The SNITCH has always relied on a set of Reference solvers to calculate the difficulty of the crossword. Updating this list over time has led me to look at different types of solver. In particular, it has been important to detect and remove "Neutrinos" from the data (see further below). Once this is done we can look at other types of solver more clearly.

What's a Neutrino?

Clusters of solvers

The chart below shows a way to separate Neutrinos from other solvers. It plots each solver's average solving time (in seconds) on the x-axis against an "alignment to SNITCH" factor on the y-axis. This alignment factor is 1 when, on average, a solver's personal NITCH rating for a crossword is proportional to the SNITCH rating for that crossword. It is 0 when there is no alignment. (For those interested, more detail on this is provided below).

The blue dots on this chart represent the Reference solvers for the SNITCH as of Sep 2023. (Note that you can hover over each point to see the name of the individual solver.) As you'd expect, these are clustered around an alignment factor of 1 (generally between 0.5 and 1.5) regardless of their average solving time.

The red dots represent solvers who have been around for some time but are not Reference solvers. A group of these is spread across the range of average solving times and also spread about the SNITCH alignment factor of 1. But there's a cluster of red dots in the lower left corner that has low solving times and is spread around an alignment factor of 0. These are the classic-style Neutrinos - those who are very fast on average, regardless of how hard the puzzles are.

This data suggests that any solver with a solving time of less than, say, 4.3 minutes and a SNITCH alignment factor of, say, less than 0.5 could be safely classified as a Neutrino.

The grey dots represent new solvers since the Reference solver list was baselined in Sep 2023>. We can now see that some of these are clearly Neutrinos (the ones in the cluster at the lower left, for example). Others with low solving times need further investigation, and we do this by checking the details of their alignment with the SNITCH.

Remaining Questions

We see that some solvers have alignment to the SNITCH figures well above 1, which would suggest that they seems to find harder puzzles especially hard. These solvers often have small data sets, including those with relatively high average solving times that don't always make the top 100 on the leaderboard. With the smaller amount of data, the alignment is likely to be less reflective of their true performance.

Blog Solvers: adding solving times from the blog

On the Times for the Times blog site, solvers regularly report their solving times. Where they have allowed it, we now add them to the list of solvers and track their progress. This is a new category of solver, the Blog Solver, for those who've reported solving times regularly over the last six months.

Notes to Blog Solvers:

• the most reliable format for reporting times is with format "mm:ss" or as "x minutes" in the title or at the start of the entry
• only the first main comment for each blogger is used; responses to other comments or a second comment is ignored.
• to report errors, include "n errors" just after the time
• If you just have a time it is assumed you have no errors unless you mention DNF or pink squares or giving up, etc, in the text
• Examples of good time notifications are "38:30, 0 errors" and "39 minutes, 0 errors" in the comment title or as the first part of your comment
• This info is also available using the "Blog Solver" button on the right hand side of the detailed crossword solving times for each crossword

Updating solver status

This analysis allows me to reclassify solvers, as shown in the chart below. One of my main motivations is to be able to update the list of Reference solvers reliably. I'd like to be able to include new solvers (especially good ones) without accidentally including Neutrinos. And I'd like to track other non-Reference and non-Neutrino solvers, even if their data isn't used for the SNITCH.

So I can now classify solvers as follows:

Neutrino

Those with fast solving times and low or inconsistent alignment to the SNITCH (shown in orange)

Reference Solvers

Those aligned to the SNITCH and having an average solving time of less than 45 mins (shown in blue)

Tracked Solvers

Those that don't meet the conditions for Reference Solvers but I can be fairly sure are not Neutrinos (shown in red)

Blog Solvers

Those that report their solving times in the Times for the Times site (shown in purple)

New solvers will come into the list over time and can be reclassified on my next update.

I've shown the old and new status in the full table to the right so that you can track the changes for each user.

So what's the SNITCH alignment factor?

This is actually pretty straightforward if you know a little maths. I plot the solver's individual NITCH scores agains the corresponding SNITCH for the same puzzle and measure the slope of the line of best fit. A slope of 1 indicates that the results are proportional, a slope of 0 means that there's no correlation.

