Fiddler on the Proof: Nov 8, 2024
Fiddler on the Proof: Nov 1, 2024
Fiddler on the Proof: Oct 18, 2024
Fiddler on the Proof: Oct 11, 2024
Fiddler on the Proof: Oct 4, 2024 (Featured on Fiddler on the Proof)
Fiddler on the Proof: Aug 16, 2024 (Featured on Fiddler on the Proof)
Fiddler on the Proof: Jul 19, 2024 (Won!)
Fiddler on the Proof: Jul 12, 2024
Fiddler on the Proof: Jun 14, 2024
Fiddler on the Proof: Jan 5, 2024 (Won!)
Fiddler on the Proof: Nov 17, 2023 (Won 🎬 Best Picture Award 🎬 and featured on Fiddler on the Proof)
Ridder Express: Jun 2, 2023
Ridder Express: May 5, 2023
Ridder Express: Mar 10, 2023
Ridder Classic: Feb 3, 2023 (Featured by FiveThirtyEight)
Ridder Classic: Jan 27, 2023
Ridder Classic: Jan 20, 2023
Ridder Express: Jan 6, 2023
Ridder Classic: Dec 16, 2022 (Featured by FiveThirtyEight)
Ridder Classic: Dec 9, 2022 (Featured by FiveThirtyEight)
Ridder Express: Dec 2, 2022 (Featured by FiveThirtyEight)
Ridder Classic: Dec 2, 2022
Ridder Express: Nov 4, 2022
Ridder Express: Sep 9, 2022
Ridder Classic: Aug 19, 2022
Ridder Classic: Aug 5, 2022
Ridder Express: Jul 1, 2022
Ridder Classic: Jul 1, 2022
Ridder Classic: Jun 24, 2022
Ridder Classic: Jun 17, 2022
Ridder Express: Jun 17, 2022
Ridder Classic: Jun 10, 2022 (Featured by FiveThirtyEight)
Ridder Express: Apr 29, 2022
Ridder Classic: Apr 15, 2022
Ridder Classic: Mar 25, 2022
Ridder Classic: Feb 25, 2022
Ridder Express: Feb 25, 2022
Ridder Classic: Feb 18, 2022 (Featured by FiveThirtyEight)
Ridder Express: Feb 18, 2022
Ridder Classic: Feb 4, 2022
Ridder Classic: Jan 21, 2022 (Featured by FiveThirtyEight)
Ridder Express: Jan 7, 2022
Ridder Classic: Nov 26, 2021
Ridder Express: Nov 19, 2021 (Featured by FiveThirtyEight)
Ridder Express: Oct 15, 2021 (Featured by FiveThirtyEight)
Ridder Classic: Oct 8, 2021
Ridder Express: Oct 8, 2021
Ridder Express: Oct 1, 2021
Ridder Express: Sep 24, 2021
Ridder Classic: Sep 17, 2021
Ridder Express: Sep 17, 2021
Ridder Express: Aug 20, 2021
Ridder Classic: Aug 13, 2021
Ridder Express: Aug 13, 2021
Ridder Classic: Jul 16, 2021
Ridder Express: Jul 16, 2021
Ridder Classic: Jun 25, 2021
Ridder Express: Jun 25, 2021
Ridder Classic: Jun 18, 2021 (Won! Featured by FiveThirtyEight)
Ridder Classic: Jun 4, 2021
Ridder Express: Jun 4, 2021
Ridder Express: May 14, 2021
Ridder Express: May 7, 2021
Ridder Classic: Apr 30, 2021
Ridder Classic: Apr 16, 2021
Ridder Express: Apr 16, 2021
Ridder Express: Apr 9, 2021
Ridder Classic: Mar 26, 2021
Ridder Express: Mar 26, 2021
Ridder Classic: Mar 19, 2021 (Won!)
Ridder Express: Mar 19, 2021
Ridder Classic: Mar 5, 2021 (Featured by FiveThirtyEight)
Ridder Express: Mar 5, 2021
Ridder Express: Feb 12, 2021
Ridder Classic: Feb 5, 2021
Ridder Express: Feb 5, 2021
Ridder Express: Jan 29, 2021 (Will go to blogs)
Ridder Classic: Jan 22, 2021 (Featured by FiveThirtyEight)
Ridder Classic: Jan 15, 2021
Ridder Express: Jan 15, 2021
Ridder Classic: Jan 8, 2021
Ridder Express: Jan 8, 2021
The Crazy Santa Puzzle
Ridder Classic: Dec 11, 2020
Ridder Express: Dec 11, 2020
Mathigon Puzzle Calendar: Day 13
Ridder Classic: Dec 4, 2020
Ridder Express: Dec 4, 2020 (Featured by FiveThirtyEight)
Ridder Classic: Nov 20, 2020 (Will go to blogs)
Ridder Express: Nov 20, 2020 (Will go to blogs)
