Placeholder Image

Individual Rankings

How are Rankings Calculated?

Rankings are calculated using a weekly point system. Each time a participant submits a correct answer to a current* problem they will receive:

  • 10 points for number 1 on a weekly list
  • 9 points for numbers 2 - 5
  • 8 points for numbers 6 - 10
  • 7 points for numbers 11 - 20
  • 6 points for numbers 21 - 40
  • 5 points for numbers 41 - 60
  • 4 points for numbers 61 - 80
  • 3 points for numbers 81 - 99
  • 2 points for numbers 100 - 199
  • 1 point for numbers 200+

Weekly points are added to the monthly and annual totals.

* Problems are considered current if they are less than 7 days old. Current problems begin 8am Central on Monday and expire at 7am Central the following Monday.

Displaying results for January, February, March, April, May, June, July, August, September, October, November, December, 2021 in categories: Problem of the Week

Rank User Location Score
1 Florence Rollins Houston, TX, USA 446
2 Mario Skrtic Zagreb, Croatia 426
3 Cees Otto Oegstgeest, Zuid-Holland, Netherlands 420
4 Jason Smith Decatur, IL, USA 398
5 Jeff Sayah Jerusalem, M, Israel 390
6 Dordy Chrysanthemum San Francisco, CA, USA 388
7 Jean-Guy Smith Sorel-Tracy, QC, Canada 384
7 Sarah Hellman Louisville, KY, USA 384
9 Mike Schieffer Austin, TX, USA 383
10 Matt Gillespie Chicago, IL, USA 379
11 Raymond Chrisman San Francisco, CA, USA 375
12 Bill Mansfield North Boston, NY, USA 371
13 Tom Hendricks Tifton, GA, USA 368
14 Dennis Muniz Huntington, NY, USA 367
15 Patrick Costello Richmond, KY, USA 366
16 Carl Mungan Annapolis, MD, USA 355
17 Richard Atchley Bremerton, WA, USA 343
17 Arlon Georger Eden, NY, USA 343
19 Greg D'Entremont Quispamsis, New Brunswick, Canada 338
19 Khalil Dagher Beirut, Mount Lebanon, Lebanon 338
21 Bassel Baker Beirut, Lebanon, Lebanon 337
22 Carlos Alberto Miranda Pantoja Manzanillo, Granma, Cuba 336
23 Bob Rugaber Rushville, NY, USA 329
24 Frank McGartland Saskatoon, SK, Canada 326
25 Chris Evert Sugar Land, TX, USA 323
26 Paul Larm Vancouver, BC, Canada 310
27 Jerome Cherry Vegreville, AB, Canada 306
28 Sergio Leonardi Houston, TX, USA 293
29 Morris Leibov Poulsbo, WA, USA 291
30 Mitch Schieffer Austin, TX, USA 289
31 Iqbal Shahid Karachi, Sindh, Pakistan 287
32 Michael Ling Vancouver, BC, Canada 279
33 Steven Ferry Elanora, QLD, Australia 278
34 Collin Esposito Columbus, OH, USA 273
35 Sean Forbes Crest Hill, IL, USA 267
35 Sergey Gleizer Perth Amboy, NJ, USA 267
37 Robert Siddon Annapolis, MD, USA 256
38 Diane Eagle Lubbock, TX, USA 247
39 Reggie Blatz Columbus, OH, USA 243
40 Betsy Siddon Brooklyn, NY, USA 221
40 Michael Cantatore East Rutherford, NJ, USA 221
42 Jerrold Greenberg New York, NY, USA 212
43 Jeff Esposito Columbus, OH, USA 211
43 James Haas San Francisco, CA, USA 211
45 William MacLean Houston, TX, USA 210
46 Phyllis Cormier Lubbock, TX, USA 207
47 Rintoo Divakaran Ernakulam, KL, India 198
48 Henry Tran Houston, TX, USA 190
49 Sherry Wolf North Haven, CT, USA 187
50 Mihir Tandon Grayslake, IL, USA 178
51 Ed Wilson Richmond, KY, USA 174