For example, verlaine has results as shown in the chart below. Easier puzzles (according to the SNITCH) are on the left of the x-axis, harder ones on the right. verlaine's NITCH results vary, but are generally higher as we progress from left to right. The overall slope of the line of best fit is 0.93, showing good alignment with the SNITCH on average.

In contrast, robertscottf has results as shown in the chart below. There is no correlation with the hardness of the puzzle according to the SNITCH. In fact, the slope is negative, meaning that on average the harder puzzles are easier for robertscottf than the easier ones. This lack of correlation is exactly what you'd expect if the solver is just typing in known answers.

Nothing is simple and we have some solvers with a mix of results like the ones shown in the chart below. The correlation with the SNITCH is inconsistent - good on some solutions but not on others. On the latter, the solver looks just like a Neutrino, with short response times regardless of the SNITCH value. Presumably they type the answers in directly on these shorter puzzles. For this reason, where we detect this sort of solver, we will mark it manually as a Neutrino.

Solving times for club members

The table below shows crossword club solvers who have submitted more than 20 solutions in the last six months, with an average solving time of less than 60 minutes for an error-free crossword. They are ranked by that solving time. It also indicates their status, including whether they are Reference solvers for calculation of the daily SNITCH.

Rank	Solver	Status - Sep 2023	Current Status	Average Time	SNITCH Alignment
1	ysbwrielllwyr	tracked	neutrino	01:39	-0.09
2	mohn	reference	reference	02:04	0.84
3	niq.dow	tracked	neutrino	02:06	0.07
4	DottyOne	tracked	neutrino	02:08	-0.0
5	auchiedollie	tracked	neutrino	02:15	0.09
6	Jason	reference	reference	02:23	0.92
7	PJFK	new_solver	neutrino	02:24	-0.0
8	Paul Gilbert	reference	reference	02:28	0.78
9	Margaut	tracked	neutrino	02:28	0.0
10	cmjhutton	reference	reference	02:37	1.05
11	mistigris	reference	reference	02:39	1.03
12	mauefw	tracked	tracked	02:44	1.36
13	aphis99	reference	reference	02:44	0.95
14	hilarym	reference	reference	02:48	0.83
15	robertsonjon	tracked	neutrino	02:48	0.17
16	verlaine	reference	reference	02:49	0.93
17	robertscottf	new_solver	neutrino	03:00	-2.88
18	Flimmy flammy	reference	reference	03:00	0.96
19	patrickcates	reference	reference	03:08	0.63
20	C M Gilles	tracked	neutrino	03:17	0.26
21	Sheapey	tracked	reference	03:19	0.88
22	joelhames	reference	neutrino	03:25	0.21
23	MelindaE	tracked	neutrino	03:36	0.23
24	richard	reference	reference	03:36	0.89
25	LJCN	new_solver	neutrino	03:38	0.22
26	markdobell	reference	reference	03:38	1.06
27	Mark Three	reference	neutrino	03:38	0.38
28	Heyesey	reference	reference	03:39	1.08
29	Topical Tim	reference	reference	03:50	1.01
30	SimonAnthony	tracked	reference	03:57	1.0
31	glheard	reference	reference	03:57	0.9
32	mattj.allen	new_solver	reference	04:00	1.17
33	chindit	reference	reference	04:03	0.8
34	lickert	reference	reference	04:06	0.78
35	Glencairn	new_solver	neutrino	04:09	0.39
