Asian Sudoku Championship 2025
Sudoku Champs 2024

Ivan Koswara
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Player Profile : chaotic_iak
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Real name Ivan Koswara
Puzzle Bloghttps://chaoticiak.github.io/logic.html
Country Indonesia
Date registered2011-02-26 7:04 PM
Last logon2024-09-26 5:28 PM
Total posts241 1001002020
Rank[auth] Typed Logic Author[/auth]
Daily Contestschaotic_iak's Rankchaotic_iak's ScoreTest Max Score
Classic Tapa Contest - 2016 17 466.6 606.4
Classic Tapa Contest - 2013 25 290.1 407.8
Classic Tapa Contest - 2012 261 14.8287 501.944
Puzzle Testchaotic_iak's Rankchaotic_iak's ScoreTest Max ScorePSRSNSW
2024R6 (Snake & Casual) 22 109.183 0
2024R5 (Shading & Regions) 36 88 0
2024R4 (Word & OP) 34 97.5 0
April Contest 2024 53 16 98
2024R3 (Evergreens & MII) 61 64.3 0
2024R2 (Loops & Numbers) 51 73 0
2024R1 (Classics) 70 72 0
Shading (PR 2021) 22 139.733 168.15 840 888 852
OP (PR 2021) 22 128.317 157.5 833 911 853
25Y Author
PZ 9 710 1061.67 757 934 801
PU IV 12 868.5 1468.5 730 908 775
PU III 33 564.1 1309.1 631 807 675
Typed Logic Author
MII and Regions (PR 2020) 30 124.167 160.15 794 846 807
Casual and Word (PR 2020) 16 106.7 132.783 840 919 860
Metaloop 14 1000 0
Evergreens (PR 2020) 43 82 136.933 686 832 722
April Contest 2020 62 44 85
Shading and Loops (PR 2020) 19 144.583 169.483 855 918 870
Number and Object Placement (PR 2020) 49 80 134.9 694 798 720
Classics (PR 2020) 68 90.1 149 667 777 695
PuzzlersClub 1 Author
MII & Regions (PR 2019) 45 73 139.15 619 699 639
Casual & Word (PR 2019) 11 102.75 122.467 859 929 876
Shading & Loops (PR 2019) 36 119.8 162.05 764 800 773
Connected Puzzles (PR 2019) 19 126.767 149.167 868 891 874
Classics (PR 2019) 21 130.15 160.05 823 883 838
Kaleidoscope 2018 5 223 330.7
Loops & Shading (PR 2018) 28 117.983 156.933 762 799 771
Casual & Word (PR 2018) 8 81.3 93.9 887 952 903
Evergreens (PR 2018) 24 95 155.3 681 850 723
April Contest 2018 39 24 96
MII & Regions (PR 2018) 51 63 144.2 584 673 606
NP & OP (PR 2018) 38 68.3 120 673 804 706
15th Anniversary 2 860 881.5
Classics (PR 2018) 7 156.633 168.3 926 968 936
Number Placement & Evergreens (PR 2016/17) 22 80.6 128.2 699 848 737
April Contest 2017 45 47 99
Object Placement & Pentomino (PR 2016/17) 18 90 124.917 786 887 811
Shading and Loops (PR 2016/17) 14 140.35 169.817 850 924 869
Snowmen 14 341.5 596.667 690 856 731
Classics & Regions (PR 2016/17) 20 126.5 156.1 843 913 860
Moscow Puzzle Cup 2016 19 848 1314.9
Kaleidoscope 6 251 318.298 850 928 869
Hex Slitherlink 39 100 100
April Contest 2016 39 54 102
Puzzle Marathon 2016 47 704.202 976.528 697 829 730
Object Placement (PR 2015/16) 28 91.6 137.65 750 832 771
Loop pooL 21 100 100
NEW, HUGE, AND CHALLENGING Author
Loops (PR 2015/16) 25 143.333 165.6 858 888 866
Toketa? Selection 4 901 1103.67 875 975 900
Shading (PR 2015/16) 9 145.917 159.05 924 961 933
Snakes (PR 2015/16) 13 114.667 137.867 868 917 880
WCPN 22 685 1279.77 683 875 731
LMI Screen Test #5 22 1807.2 2175.2 835 920 857
Regions (PR 2015/16) 23 129.4 157.683 839 902 855
Snake Variations Contest - 2015 5 631.7 694.833
Evergreens (PR 2015/16) 32 77 130.2 710 853 746
Numbers (PR 2015/16) 73 62 150 577 697 607
Classics (PR 2015/16) 9 139.85 157.633 909 967 923
April Contest 2015 51 19 99