52 Cedie Portes Lucena, Quezon, Philippines 167
52 Tristan Goodman manchester, VT, USA 167
54 Pavel Gushchin Chelyabinsk, URAL, Russia 162
55 Dennis Doble Burlington, MA, USA 149
56 Fred Arrigoni Adairsville, GA, USA 144
57 Samuel Elias Ciudad Victoria, TAM, Mexico 138
58 John Ellen Kure Beach, NC, USA 134
59 Stuart Tao Calgary , AB, Canada 132
60 Isabela Loredo :D Potente Cd Victoria , Tamaulipas B), Mexico 123
61 Crispin Pereira Toronto, Ontario, Canada 117
62 Anurup Das Dhaka, Dhaka, Bangladesh 113
63 Giang Tran Houston, TX, USA 110
64 Cody Rollins Puyallup, WA, USA 106
65 Steve Hnidei Windsor, ON, Canada 104
66 Zlatko Brkljaca Zagreb, Croatia 97
67 Ryan Li San Diego, CA, USA 90
68 Charles Selph Hayes, VA, USA 87
69 Ryan Melbard Jacksonville, NC, USA 83
70 Aditya Datta Kolkata, WB, India 82
71 Travis Krahn Rochester, MN, USA 79
72 Jon Robert Dallas, TX, USA 78
73 Joseph Nelson Wailuku, HI, USA 77
73 Graham Anderson Coochiemudlo Island, QLD, Australia 77
75 Math Goddess Belaire, TX, USA 75
76 Doug Massey Weaverville, NC, USA 73
77 Ricardo Torres Ciudad Victoria, TAM, Mexico 70
78 Noah Schmidt Gold Coast, QLD, Australia 65
79 Ximena Pineda Guatemala City, GUA, Mixco 62
80 Jason Pu San Diego, CA, USA 61
81 Bedis Benlakhdar Rades , Ben Arous, Tunisia 57
82 Salehe Mzava Kilimanjaro, Kilimanjaro, Tanzania 56
82 Aaron Ye San Diego, CA, USA 56
84 Michelina Gage Grass Valley, CA, USA 53
84 Angel Zheng East Amherst, NY, USA 53
86 Connor Chang Pittsburgh, PA, USA 52
87 Hamisi Jumanne Babati, Manyara, Tanzania 51
88 Tim Poe Puerto Vallarta, Jalisco, Mexico 50
89 Roman Sány Bánovce nad Bebravou, Trenčiansky kraj, Slovakia 49
90 Ed Groth Mountain Top, PA, USA 47
90 Jim Stein Stratford, CT, USA 47
92 Tiger Han San Diego, CA, USA 45
92 Ikechukwu Ogbonna Nsukka, Enugu, Nigeria 45
94 Hussain Hussain Manama, Bahrain 43
95 Mrinal Agarwal Dublin, CA, USA 41
96 Vishnu Vasudeva Danville, CA, USA 40
97 Michael Li St. Louis, MO, USA 39
98 Debra Hastings Math Class Jackson, MS, USA 38
99 Jono L Sunny Coast, QLD, Australia 37
100 Dan C. Vancouver, BC, Canada 35
101 Hayden Weber Phoenix, AZ, USA 32
101 Reyaansh Agrawal Bangalore, Karnataka, India 32
103 Maulik Rastogi Dublin, CA, USA 31
103 Mathew Chethimattom Columbus, GA, USA 31
103 Andreas Parry Lietara Jakarta, JK, Indonesia 31
106 Atharv Upadhyay Pleasanton, CA, USA 30
106 Nayan Santheepan Watford, Herts, UK 30
108 Tom Goodwin Northville, MI, USA 29
108 Prakhar Gupta 205 Ghalia, Al-Fintas Towers, Mahboula, Kuwait 29
110 Jimmy Rong San Diego, CA, USA 28
110 Cadshel Anten Henry J. Chennai,Tamil Nadu, TN, India 28
110 Math Lover Jaipur, RJ, India 28
113 Vig O'Rous Chattanooga, TN, USA 27
113 SARVESH PRAKASH Delhi, DL, INDIA 27
113 Manthan Rao Delhi, Dl, India 27
116 Aryu Reddy San Francisco, CA, USA 26
116 Ima Banker San Francisco, CA, USA 26
118 Abdelwahab Abdelhameed Cairo, Cairo, Egypt 25
118 Daniel Senecal Montreal, QC, Canada 25
120 Ceaser Kabila Livingston, Southern province, Zambia 24
120 Mansur Turan Bishkek, GB, Kyrgyzstan 24
122 John Adams Gainesville, GA, USA 23
123 Poptart Christmas San Francisco, CA, USA 22