36	Kinghedger	reference	reference	04:10	0.92
37	David Crooks	tracked	neutrino	04:14	0.4
38	scrabbler	reference	reference	04:18	0.87
39	Umpire	reference	reference	04:20	1.1
40	xyster	tracked	reference	04:22	0.46
41	Golvellius	tracked	reference	04:24	1.32
42	MikeOsborne	reference	reference	04:24	1.36
43	Roscoe	reference	reference	04:27	0.68
44	Tom Stubbs	reference	reference	04:27	0.84
45	Strober	tracked	tracked	04:29	-0.13
46	tiggis	reference	reference	04:32	0.77
47	philjordan1147	reference	reference	04:33	0.78
48	canismiser	reference	reference	04:34	1.11
49	chriswords	tracked	tracked	04:35	0.16
50	MK76	reference	reference	04:36	1.38
51	tilbee	reference	reference	04:38	0.95
52	Jim Willis	reference	reference	04:40	1.01
53	John Walsh	tracked	tracked	04:40	0.37
54	alexh	reference	reference	04:41	0.69
55	trux	reference	reference	04:42	0.79
56	Honggui	reference	reference	04:45	0.77
57	AlanS	reference	reference	04:46	0.76
58	denislaw	reference	reference	04:46	0.52
59	lucyg43484	reference	reference	04:47	0.96
60	Liari	reference	reference	04:48	0.95
61	chriss	tracked	reference	04:50	0.76
62	andy	reference	reference	04:50	0.99
63	March	reference	reference	04:50	0.96
64	Paul Bacon	tracked	reference	04:52	0.55
65	Ed freshpot	reference	reference	04:53	0.92
66	andrewlake	reference	reference	04:54	0.99
67	LouWeed	reference	reference	04:55	1.07
68	d.middleton	reference	reference	04:56	0.55
69	pitcaithlie	reference	reference	04:58	0.9
70	Johninterred	new_solver	blog_solver	04:58	0.85
71	Dekkers	reference	tracked	05:04	0.18
72	Eddddddd	reference	reference	05:04	1.04
73	Osaem	new_solver	tracked	05:09	10.82
74	7dPenguin	reference	reference	05:10	0.81
75	andy_knott	reference	tracked	05:13	0.42
76	daulbs	reference	reference	05:14	1.72
77	M Bennett	new_solver	reference	05:14	1.45
78	Tibthorpe	reference	reference	05:14	0.58
79	PaulCooke	tracked	reference	05:15	0.98
80	fshephe	reference	reference	05:15	0.89
81	ChuckB	reference	reference	05:17	0.79
82	Squallaby	reference	reference	05:17	0.91
83	cdb_100	new_solver	reference	05:17	1.99
84	Zander	reference	reference	05:17	1.1
85	grape	tracked	reference	05:20	1.2
86	Penfold_61	reference	reference	05:21	0.74
87	alisonmorgan	new_solver	reference	05:21	1.52
88	footballblue	reference	tracked	05:21	0.12
89	Ease This Jam	reference	reference	05:22	1.5
90	neilr	reference	reference	05:28	0.87
91	MossDef	reference	reference	05:30	0.96
92	Spanna	reference	tracked	05:30	0.39
93	KET	reference	reference	05:31	0.87
94	cath23	reference	reference	05:32	0.54
95	Finzi	reference	reference	05:40	0.69
96	LuckOfLucien	new_solver	reference	05:41	1.21
97	Rabbitoh	reference	reference	05:42	1.94
98	george.plumbly	reference	reference	05:42	1.13
99	fishernick79	tracked	reference	05:43	1.14
100	Freemers	tracked	reference	05:45	1.13
101	Paul Hammond	reference	reference	05:45	0.89
102	Aly Duncan	reference	reference	05:45	1.11
103	Looch	reference	reference	05:47	1.09
104	howardwilde1	new_solver	reference	05:49	1.35
105	David of Sutton	new_solver	reference	05:49	1.58
106	SimonB	tracked	reference	05:49	0.47
107	chrismarch	tracked	reference	05:52	1.41
108	Encota	new_solver	reference	05:53	0.98
109	nina s	reference	reference	05:54	0.67
