) 478.4557 168
Standard (SM 19) 479.5399 173
Deja Vu 478.9907 184
Enthralling Sudoku 479.9242 194
Irregular & Hybrids (SM 18) 477.585 206
Math (SM 18) 461.2759 216
Odd Even & Substitution (SM 18) 499.9951 189
R19 - WSC Playoffs 540.3174 155
Outside & Neighbours (SM 18) 499.5495 205
Standard (SM 18) 455.0014 252
Converse & Twisted Classics (SM 18) 289.7224 405
Daily Contestsmathjuny's Rankmathjuny's ScoreTest Max Score
Tapa Train 160 1314.46 3151
Puzzle Testmathjuny's Rankmathjuny's ScoreTest Max ScorePSRSNSW
2026R5 (Word & Casual) 29 66.6 0
2026R4 (Shading & Loops) 207 13 132.8 182 209 189 1
2026R3 (OP & Regions) 87 62.4 125.3 608 705 633 1
2026R2 (MII & Number Placement) 39 103.2 132.8 815 869 828 1
2026R1 (Classics) 62 80.6 132.033 711 845 745 0.8
2024R1 (Classics) 143 50 128.45 593 684 616
2023R5 (Casual & Word) 55 64.4 107.517 661 786 692
2023R4 (NP & OP) 51 86.3 128.967 719 808 741
2023R3 (Shading & MII) 129 45.9 134.45 509 521 512
2023R2 (Evergreens & Rule Pool) 133 44.9 127.767 530 580 542
2022R5 (Loops & Shading) 230 3 129.217 44 26 40
2022R4 (Numbers & Puzz.link) 160 26.3 120.383 398 371 391
2022R3 (Regions & Evergreens) 106 48.7 128.517 528 571 539
2022R2 (Casual & Word) 144 33 109.25 473 478 474
2022R1 (Classics) 65 110.417 143.133 778 824 789
PANFOPCWHTTAPA 2 94 128.833 148.717 775 779 776
2023R1 (Classics) 203 40 131.483 426 424 425
Moscow Puzzle Cup 2022 - Part 2 59 164 0
MII & Evergreens (PR 2021) 62 67.8 148.45 578 616 587
Shading (PR 2021) 125 58.8 168.15 371 351 366
Casual & Word (PR 2021) 94 68.6 135.95 509 521 512
OP (PR 2021) 88 88.8 157.5 607 630 613
Regions (PR 2021) 97 55 149.3 531 583 544
Number Placement (PR 2021) 39 110.7 155.017 754 852 778
Loops (PR 2021) 100 59.4 159.9 568 626 582
Classics (PR 2021) 70 90.5 160.633 646 735 668
Classics (PR 2020) 137 64.1 149 520 551 528
PuzzlersClub 2 86 107 1162 127 97 120
Classics (PR 2019) 82 77 160.05 508 526 513
Casual & Word (PR 2018) 127 16 93.9 211 137 192
Evergreens (PR 2018) 149 12.7 155.3 105 33 87
April Contest 2018 50 6 96
MII & Regions (PR 2018) 97 35.8 144.2 384 379 383
NP & OP (PR 2018) 80 45 120 525 582 539
15th Anniversary 56 395 881.5
Classics (PR 2018) 85 102.117 168.3 579 548 572
Sudoku Testmathjuny's Rankmathjuny's ScoreTest Max ScorePSRSNSW
2026R4 (Irregular & Converse) 123 56.6 140.35 545 606 560 1
2026R3 (OE & Hybrids) 67 73.7 140.35 647 815 689 1
2026R2 (Math & Outside) 37 100.017 141.283 794 919 825 1
2026R1 (Standard & Neighbours) 42 89.2 138.433 766 911 802 0.8
HNY2024 157 84 890 230 320 252
2023R4 (Neighbours & Converse) 117 46.8 126.7 576 693 605
2023R3 (Irregular & Math) 70 55 121.783 636 823 683
2023R2 (Outside & Hybrids) 42 78 136.25 709 894 756
2022R2 (Odd Even & Hybrids) 308 5 142.533 56 50 54
2022R1 (Standard & Neighbours) 76 71 138.383 654 803 691
2023R1 (Standard & Odd Even) 101 67 140.617 655 806 693
Odd Even (SM 2021) 80 66.8 149.333 590 690 615
Hybrids (SM 2021) 103 71 151.867 569 668 594
Irregular and Twisted Classics (SM 2021) 179 49 150.4 430 427 429
Outside (SM 2021) 32 112.033 145.05 819 911 842
Standard (SM 2021) 93 88.2 153.25 636 742 662
Quinze 2 109 290 1017.03 408 392 404
Substitution and Neighbours (SM 2020) 176 38.6 128.417 495 487 493
Standard (SM 2020) 130 85.9 157.367 651 706 665
Pentakaideca 63 44.3 130.1 507 523 511
SSC2019 28 275 585
Get Overlapped! 60 63 232.067
Substitution & Odd Even (SM 19) 204 21 137.517 246 245 246
Irregular & Hybrids (SM 18) 64 52.7 126.7 568 680 596
Math (SM 18) 192 26.4 142.1 301 202 276
Odd Even & Substitution (SM 18) 174 36.8 141.1 368 304 352
R19 - WSC Playoffs 40 64 134.9 610 675 626
Outside & Neighbours (SM 18) 141 37 131.3 452 440 449
Standard (SM 18) 104 68 157.1 577 637 592
Converse & Twisted Classics (SM 18) 139 43 143.6 486 496 489
"What Is It?" - Sudoku Contest 89 0 420

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