This is just a test post using a new computer.
My old Samsung laptop seized up, apparently due to a faulty disc.
The new one is a Lenovo laptop with Windows 10 and WiFi connection.
It is taking me a while to get used to and to transfer files from the old machine.
This seems to have worked so far!
Monday, 20 January 2020
Sunday, 8 December 2019
Crewe Chess Congress
I forgot to post that I entered the Crewe Chess Congress on 27-29 September and won a grading prize for a 3.5 score in the Minor section. Since then I've only played in the Club and in a few team matches, away to other local clubs at Newcastle and Cheddleton and Meir. I was thinking of going in for other tournaments but the cost of travel and accommodation is getting prohibitive. I'm not sure if I will get to one of the Hastings tournaments after Christmas or in the New Year.
Wednesday, 2 October 2019
Knight's Tours Notes in 12 PDFs
On 26 September I published this version of my "Knights Tour Notes" in the form of 12 PDF monographs that can be downloaded from my publications page. I am really pleased, and indeed relieved, that I have been able to get this finished. Though new historical information has since come to light that makes part of it out of date already!
http://www.mayhematics.com/p/p.htm
Knight's Tour Notes by G. P. Jelliss
1 — Theory of Moves
2 — Walker Tours
3 — Shaped & Holey Boards
4 — Oblong Boards
5 — Odd & Oddly Even Boards
6 — Geometry of Chessboard Knight Tours
7 — Symmetry in Chessboard Knight Tours
8 — Octonary & Quaternary Pseudotours
9 — Magic Knight Tours
10 — Augmented Knight & Leaper Tours
11 — Alternative Worlds
12 — Chronology & Bibliography
This series of 12 monographs, contain much of the material from my Knight's Tour Notes web-pages. It was orignally proposed to publish it in book form but has proved too much to reproduce that way. It may be possible to produce a shorter book, in a more popular style, if a publisher can be found.
http://www.mayhematics.com/p/p.htm
Knight's Tour Notes by G. P. Jelliss
1 — Theory of Moves
2 — Walker Tours
3 — Shaped & Holey Boards
4 — Oblong Boards
5 — Odd & Oddly Even Boards
6 — Geometry of Chessboard Knight Tours
7 — Symmetry in Chessboard Knight Tours
8 — Octonary & Quaternary Pseudotours
9 — Magic Knight Tours
10 — Augmented Knight & Leaper Tours
11 — Alternative Worlds
12 — Chronology & Bibliography
This series of 12 monographs, contain much of the material from my Knight's Tour Notes web-pages. It was orignally proposed to publish it in book form but has proved too much to reproduce that way. It may be possible to produce a shorter book, in a more popular style, if a publisher can be found.
Tuesday, 24 September 2019
Magic Knight Tour 12x10
This is formed by simply adding a braid to one of Awani Kumar's recently found 12x6 magic tours.
The file and rank sums are 605 and 726.
The file and rank sums are 605 and 726.
Non-Crossing Knight Tour
I've been doing some more work on knight tours.
This is the best I've found for a closed non-crossing knight tour on 32x32 board.
820 moves which is 80% coverage.
This is the best I've found for a closed non-crossing knight tour on 32x32 board.
820 moves which is 80% coverage.
Monday, 26 August 2019
Update for June and July
I seem to have missed a month again.
On 26 June I played in a 5-round Blitz tournament at the Crewe Chess Club. Forget result.
On 27 June my computer website sub was due. It is just under £60 on a standing order, so OK.
On 30 June I reinstalled the scanner on my computer and began to scan material on knight's tours, beginning with a paper by Eggleton & Eid and the Retrograde Analysis of Dawson and Hundsdorfer that I have been meaning to copy for some time. It has now been uploaded to my website. I also gave it a mention on Alexander George's chessproblemnet pages.
On 10 July I renewed my ECF membership.
On 23 July as a member of a Crewe team I was taken by car to play in a special Rapid Play match at the Town Crier in Chester. I was on the bottom board (12) but fortunately managed to win both my games (as Black and White against the same opponent).
My ECF grade for rapid play is now up to 92 though my normal grade has dropped drastically to 66.
Addendum: I seem to have forgotten that I played in a local Rapid Play Tournament organised by the Crewe Chess Club and held at the Ibis Hotel on 19 May. In that I won a grading prize. The results are reported here: https://crewechessclub.co.uk/congress-results-2017/ The key to rapid play I find is to keep to openings you know quite well, but the opponent may not be familiar with. This enables one to build up a time advantage early on.