110	mw7000	reference	reference	05:54	1.46
111	mcrossib1	tracked	reference	05:55	1.47
112	Shabbo	reference	reference	05:56	1.05
113	MrChumley	reference	reference	05:57	0.55
114	GeorgeTz	reference	reference	05:57	0.54
115	Rosron	reference	reference	05:58	0.64
116	esmeralda	reference	reference	05:58	0.93
117	McBeak	reference	reference	05:58	1.14
118	Crossiant	reference	reference	05:59	1.41
119	Carol	reference	reference	06:01	1.03
120	Viscomte	reference	reference	06:02	0.56
121	Michael Dove	reference	reference	06:04	1.12
122	cmcnsmith	reference	tracked	06:04	0.45
123	Dzhigit	reference	reference	06:05	0.98
124	DunPangolin	reference	reference	06:06	0.78
125	JMbrow29	tracked	reference	06:14	1.2
126	RobR	tracked	reference	06:16	0.72
127	Aloysius	reference	reference	06:16	0.69
128	GMcD	reference	reference	06:16	0.93
129	Mike C	new_solver	reference	06:18	0.98
130	Adrian Cobb	new_solver	reference	06:21	1.31
131	npweston	tracked	reference	06:23	0.98
132	Tudds	reference	reference	06:23	0.99
133	jimwetzler	reference	reference	06:24	0.84
134	Curarist	tracked	tracked	06:25	0.86
135	hopkinb	reference	reference	06:27	1.32
136	Blackbeard	tracked	reference	06:29	1.79
137	Paul Matthews	new_solver	tracked	06:29	0.02
138	uvofiz	reference	reference	06:29	0.91
139	robinh	reference	reference	06:33	0.71
140	paul.whitehouse69	reference	reference	06:36	1.21
141	ilan	reference	reference	06:36	0.78
142	mandyroberts2007	tracked	reference	06:38	1.26
143	Kevin Gregg	reference	reference	06:40	0.87
144	PGooden	reference	reference	06:40	1.18
145	julian_w	reference	reference	06:49	1.12
146	Jeremy Weissmann	reference	reference	06:50	1.1
147	Ostralegus	tracked	reference	06:50	1.29
148	jon	reference	reference	06:51	1.16
149	James P	reference	reference	06:51	1.06
150	Riche	reference	reference	06:58	0.95
151	Kalakuta72	reference	reference	06:59	0.64
152	Obrador	new_solver	reference	07:01	0.92
153	DianeRS	reference	reference	07:02	1.04
154	benedick	reference	reference	07:06	0.64
155	Gussie	reference	reference	07:06	1.15
156	KenD51	reference	reference	07:07	0.49
157	rhi.andrew	tracked	reference	07:08	0.89
158	tds	tracked	reference	07:10	1.78
159	Pxspxs	new_solver	reference	07:10	0.99
160	chriswestontour	new_solver	reference	07:12	1.19
161	Julian Forbes	tracked	reference	07:14	0.65
162	Puzzleplease	reference	reference	07:14	0.91
163	Nangle	reference	reference	07:14	0.96
164	SlumdogEngineer	reference	reference	07:15	1.5
165	Andrew Whiffin	tracked	reference	07:19	1.13
166	Dvynys	reference	reference	07:20	0.86
167	valerian1967	tracked	reference	07:20	0.95
168	Mike Harper	reference	reference	07:27	0.95
169	martinphillips	reference	reference	07:32	0.63
170	banishspam	new_solver	reference	07:34	0.73
171	1234	reference	reference	07:37	0.78
172	ratterz	reference	reference	07:37	0.73
173	pc54	new_solver	tracked	07:40	0.27
174	pauliwan	tracked	reference	07:41	1.13
175	martinede	reference	reference	07:41	0.51
176	endafk	reference	reference	07:43	1.31
177	JE59	tracked	reference	07:43	0.95
178	bobanann	new_solver	reference	07:47	0.96
179	earlylight	reference	reference	07:48	1.06
180	auntflo	tracked	reference	07:49	0.87
