Challenge: sum of squares. Let's break 299

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Challenge: sum of squares. Let's break 299

01-19-2018, 06:31 AM

Post: #6

Paul Dale Offline

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Posts: 1,837
Joined: Dec 2013

RE: Challenge: sum of squares. Let's break 299

Instead of a brute force backtracking algorithm, build a graph with the numbers as nodes and edges where they sum to a square. Then find a Hamilton walk with a backtracking search.

Pauli

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Messages In This Thread

Challenge: sum of squares. Let's break 299 - pier4r - 01-18-2018, 09:32 PM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 01-18-2018, 10:58 PM

RE: Challenge: sum of squares. Let's break 299 - Didier Lachieze - 01-19-2018, 12:08 AM

RE: Challenge: sum of squares. Let's break 299 - Didier Lachieze - 01-19-2018, 12:15 PM

RE: Challenge: sum of squares. Let's break 299 - Paul Dale - 01-19-2018, 04:29 AM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-20-2018, 05:43 PM

RE: Challenge: sum of squares. Let's break 299 - John Keith - 01-20-2018, 08:19 PM

RE: Challenge: sum of squares. Let's break 299 - Paul Dale - 01-20-2018, 10:13 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-20-2018, 10:31 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 02:17 AM

RE: Challenge: sum of squares. Let's break 299 - pier4r - 11-03-2022, 07:32 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-19-2018, 04:29 AM

RE: Challenge: sum of squares. Let's break 299 - Paul Dale - 01-19-2018 06:31 AM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-19-2018, 06:48 AM

RE: Challenge: sum of squares. Let's break 299 - pier4r - 01-19-2018, 12:40 PM

RE: Challenge: sum of squares. Let's break 299 - Didier Lachieze - 01-19-2018, 12:47 PM

RE: Challenge: sum of squares. Let's break 299 - Didier Lachieze - 01-19-2018, 04:26 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-19-2018, 04:33 PM

RE: Challenge: sum of squares. Let's break 299 - Didier Lachieze - 01-19-2018, 04:56 PM

RE: Challenge: sum of squares. Let's break 299 - ggauny@live.fr - 01-20-2018, 06:15 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-20-2018, 09:08 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-21-2018, 05:41 AM

RE: Challenge: sum of squares. Let's break 299 - Gilles59 - 01-21-2018, 10:44 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-22-2018, 01:40 AM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 01-22-2018, 11:54 AM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-22-2018, 01:11 PM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 01-22-2018, 03:19 PM

RE: Challenge: sum of squares. Let's break 299 - Gilles59 - 01-22-2018, 08:49 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-24-2018, 09:18 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-24-2018, 09:43 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-24-2018, 10:03 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-24-2018, 10:08 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-24-2018, 10:14 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-24-2018, 10:16 PM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 01-24-2018, 10:22 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-24-2018, 10:29 PM

RE: Challenge: sum of squares. Let's break 299 - pier4r - 01-25-2018, 05:54 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-24-2018, 10:32 PM

RE: Challenge: sum of squares. Let's break 299 - Thomas Okken - 01-24-2018, 10:33 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 01:47 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 01:49 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 01:55 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 02:04 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 03:25 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 04:19 AM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 01-25-2018, 09:33 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 10:53 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-25-2018, 11:10 PM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 01-26-2018, 12:29 AM

RE: Challenge: sum of squares. Let's break 299 - pier4r - 01-26-2018, 08:15 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-26-2018, 10:01 PM

RE: Challenge: sum of squares. Let's break 299 - pier4r - 01-27-2018, 01:23 PM

RE: Challenge: sum of squares. Let's break 299 - Massimo Gnerucci - 01-27-2018, 02:14 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 01-28-2018, 04:14 PM

RE: Challenge: sum of squares. Let's break 299 - brickviking - 01-29-2018, 07:13 PM

RE: Challenge: sum of squares. Let's break 299 - peacecalc - 01-30-2018, 02:51 PM

RE: Challenge: sum of squares. Let's break 299 - Allen - 02-01-2018, 03:38 AM

RE: Challenge: sum of squares. Let's break 299 - Allen - 02-01-2018, 03:40 AM

RE: Challenge: sum of squares. Let's break 299 - TheKaneB - 02-01-2018, 10:54 AM

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