Puzzle Marathon 2015 33 583.87 757.097 748 890 783
forsmarts 12th Anniversary Contest 29 315 838.5
Pento Parade 20 889.5 1592.22 706 854 743
September Magic Contest 25 162 423
World Practice Championship - Day 2 9 1230 1719
World Practice Championship - Day 1 20 1379 2014
Parallel Universe II 14 1080 2152.05 678 890 731
April Contest 2014 25 61 99
FAST Author
LMI Puzzle Marathon 2014 44 606.964 773.675 774 862 796
Kakuro 82 434 1353 504 515 507
forsmarts 11th Anniversary Contest 32 705 1000
Japanese Puzzle Land 2 20 695 1103.4 744 903 784
DWBH 20 636.5 946.667 769 901 802
WPC Practice Test 15 565 972.95
Classics : Hexed & Remixed 31 435 885 602 735 635
WPMM 13 774.831 929.468 836 943 863
DTGT 65 394 1208.8 541 559 546
Deception Author
April Contest 2013 43 37 92
Puzzle Marathon 2013 49 744.515 970.828 761 843 782
Best of LMI Puzzle Tests 37 213 487 631 727 655
8th Open Moscow Puzzle Cup 2012 53 155 439
forsmarts 10th Anniversary Contest 46 380 935 513 571 528
Word Show 23 77 163 632 796 673
Fillomino-Fillia 2 28 86.24 185.727
123 GO 29 108 203.926 678 850 721
Borders & Beyond 37 330 861.292 598 753 637
Screen Test #2 31 1130 1428 794 909 822
LMI Sprint Test 119 105 348 477 441 468
Fillomino Fillia 58 51 148 538 606 555
Puzzle Hybrids 95 188 1265 243 161 223
Melon's Puzzle Zoo 44 255 780 500 517 504
Sudoku Testchaotic_iak's Rankchaotic_iak's ScoreTest Max ScorePSRSNSW
Mean Minis 79 49.1 135.9 561 650 583
Irregular & Hybrids (SM 18) 195 2 126.7 24 15 22
Math (SM 18) 101 49 142.1 526 580 539
Odd Even & Substitution (SM 18) 106 57.9 141.1 543 575 551
Outside & Neighbours (SM 18) 109 45 131.3 523 568 534
Standard (SM 18) 122 62 157.1 548 574 554
"What Is It?" - Sudoku Contest 28 155 420
Wacky Slovak Classics 102 65 259.25 406 303 381
September Sudoku Contest 2016 29 225 502.8
Unlucky 13 212 403 1882.62 172 79 149
LMI Screen Test #4 67 1472.99 2982.38 620 705 641
LMI Screen Test #3 128 882.35 2849.14 527 555 534
WSPC 2021chaotic_iak's Rankchaotic_iak's ScoreTest Max Score
01 - Welcome to WS + PC 159 202 0
02 - In Memory of Maki Kaji 39 535 0
03 - Made in China 26 630 0
04 - Made in India 30 400 0
05 - Multi Skyscapers 61 200 0
06 - All Stars 60 335 0
07 - 20 by 20 52 330 0
08 - Night and Day 22 533 0
09 - Triple Jump 250 0 0
10 - Mitosis 99 253 0
TVCchaotic_iak's Rankchaotic_iak's ScoreTest Max Score
Tapa Variations Contest - XXII 50 613.667 0
Tapa Variations Contest - XXI 71 199.917 0
Tapa Variations Contest - XX 14 575.533 913
Tapa Variations Contest - XIX 12 749.417 1040.2
Tapa Variations Contest - XVIII 28 614.4 1059.25
Tapa Variations Contest - XVII 16 844.833 1054.45
Tapa Variations Contest - XVI 23 767.75 1056.17
Tapa Variations Contest - XV 15 892 1123.42
Tapa Variations Contest - XIV 29 789 1102.93
Tapa Variations Contest - XIII 22 768.833 1080.75
Tapa Variations Contest - IX 70 358 957
Beginners' Sudokuchaotic_iak's Rankchaotic_iak's ScoreTest Max Score
December 2013 132 50.5 116.92
January 2013 129 57.25 123.42
Beginners' Puzzlechaotic_iak's Rankchaotic_iak's ScoreTest Max Score
Cave 2 129.1 131.4
Yajilin 27 117.233 136.6
Yin-Yang 2 134.667 136.333
Minesweeper 10 130.5 135.967
Tetrominoes 44 99.9 128
Spiral Galaxies 12 115.267 137.067
LITS 32 110.833 137.333
Skyscrapers 33 114.9 135.167
Slitherlink 50 118.1 142.367
Star Battle 20 125.1 139.367
Masyu 42 366.83 549.92