181	ChrisBrea	reference	reference	07:50	1.34
182	Corymbia	reference	reference	07:50	1.17
183	gsriordan52	reference	reference	07:50	0.65
184	Crippens1	tracked	reference	07:51	1.22
185	TomHerbert	reference	reference	07:54	1.0
186	docg	tracked	reference	07:55	0.67
187	dec	tracked	reference	07:55	1.17
188	CrystalPip	tracked	reference	07:55	1.37
189	GMB	tracked	reference	07:57	1.38
190	frost	reference	reference	07:58	0.71
191	hazyfantazee	new_solver	reference	07:59	2.0
192	JanieP	new_solver	tracked	08:00	2.04
193	John Arnold	reference	reference	08:01	1.43
194	Desdeeloeste	new_solver	reference	08:03	0.71
195	robertbridge	tracked	reference	08:04	0.88
196	jaraab	reference	reference	08:06	0.7
197	paulcook1954	new_solver	reference	08:07	0.57
198	Edprof	reference	reference	08:08	1.05
199	nigelmzzz	tracked	reference	08:11	0.98
200	cerds	tracked	reference	08:13	0.88
201	m5harp	reference	reference	08:14	1.26
202	Templar Redux	reference	reference	08:16	0.86
203	crosswordian	reference	reference	08:19	0.96
204	timbo	reference	reference	08:21	1.19
205	plett11	reference	reference	08:26	1.56
206	richardCV22	new_solver	reference	08:26	0.84
207	puzzled1	tracked	neutrino	08:27	0.68
208	DamienKnapma	new_solver	reference	08:28	1.23
209	Cuppa378	tracked	reference	08:28	1.15
210	alastair52	reference	reference	08:29	1.97
211	nigel	reference	reference	08:30	0.96
212	crucihacker	new_solver	reference	08:34	1.0
213	mattindoha	reference	reference	08:35	0.64
214	Dr_Bob	tracked	reference	08:35	1.37
215	johndun	reference	reference	08:37	1.21
216	goblin	reference	reference	08:39	0.72
217	helen.strike1	new_solver	reference	08:42	1.9
218	Rowleyrag	new_solver	reference	08:42	0.54
219	Sheen	reference	reference	08:43	1.33
220	goldenpie	tracked	reference	08:43	1.35
221	Deezzaa	reference	reference	08:45	1.01
222	Claverton74	tracked	reference	08:46	0.63
223	Rowlie26	new_solver	reference	08:47	1.1
224	barracuda	reference	reference	08:48	0.99
225	john.brassey	tracked	reference	08:49	1.16
226	AndyLast	tracked	reference	08:51	1.31
227	vefatica	tracked	reference	08:51	0.48
228	kath	tracked	reference	08:52	0.79
229	vinyl12345	reference	reference	08:53	1.05
230	ryjones114	new_solver	reference	08:53	1.82
231	wwicksteed	tracked	reference	08:54	1.07
232	Doyler	tracked	reference	08:55	1.55
233	Mkgnao	tracked	reference	08:57	0.76
234	TonyN6	reference	reference	08:57	0.5
235	ulaca	reference	reference	08:57	1.07
236	Zabadak3	tracked	reference	08:59	0.75
237	paulwestside	tracked	reference	09:01	1.26
238	jemcd33	tracked	reference	09:04	1.15
239	OldSolver	tracked	reference	09:04	1.1
240	sue.cresswell	tracked	reference	09:06	0.74
241	luxtonj61	reference	reference	09:17	1.1
242	Yatton50	reference	reference	09:19	1.96
243	joe.mcgrane	new_solver	reference	09:22	1.22
244	Bambersheila55	new_solver	reference	09:23	0.84
245	Mudge	new_solver	reference	09:26	1.61
246	smalley552	tracked	reference	09:27	1.65
247	dr.shred	new_solver	reference	09:28	0.73
248	Laputan	tracked	reference	09:29	1.39
249	edwards.robert1	tracked	tracked	09:31	0.26
250	Nigel1953	new_solver	reference	09:31	1.58
251	raincloud	reference	reference	09:31	1.5
252	hemantyd	new_solver	reference	09:31	1.93