On 26 June I played in a 5-round Blitz tournament at the Crewe Chess Club. Forget result.
On 27 June my computer website sub was due. It is just under £60 on a standing order, so OK.
On 30 June I reinstalled the scanner on my computer and began to scan material on knight's tours, beginning with a paper by Eggleton & Eid and the Retrograde Analysis of Dawson and Hundsdorfer that I have been meaning to copy for some time. It has now been uploaded to my website. I also gave it a mention on Alexander George's chessproblemnet pages.
On 10 July I renewed my ECF membership.
On 23 July as a member of a Crewe team I was taken by car to play in a special Rapid Play match at the Town Crier in Chester. I was on the bottom board (12) but fortunately managed to win both my games (as Black and White against the same opponent).
My ECF grade for rapid play is now up to 92 though my normal grade has dropped drastically to 66.
Addendum: I seem to have forgotten that I played in a local Rapid Play Tournament organised by the Crewe Chess Club and held at the Ibis Hotel on 19 May. In that I won a grading prize. The results are reported here: https://crewechessclub.co.uk/congress-results-2017/ The key to rapid play I find is to keep to openings you know quite well, but the opponent may not be familiar with. This enables one to build up a time advantage early on.
Tuesday, 11 June 2019
Eye Operation
Early this morning (Tuesday) I went to Leighton Hospital for an operation on my left eye to remove a cataract. This seems to have been successful so far, though it will probably take a month to get used to it. The operation itself was not a very pleasant experience. The eye itself was anaesthetised and the rest of my face covered by a cloth. Although I can now see with the left eye the image does not align with the right eye, but I suppose this will right itself eventually.
Last Wednesday (5th June) I had to call in a Locksmith since I've had increasing difficulty in getting back into the flat and was afraid of getting locked out. Replacing the lock cost me £136.80, but it does now open very smoothly. Leaders, the estate agents seem to think I should have called them first, but they haven't responded on other problems.
Back on 23 April I complained about the light in the wash room flickering, and they said they would contact the Landlords about it, but nothing has happened. I can't fix it myself as it is not clear how it is held up or comes apart to reveal the type of light, which may be a fluorescent tube type.
All the lights in the flat and in the hallway are very old and really need replacing. On Saturday the last of the old bulbs in the front room lighting failed. They are tiny incandescent bulbs no longer made. I replaced two in the other fitting a while ago with LEDs which don't really line up with the reflector plates. Another light just inside the door has never worked, and the light in the bedroom lacks the ring that is needed to hold up a lamp shade.
All these little irritations add up, but generally I am happy with the flat.
Update: 26 August 2019
The Estate Agents, acting for the Landlord, arranged for Sykes Electrical to come and fix all the lights on 18 June, which was done very quickly. They also seem to have reimbursed me for the cost of the lock repair.
Also I was signed off at the Eye Clinic on 29 June, and had the lenses replaced in my glasses by Vision Express on 22 August. So things are looking better.
Last Wednesday (5th June) I had to call in a Locksmith since I've had increasing difficulty in getting back into the flat and was afraid of getting locked out. Replacing the lock cost me £136.80, but it does now open very smoothly. Leaders, the estate agents seem to think I should have called them first, but they haven't responded on other problems.
Back on 23 April I complained about the light in the wash room flickering, and they said they would contact the Landlords about it, but nothing has happened. I can't fix it myself as it is not clear how it is held up or comes apart to reveal the type of light, which may be a fluorescent tube type.
All the lights in the flat and in the hallway are very old and really need replacing. On Saturday the last of the old bulbs in the front room lighting failed. They are tiny incandescent bulbs no longer made. I replaced two in the other fitting a while ago with LEDs which don't really line up with the reflector plates. Another light just inside the door has never worked, and the light in the bedroom lacks the ring that is needed to hold up a lamp shade.
All these little irritations add up, but generally I am happy with the flat.
Update: 26 August 2019
The Estate Agents, acting for the Landlord, arranged for Sykes Electrical to come and fix all the lights on 18 June, which was done very quickly. They also seem to have reimbursed me for the cost of the lock repair.
Also I was signed off at the Eye Clinic on 29 June, and had the lenses replaced in my glasses by Vision Express on 22 August. So things are looking better.
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