124 Ameya Paliwal Dublin, CA, USA 21
125 Bob The Builder Dublin, CA, USA 20
125 James Duffy Gonzales, LA, USA 20
125 Edward Freeman West Hartford, CT, USA 20
125 Advait Razdan Mumbai, Maharashtra, India 20
125 Matthew Burrows Paris, CVL, France 20
130 May Wong San Francisco, CA, USA 19
130 Daniel Škrtić Zagreb, Croatia 19
130 Bob Peters Tel Aviv, TA, Israel 19
133 John Biala Chicago, IL, USA 18
133 Hung Nguyen Vinh, Nghệ An, Nghệ An, Viet Nam 18
135 Tyler Yuen Plymouth Meeting, PA, USA 16
136 Jamie Grim Oakley, CA, USA 15
136 Manoj Kumar Bhadra, Hanumangarh, Rajasthan, India 15
136 Angel Zheng East Amherst, NY, USA 15
136 Maulik Rastogi Dublin, CA, USA 15
136 Sarah Seales Phoenix, AZ, USA 15
136 Mikel Brunner Medford, OR, USA 15
136 Pwarzival T Carmichael, CA, USA 15
143 Alexn Nuntiyagul Bangkok, Thailand 14
143 Ronav Mandal San Ramon, CA, USA 14
143 Christopher Zhou Chicago, IL, USA 14
143 Courtney Baker Lubbock, TX, USA 14
147 Gian Martinez Santa Clarita, CA, USA 13
147 Jacob Q Weaverville, NC, USA 13
147 Siddhant Mukherji Bangalore, Karnataka, India 13
147 Sean Flannery St Louis, MO, USA 13
147 Vincent Gozé Calais, HDF, France 13
152 Vicki Tran Long Beach, MS, USA 12
152 Lucy Ling Vancouver, BC, Canada 12
152 Amicable Advika Houston, Texas, United States 12
155 PRASHIK SHENDE NAGPUR, Maharashtra, India 11
155 Amelia Osis Grayslake, IL, USA 11
155 Isaiah Stuart Medford, OR, USA 11
155 Brent Hurlas Brooklyn, NY, USA 11
155 Imri Tal Jerusalem, M, Israel 11
160 Scott Busby Cartersville, GA, USA 10
160 Joseph Rey Valeza Quezon City, Catanduanes, Philippines 10
160 Jenito Dani Trichy, TN, India 10
160 Ana Dy Manila, Philippines 10
160 Jeanne Weise Cedar Park, TX, USA 10
160 Steve Eastop Margate, Kent, UK 10
160 Moshe Tsypin Hood River, OR, USA 10
160 Tanner Owens Lubbock, TX, USA 10
160 Alejandro Miranda Cienfuegos, Cienfuegos, Cuba 10
169 Dênis Silva Oliveira Joinville , SC, Brazil 9
169 Oliver Di-Marcello Bolton, UK 9
169 MW Budge Los Alamos, NM, USA 9
169 Robert Plant II Lubbock, TX, USA 9
169 Bofah Patrick Kumasi , Pankrono , Ghana 9
169 Ashfaq MAhmud Shovon Cumilla, C, Bangladesh 9
169 San S Chalisgaon, MH, India 9
169 Nina S Brussels, Belgium 9
177 Wensy Perez Atlanta, GA, USA 8
177 Anil Byar Kathmandu , 3, Nepal 8
177 Amya Ceetherum San Francisco, CA, USA 8
177 Pranav Chandar Evansville, IN, USA 8
177 Jack Hanling Augusta, GA, USA 8
177 Sameh Ghozl Nasr City, Cairo, Egypt 8
177 Dripto Maity Kharagpur, WB, India 8
184 Kwadwo Adomako Dwamena Kumasi, Ashanti, Ghana 7
184 Michael Kunz Gaggenau, BW, Deutschland 7
184 Amanda McKinney San Francisco, CA, USA 7
187 Fiona FLynn Grayslake, IL, USA 6
187 Parker Postol Grayslake, IL, USA 6
187 Jonah Heupel Grayslake, IL, USA 6
187 Andy Zheng East Amherst, NY, USA 6
187 Dufus Dog Littleton, Colorado, United States 6
187 Jenito Theo Arumbavur, TN, India 6
187 Kai McKay Palm Bay, FL, USA 6
187 Richard Awoyade Lagos, Ipaja, Nigeria 6
187 Cabrel Ngueguim Yaoundé, Center, Cameroon 6
187 Marcos Cisneros Cartersville, GA, USA 6
187 Christian Da Honduran Cartersville, GA, USA 6
187 Burrose Lee Hdhjsqgd, csqjksd, jkhsjhd 6