253	CoxBurglar	tracked	reference	09:32	1.1
254	CWM65	tracked	reference	09:34	1.39
255	Rubeculaw	tracked	tracked	09:38	-0.2
256	Jeeves	tracked	reference	09:41	1.0
257	nishadamri	tracked	reference	09:44	0.96
258	FelicityTT	tracked	reference	09:44	1.69
259	hookyt	tracked	reference	09:47	1.41
260	BinLinerBob	tracked	reference	09:47	1.76
261	Poff	new_solver	reference	09:56	1.35
262	BertieVII	tracked	reference	09:56	0.97
263	Mike Mansbridge	reference	tracked	09:57	-0.24
264	annikins	new_solver	reference	09:59	1.7
265	Pauline Minter	tracked	reference	10:01	1.66
266	nedf	tracked	reference	10:04	1.27
267	Chimblet Lyle	new_solver	reference	10:05	1.61
268	hipponym	tracked	reference	10:11	1.68
269	Birdingbob	tracked	reference	10:13	1.01
270	iholloway	tracked	reference	10:14	1.32
271	TripleDouble	new_solver	reference	10:19	1.41
272	Destime	tracked	reference	10:21	0.46
273	Currieface	new_solver	reference	10:22	1.44
274	Pendrov	tracked	reference	10:30	0.83
275	BletchleyReject	new_solver	blog_solver	10:38	0.47
276	Troothful	tracked	reference	10:41	1.5
277	alex.scordellis	tracked	reference	10:47	1.41
278	maisiemae	reference	reference	10:50	1.45
279	Rozz	tracked	reference	10:51	0.74
280	Jcal	tracked	tracked	11:09	2.05
281	MichaelE	tracked	reference	11:11	1.21
282	Rammy Trainor	new_solver	tracked	11:12	0.01
283	jackk.larg	tracked	reference	11:15	0.87
284	Cryptique	tracked	reference	11:20	1.52
285	suethepotterer	tracked	reference	11:21	0.99
286	branch	tracked	reference	11:24	0.9
287	Dr. Memory	tracked	reference	11:24	0.81
288	home.bright	tracked	reference	11:26	1.37
289	starstruck	new_solver	reference	11:32	1.07
290	youngbaz	new_solver	reference	11:33	0.71
291	paul.verney	new_solver	reference	11:33	0.57
292	WordPlodder	tracked	reference	11:33	0.87
293	Monkos	tracked	tracked	11:36	2.1
294	Struwa	tracked	reference	11:37	0.6
295	SlowSteady	tracked	tracked	11:41	0.36
296	simjt	tracked	reference	11:42	1.17
297	SMSEsq	new_solver	reference	11:49	1.42
298	Romulus66	new_solver	reference	11:57	1.86
299	JeffHobbs	tracked	tracked	11:57	3.12
300	pammar	tracked	reference	11:57	0.64
301	Nuck_the_king	tracked	reference	11:58	1.63
302	ifincham2	tracked	reference	12:05	1.25
303	Andrew E	new_solver	reference	12:11	1.29
304	potter_al	new_solver	reference	12:11	1.64
305	tyrotim	new_solver	reference	12:14	1.02
306	Rhys	tracked	reference	12:17	1.04
307	kapietro	tracked	reference	12:27	0.82
308	MartianAlien	new_solver	reference	12:29	0.79
309	mpbthorpe	new_solver	reference	12:29	1.23
310	ezoredfox	tracked	reference	12:38	1.55
311	chabuduo	tracked	reference	12:54	1.99
312	Dofray	reference	reference	12:55	1.46
313	flashman	tracked	blog_solver	12:58	1.23
314	alistair.boere	new_solver	reference	12:58	0.93
315	clivejharlow	new_solver	reference	13:06	1.02
316	anonymous	new_solver	tracked	13:06	4.26
317	phmfantom	new_solver	reference	13:07	0.79
318	Leon Steed	new_solver	tracked	13:11	2.31
319	Sonofjim	tracked	reference	13:13	1.45
320	albrecht1959	tracked	reference	13:13	1.09
321	andybannister	tracked	reference	13:30	1.63
322	Xebeq	tracked	reference	13:51	1.37
323	julzov	new_solver	tracked	13:53	-0.61
324	Dr. Venn	new_solver	tracked	13:54	2.07
