Search found 209 matches

by David Williams
Thu Apr 02, 2020 8:52 pm
Forum: General Chat
Topic: Announcing mate
Replies: 42
Views: 1455

Announcing mate

There's another thread with a game from 1922, where white announced mate in six, and giving the line. Does this ever happen nowadays? Is it even permitted? If not, what would be the penalty? And, if someone does announce a mate in six, can he be forced to play that line? Suppose your opponent does t...
by David Williams
Sun Mar 15, 2020 12:34 pm
Forum: General Chat
Topic: Covid-19 - Suspend Chess Immediately
Replies: 340
Views: 14107

Re: Covid-19 - Suspend Chess Immediately

The difference in 'herd immunity' % lies in the differences in rate (R) of transmission of infection. Where R = 0, there is no transmission; where R = 0.99999, the infection will swiftly die out. But where R = 1.00001, the infection will expand exponentially in due course. So R = 1 is the baseline ...
by David Williams
Sat Mar 14, 2020 2:44 pm
Forum: General Chat
Topic: Covid-19 - Suspend Chess Immediately
Replies: 340
Views: 14107

Re: Covid-19 - Suspend Chess Immediately

The problem with a vaccine isn't so much going to be producing candidates. You're going to be giving the thing to hundreds of millions of people. So you have to test it, and that means really testing it, or you could easily enough end up doing more harm than good. And it's hard enough to get people...
by David Williams
Sat Mar 14, 2020 12:27 am
Forum: General Chat
Topic: Covid-19 - Suspend Chess Immediately
Replies: 340
Views: 14107

Re: Covid-19 - Suspend Chess Immediately

The thing I find hard to visualise here is the end game. Under what circumstances do things start up again? The virus is surely never going to disappear completely. If you've never had it you're always going to be vulnerable to it, and there will always be people out there you can catch it off. Ther...
by David Williams
Sat Jan 11, 2020 4:08 pm
Forum: ECF Matters
Topic: Membership Doppelgangers
Replies: 9
Views: 776

Re: Membership Doppelgangers

Could you take everyone to the ECF Grading Database search page for their surname, graded and ungraded, and ask "Is any of these people you?" Or even "Are any of these people you?" if it's an ongoing problem!
by David Williams
Fri Mar 29, 2019 5:05 pm
Forum: General Chat
Topic: Is this a win?
Replies: 34
Views: 2813

Re: Is this a win?

All I can say is that I think you did the right thing. You say that in future if you win on time because your opponent is so bone-headed or ignorant of the rules that he doesn't even ask you for a draw, that you will claim the win. Nothing wrong with that in my book, but if my actions have unwitting...
by David Williams
Fri Mar 29, 2019 4:25 pm
Forum: General Chat
Topic: Is this a win?
Replies: 34
Views: 2813

Re: Is this a win?

No, I think I'm trying (and failing?) to make the case that what happened in the actual game was essentially the same thing in terms of its potential effect on the player whose flag fell. A momentary distraction wondering whether he could claim an extra two minutes, and it's too late to claim the dr...
by David Williams
Fri Mar 29, 2019 8:40 am
Forum: General Chat
Topic: Is this a win?
Replies: 34
Views: 2813

Re: Is this a win?

It might not be ethical if that was done on purpose. In my game, I was blitzing moves too - hence not noticing the square was covered. I let go of the piece briefly, instantly realized and instantly moved to a legal square. I didn't gain any benefit. He had 2 seconds or so left, so it changed nothi...
by David Williams
Fri Mar 29, 2019 12:39 am
Forum: General Chat
Topic: Is this a win?
Replies: 34
Views: 2813

Re: Is this a win?

When you reach the situation where one player is massively ahead on material but with virtually no time, the player with no time will be moving instantaneously, often before the other player has pressed his clock. Is it ethical for the player with more time to play an illegal move and not press the ...
by David Williams
Thu Feb 14, 2019 3:32 pm
Forum: General Chat
Topic: Enforcing rules in League chess
Replies: 29
Views: 2068

Re: Enforcing rules in League chess

There are at least some rules which cover these situations, even if their application is not straightforward in league chess. The one I think is more difficult is the last game to finish, in a mutual time scramble, with both teams gathered round the board. And someone points out that a flag has fall...
by David Williams
Fri Jan 25, 2019 12:39 am
Forum: 4NCL
Topic: How Many Times ?
Replies: 13
Views: 2105

Re: How Many Times ?

John Upham wrote:
Thu Jan 17, 2019 10:21 am
Camberley Chess Club has nothing whatsoever to do with Camberley Juniors.
Maybe they should call themselves Spirit of Camberley Juniors.
by David Williams
Wed Jan 23, 2019 3:49 pm
Forum: General Chat
Topic: Incremental controls - the `unlimited` game.
Replies: 39
Views: 2937

Re: Incremental controls - the `unlimited` game.

There was an attempt to introduce it on Merseyside in Div 1 several years back, optional if both teams agreed, to be played on all boards. A couple of teams didn't have digital clocks, and were also unwilling to play it in away games because they would be unfamiliar with it, and therefore at a disad...
by David Williams
Mon Jan 21, 2019 12:31 am
Forum: General Chat
Topic: Todays Chess Quest.
Replies: 20
Views: 1528

Re: Todays Chess Quest.

If Tal and Stein both thought it was a draw when they concocted it, why couldn't they just play it out anyway? The worst that happens is that Tal looks to have missed an opportunity - which he supposedly did anyway when he varied. Do grandmasters really discuss each others games at length while in p...
by David Williams
Thu Dec 13, 2018 8:40 am
Forum: General Chat
Topic: Under promotion to a bishop.
Replies: 19
Views: 1821

Re: Under promotion to a bishop.

Just to put this one to bed. [FEN " 8/p3B2p/1P5P/3P4/5r2/3k4/8/6K1 "] 1. b7 Rg4+ 2. Kf2 Rg8 3. d6 Kc4 4. d7 Kb5 5. d8=Q Rd8 6. Bd8 Ka6 The stalemate position is easy enough for the composer to visualise, but to add just the two h pawns, to leave a position where two dark square bishops win, but one ...