199 Chris Fox Norwalk, CT, USA 5
199 Basil Kilisav Rochester, NY, USA 5
199 Pratibha Malhotra Delhi, Delhi, India 5
199 Ryan L Grayslake, IL, USA 5
199 Emily Meneses Grayslake, IL, USA 5
199 Katsumi CBDBC San Francisco, CA, USA 5
199 Neil Govekar Dublin, California, United States 5
199 Lekha Anand Pleasanton, CA, USA 5
199 Claire Lee San Diego, CA, USA 5
199 Joshua Fang South Pasadena, CA, USA 5
199 Mushota Chikumbi Lusaka, Lusaka, Zambia 5
199 Sameh Ghozl Nasr City, Cairo, Egypt 5
199 Kalyan Reddy Hyderabad, Telangana, India 5
199 Ariel Yat Herzliya, Israel, Israel 5
199 John Menard Abanilla Lucena City, Quezon, Philippines 5
199 Avery Grimsley Medford, OR, USA 5
199 Philip Martin King of Prussia, PA, USA 5
199 Sqloo Ja Trichy, Tamilnadu, India 5
199 Theo Surya Lalgudi, TN, India 5
199 Samuel Holttum Olympia, WA, USA 5
199 Clinton Meyer Image Flat, QLD, Australia 5
199 E Pertterson Houston, TX, USA 5
199 Aastha Nanda Dublin, CA, USA 5
199 Mark Julius Salva Daet, Camarines Norte, Philippines 5
199 Y S Chd, India 5
199 I L Velp, GE, Netherlands 5
199 Dvon Gay Northfield, OH, United States 5
199 Oleimo Jermaine Kampala, C, Uganda 5
199 Sam Poulos Austin, TX, USA 5
199 Alex Dolzhenko Kyiv, Ukraine 5
199 V S Powai, MH, India 5
199 Abhinav Srijan Muzaffarpur, Bihar, India 5
199 Isabella Torres Nanjing, JS, China 5
199 Dotted Calculator Ahmedabad, GJ, India 5
199 Justin Tsai Carmichael, CA, USA 5
199 Amirreza Mazinani Dāmghān, Iran 5
199 Ali Mirrokni Tehran, Tehran, Iran 5
199 Daaruk Kumarasamy Durban, KwaZulu-Natal, South Africa 5
199 Ronny Landsverk Arendal, Norway 5
199 Nwankwo Chidiebere Godswill Lagos, Abia/Aba, Nigeria 5
199 Rowan Mckenna Hood River, OR, USA 5
199 Rith Saliot Davao, Davao De Oro, Philippines 5
199 Yuta Yamashita melbourne, vic, australia 5
199 Emmanuel Oluwatoba Ado-Ekiti , Ekiti-State, Nigeria 5
199 Ahmed Zubayer Dhaka, Dhaka, Bangladesh 5
199 SUDHAKAR VENKATARAMAN COIMBATORE, TAMILNADU, INDIA 5
199 Javier Sardinas Houston, TX, USA 5
199 Syon Dsouza Mumbai, Maharshtra, India 5
199 Yousif ALBOUkhary suez, alsabah, Egypt 5
199 Khang Bùi Hải Phòng, Vietnam 5
199 Mathias Jilg Donauwörth , BY, Germany 5
250 Jessica Goldstein San Francisco, CA, USA 4
250 Ronnan Angelo Revillosa Pagbilao, Quezon, Philippines 4
250 Soumyadip Paik Durgapur, WB, India 4
250 Mary Pat Cleveland, OH, USA 4
250 Aapeksh Tyagi Saharanpur, Uttar Pradesh, India 4
250 BIDISHA CHAKRABORTY Kolkata, WB, INDIA 4
250 Manisha Singh Jhansi, U.P. (India), UP, India 4
250 Kate Davies Grayslake, IL, USA 4
250 Tyler Morgan Grayslake, IL, USA 4
250 Trevor Schmeling Grayslake, IL, USA 4
250 Lylia Z San Diego, CA, USA 4
250 Elijah Lockwood Shaw, DC, USA 4
250 Ismail Mdimi Kihonda, Morogoro, Tanzania 4
250 Deepthi Shanmugasundaram Maidstone, ENG, uk 4
250 Meg Claypool Eureka, California, United States 4
250 Darryl Gerrow Greenfield, NB, Canada 4
250 Holly Ceci Kinsman, OH, USA 4
250 Sadiq Deyab Aali, Bahrain 4
250 Aarav Goel Dublin, CA, USA 4
250 Ananya Garg Livermore, CA, USA 4
250 Rahul Singal Hisar, HR, India 4
250 Abhishek Alalmath Pune, Maharashtra , India 4