325	Corbo	new_solver	reference	13:57	1.41
326	Merlin	new_solver	blog_solver	14:05	1.59
327	jarenstein	new_solver	tracked	14:09	2.93
328	pfalloon	tracked	reference	14:10	1.36
329	Winchelt	new_solver	reference	14:11	1.38
330	greta	new_solver	reference	14:17	1.01
331	rlowin2	new_solver	tracked	14:20	2.2
332	phcbarnes	new_solver	reference	14:23	0.55
333	Mozbo	new_solver	reference	14:31	0.73
334	Mendes	tracked	reference	14:38	1.26
335	william.horner	tracked	tracked	14:40	2.16
336	phatman	new_solver	tracked	14:50	2.24
337	Doofenschmirtz	tracked	blog_solver	15:02	1.26
338	140 Mandak 262 Jamuna	new_solver	reference	15:06	1.29
339	JanetP	new_solver	reference	15:09	0.71
340	JimAdelong	new_solver	reference	15:35	0.53
341	Guy Hatton	new_solver	reference	15:56	1.24
342	Clouseau	new_solver	reference	16:00	1.48
343	Holly O	new_solver	tracked	16:07	2.02
344	I like cheese	tracked	reference	16:16	1.62
345	Narayanan	new_solver	reference	16:49	0.8
346	kfb20	tracked	reference	16:55	1.91
347	Jayarem	tracked	tracked	17:01	2.24
348	thechan	new_solver	reference	17:01	1.85
349	intentional rounding	new_solver	reference	17:09	1.71
350	ginnythomson	tracked	reference	17:22	0.66
351	daverob	new_solver	reference	17:33	0.71
352	garethclwilson	new_solver	reference	17:36	1.12
353	Simon M	new_solver	reference	17:38	0.89
354	Masha	tracked	tracked	18:05	0.41
355	grannyH	new_solver	reference	18:20	0.87
356	TonyK	new_solver	reference	18:55	0.94
357	maryht	new_solver	reference	18:56	1.08
358	DaveH	tracked	reference	19:23	1.51
359	Jean in Oxford	new_solver	reference	19:29	1.3
360	keithandginnybirrell	new_solver	reference	19:34	1.87
361	wrekin	new_solver	reference	19:45	1.7
362	david.14587	new_solver	reference	20:14	1.18
363	The Real Steve Snackman	new_solver	reference	20:19	1.2
364	Winchelt618	tracked	reference	20:36	1.16
365	Hazelnut	new_solver	reference	20:44	0.53
366	mozbadel	new_solver	reference	21:04	1.07
367	deebeeem	new_solver	tracked	21:15	2.08
368	Geldart	new_solver	reference	22:19	0.87
369	danielbluebisson	new_solver	tracked	22:33	3.17
370	dominic.c-b	new_solver	reference	23:31	1.22
371	hod45pat	new_solver	reference	23:38	0.68
372	winelover	new_solver	reference	23:54	1.36
373	dan_tman	new_solver	tracked	23:56	2.1
374	Tired_commuter	new_solver	tracked	24:00	0.01
375	david	new_solver	reference	24:06	1.1
376	domski	new_solver	reference	24:14	1.19
377	paulmcl	tracked	tracked	24:17	1.87
378	Ajay	new_solver	reference	24:19	0.89
379	Pontypandy	new_solver	reference	24:23	1.53
380	philby	new_solver	reference	26:01	1.47
381	lazydays	tracked	reference	26:12	1.33
382	ian.shepherd	new_solver	reference	27:00	0.6
383	ttto	new_solver	tracked	27:40	0.26
384	Pompeydave	tracked	reference	27:50	0.54
385	shankar	new_solver	reference	29:06	1.21
386	prognosticat	new_solver	reference	31:36	1.8
387	Iz.S	new_solver	reference	32:17	0.63
388	42colin	new_solver	tracked	32:19	3.75
389	IanV	new_solver	reference	34:04	0.87
390	Sotogrande1	new_solver	tracked	34:28	2.77
391	Pudso	new_solver	tracked	36:47	2.73
392	mcfarl	new_solver	reference	40:46	0.83
393	edschrono	tracked	tracked	42:28	2.07
394	Aresbiscuits	new_solver	reference	44:27	1.44
395	Rebus_	new_solver	tracked	59:12	1.21