The Checker Maven

The World's Most Widely Read Checkers and Draughts Publication
Bob Newell, Editor-in-Chief


Published every Saturday morning in Honolulu, Hawai`i

Noticing missing images? An explanation is here.



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The Engineer

trainengineercc0.x.jpg
Pexels CC0

Although your editor's degrees are in engineering, he's definitely not the kind of engineer shown above. Those engineers certainly earn a very nice living, and we suspect that quite a number of them play checkers while on the road.

Today's little problem was published decades ago by someone who simply called himself "The Engineer." We have no further information on who he might have been. Did he design bridges? Refine oil? Drive a train? Perhaps someone out there on the internet might know, but for now it remains an intriguing mystery.

His checker problem, though, won't stay a mystery for long.

WHITE
null
BLACK
Black to Play, What Result?

B:WK31,28,27,19:B20,18,12,K10.

Despite the sometimes unfair (and annoying!) "what result" terms, the problem is fairly easy if you take an engineering approach and do a little organized analysis. No slide rules required, just some orderly checker thinking. Do your calculations and then click on Read More to see the solution.null

[Read More]
05/26/18
You can email the Webmaster with your comments on this article.

A Bit of a Break

needabreakai.x.jpg

Sometimes, it all gets to be a little too much, and we need a break. We're not sure what the poor young lady in the picture above is working on; could she perhaps be doing a manual transcription of the 10-piece endgame database?

Today we have a speed problem, provided by regular contributors Lloyd and Josh Gordon, that will give you a break in checker terms: it's definitely on the easy side. While some may disagree, we believe that easy problems have a clear purpose: to improve both sight-solving skills and speed of analysis.

WHITE
null
BLACK
Black to Play and Win

B:W32,30,19,K15,K6:BK26,24,23,21,12,7.

See how quickly you can solve this one, and then break over to Read More to verify your solution.null

[Read More]
05/05/18
You can email the Webmaster with your comments on this article.

A 'Maid of the Mill' Surprise

morrisdancerscc0.x.jpg
Needpix.com CC0

Above, a group of Morris Dancers are performing and one dance often performed by such groups is Maid of the Mill. While the dance is itself well known, Maid of the Mill spans many genres: dance, art, literature ... and draughts.

In our ongoing serialized story, Three Move Opening: A Checker Romance, our protagonist made an unfortunately timed reference to the Maid of the Mill opening. Today, we'd like to offer something quite substantial in the play of that opening.

The following is based on the 15th game of the 2014 World Championship Go As You Please match between Sergio Scarpetta (Black) and Ron King (White). The game, as played, ended in a draw, but there was an interesting winning possibility for Black.


1. 11-15 22-17
2. 8-11 17-13
3. 15-18

Forms Maid of the Mill.


3. ... 23x14
4. 9x18 21-17
5. 10-15 25-21

24-20 is definitely better, but it isn't clear that this move loses.


6. 4-8 26-23
7. 18-22 24-19
8. 15x24 28x19
9. 11-16

Back into the KingsRow opening book with a pull for Black, but not clearly a win.


9. ... 27-24
10. 8-11 24-20
11. 7-10 32-28
12. 3-7 28-24
13. 11-15 20x11
14. 7x16 24-20

23-18 also draws.


15. 15x24 20x11
16. 12-16 11-8

Loses; 23-18 should draw.

WHITE
null
BLACK
Black to Play and Win

B:W31,30,29,23,21,17,13,8:B24,22,16,10,6,5,2,1.

Mr. Scarpetta didn't find the win. Can you? We realize that's a lot to ask, and in fact it's a very difficult problem, but the solution is as surprising as it's good, and we think that any effort you put into this problem will be amply repaid. So do try it, and then click on Read More to see the answer.null

[Read More]
04/28/18
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A Possible Misstep

ladyfallscc4.x.jpg
Roboflow Universe CC 4.0

Snow can still come in April in many parts of North America, and if it does, you had best be careful and not suffer the type of mishap that of the unfortunate lady above.

This month's speed problem doesn't have a time limit and doesn't use the Javascript clock. Now, it's not a particularly hard problem, it's just that ... well, there's a way to misstep and slip, even if it doesn't involve snow and ice, and then things get a little more complicated.

Perhaps it's simplest to show you the diagram and let you find out for yourself.

WHITE
null
BLACK
Black to Play and Win

B:W32,30,28,27,25,23,19,15,14,13:B21,20,17,12,8,7,6,5,3,1.

Watch your step, and solve this step by step. The next step? Clicking on Read More to check your solution.null

[Read More]
04/07/18
You can email the Webmaster with your comments on this article.

Thinking It Over

thinkingitover.jpg
Thomas Waterman Wood CC0

The image above is found in the Cleveland Museum of art. We don't know what the old gent is musing upon; could that be a newspaper with a checker problem that he's considering?

Whatever he's contemplating, it's unlikely that it's today's checker problem, another fine entry sent to us by master composer Ed Atkinson. He calls it Thinking It Over. Let's let him describe it in his own words.

"Here is the problem. It is only the unusual setting and the first few moves that are original. The resulting end game can be traced back through the centuries to the very first problem published in English, a 262 year time line.