250 Ashraful K Mahin Budapest, Hungary, Hungary 4
250 Tree White Tree Tokyo, Japan 4
250 Abdelhay Lawhy Ouarzazate, Morocco 4
250 Clinton Meyer Image Flat, QLD, Australia 4
250 Rabeeb Ibrat Dhaka, Dhaka, Bangladesh 4
250 Erik Scheurwater Rotterdam, ZH, Nederland 4
250 Prince Sugar Gyasi-Denteh Winneba, Central Region, Ghana 4
250 Adam McAttack Columbus, OH, USA 4
250 Muhammad Furqan Kohat, KPK, Pakistan 4
250 Morgan Groves Lubbock, TX, USA 4
250 Anshu Pandey Allahabad , UP, India 4
250 Dhanya Akashana Saravanan Dubai, Dubai, United Arab Emirate 4
250 Sonaike Abdulhamid Lagos, LA, Nigeria 4
250 Shobhith Vadlamudi hyderabad, Telangana, india 4
250 Rithwik Gupta Fremont, CA, USA 4
250 Christopher Gary LYON, FRANCE 4
250 Chris L Seattle, WA, USA 4
250 Howard Sun Seattle, WA, USA 4
250 Ayush Upadhyay SINGTAM, Sikkim, India 4
250 Kave Abhi Colombo, colombo, srilanka 4
250 Ariba Anis Kanpur, UP, India 4
250 Eric Marr Rothesay, NB, Canada 4
250 Jahin Sadat Mollah Kolkata, WB, India 4
250 Harry Wang Shenzhen, Canton, China 4
250 Caleb Miller Belmopan, Belize 4
250 Praveen Kumar Ramesh Chennai, Tamil Nadu, India 4
250 Venkatasai Laksh Hanchate Fremont, California, United States 4
250 Shinzo Yell lucknow , UP, India 4
250 Sriswaroop Koundinya Charlotte, NC, USA 4
250 Ivan Škrtić Zagreb, Croatia 4
250 Jordan Poon Perth, WA, Australia 4
250 Nhi Nguyen Fort Lauderdale, FL, USA 4
250 Aryan Dwaram Dublin, CA, USA 4
250 Anna K Garmisch Partenkirchen, Germany 4
250 Timileyin Emmanuel Owode, Ogun, Nigeria 4
250 DEBORAH OMOWUNMI owode, Ogun, Nigeria 4
250 Kerry Evans Dayton, OH, USA 4
250 Karl Fitzsimmonds Newcastle, NSW, Australia 4
250 Harshil Sanklecha Ahmedabad, GJ, India 4
250 Roberto Argueta San Salvador, San Salvador, El Salvador 4
250 Fèlix Real College Station, TX, USA 4
250 Eccleston Montaos San Francisco, Agusan del Sur, Philippines 4
250 Sydnhi Casey Cartersville, GA, USA 4
250 Ben Tell Hood River, OR, USA 4
250 Aiden Turner Cartersville, GA, USA 4
250 Jeremy Volk Eagan, MN, USA 4
250 Shamiya Lin Houston, TX, USA 4
250 Allison Evans Cartersville, GA, USA 4
250 Lilly McSwain Cartersville, GA, USA 4
250 Ashton Ortiz Cartersville, GA, USA 4
250 Kimia Ns. Tehran, Tehran, Iran 4
323 Archisman Nandy Kharagpur, West Bengal, India 3
323 Tong Qiu Rio de Janeiro, RJ, Brazil 3
323 Maria Alejandra Rodelo Vivas Bogotá, DC, Colombia 3
323 Patrice Mudimu Marlborough , Harare, Zimbabwe 3
323 Hackerunit 2099 San Diego, CA, USA 3
323 Mike Kuznets New York, NY, USA 3
323 Vedanth Pothina San Ramon, CA, USA 3
323 Jishnu Nayak Mountain House, CA, USA 3
323 Azamat Rashidov Dushanbe , Busan, Tajikistan 3
323 Sahaana Vasudevan San Ramon, California, USA 3
323 GMan Man Orange County, CA, USA 3
323 DIVYANSH KHARE Arya nagar, DURG (C.G), Chhattisgarh, India 3
323 Nishant Naresh Richardson, TX, United States 3
323 Tim Palmer Toowoomba, QLD, Australia 3
323 Amine Ihya Casablanca, Bernoussi, Morocco 3
323 Maher Ali Rusho Dhaka , Bangladesh , Bangladesh 3
323 MAHER ALI RUSHO DHAKA, BANGLADESH, BANGLADESH 3
323 Ümit Geyik İstanbul, Turkey 3
323 Myles Webster Irvine, CA, United States 3