The references can be found in Boland's Border Classics, page 59 and Famous Positions, page 8. Closely related material was published by several in the mid 19th century."

Thinking It Over
BLACK
null
WHITE
White to Play and Win

W:W27,K22,17,15,9:BK29,K25,7.

What's this? White is up two pieces, so where's the problem? But it won't take you long to realize that White's big advantage is greatly at risk, and getting the full score is anything but easy.

Okay, you know what we're going to say: think it over, and find the winning moves. As often is the case, the key is to find the right first move. After you've given this enough thought, think about clicking on Read More to see Ed's solution and notes.null

[Read More]
03/31/18
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Find Both Solutions

quadraticcc0.x.jpg
Pitix at English Wikipedia CC0

You probably learned in basic math classes that any quadratic equation has dual solutions, though they may not be unique, and when solving such equations, you were surely asked to find both solutions.

But as we've noted before, in checker problem competitions, "dual" solutions are frowned upon; a composition should have a but a single path to correctness. But with our speed problems, and with a mind to improving over the board visualization skills, sometimes a problem with a "dual" can be of value --- if you can find both solutions.

The following problem was sent to us by regular contributors Lloyd and Josh Gordon of Toronto, who developed it in conjunction with noted contemporary problemist Bill Salot. It has a dual solution.

WHITE
null
BLACK
Black to Play and Win

B:W18,19,21,23,26,27,29:B5,9,10,11,12,14,17.

Can you find both paths to victory? You'll get half credit for finding one of them, but full credit only if you work out both. The challenge is fair in that one solution is not simply a variant of the other.

Give this at least a "couple" of tries, and then click on Read More to see how you've done.null

[Read More]
03/03/18
You can email the Webmaster with your comments on this article.

Patterns

patternscc2.x.jpg
Roberlan Borges CC BY-ND 2.0

Ed Atkinson, of Harrisburg, Pennsylvania, is well-known in the checker community as a top player and skilled problemist. He is also, we're proud to say, a regular Checker Maven reader and occasional correspondent.

Ed offered us an original problem for publication and as you might expect, it's a dandy. He calls it Patterns, and you'll see why if you find the winning moves.

BLACK
null
WHITE
White to Play and Win

W:W12,16,17,29,K1,K8:B2,3,10,15,26,27.

You'd think White would have an easy win here; after all, he's got two kings and Black has none. But White looks a bit crowded around Black's single corner, and the win isn't at all easy to find. This is a top-notch, difficult problem with a rewarding solution. Can you find the pattern?

See what you can arrange, and then click on Read More to check your work.null

[Read More]
02/17/18
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The Depths of Winter

deepwintercc0.x.jpg
PickPik CC0

North America is in the depths of winter once again; it's the time of year when there's been enough winter weather that you really, really want spring to come. But you'll have to wait another eight weeks or so for that.

Fortunately, checkers never gets tiresome, and if you've got to be indoors, what better way than with a hot beverage and a fine checker study? The one below, attributed to old-time player Charles Hefter, is surprisingly good.

WHITE
null
BLACK
Black to Play and Win

B:W19,18:BK20,K17.

Looks easy, doesn't it? Black has two kings and White has but two ordinary men. But in fact winning this position requires careful play.

Can you get the full score or will you tire of the effort? Of course you won't, and clicking on Read More will allow you to check your solution.null

[Read More]
02/10/18
You can email the Webmaster with your comments on this article.

Two For The Price Of One

faussesolde.x.jpg

Two-for-the-price-of-one promotions are certainly popular in the world of marketing, making the buyer believe they're getting a good deal. Sometimes you do get a good price, and at other times (such as in the photo above), not so much. We occasionally refer to some bad deals as giving you "fifty percent off twice the price" or what is known in French as a "fausse solde."

But to start off February we have, indeed, two checker problems for the price of one, and it's definitely a good deal. (Not that you ever have to pay to read The Checker Maven, of course.)

The first situation is a true speed problem, and a rather nice one sent to us by regular contributors Lloyd and Josh Gordon. It's not terribly hard, probably of the 30 second variety.

Diagram 1
BLACK
null
WHITE
White to Play and Draw

W:W32,K21,10,7,K2:BK22,18,K15,3,1.

But what is interesting, though, is that if White plays 2-6 the game is lost, yet that's the move one might make reflexively. This one is somewhat longer and a bit more difficult, and can't really be called a speed problem.

Diagram 2
WHITE
null
BLACK
Black to Play and Win

B:W32,K21,10,7,K6:BK22,18,K15,3,1.

Don't sell out; instead, double down on these two problems, then click on Read More to see the solutions.null

[Read More]
02/03/18
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The New Year Has Arrived

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PxHere CC0

The New Year has sped in with a bang. The holidays are over and it's back to work and back to school.

We hope your "work" will include your checker game, and to that end we have a speed problem provided by regular contributors Josh and Lloyd Gordon of Toronto. We won't run our Javascript clock this time, as we think you should be allowed at least a minute or two to solve it. We'll even give you a hint: Read the first sentence of this column again.

WHITE
null
BLACK
Black to Play and Win

B:WK11,13,17,18,21,28,30:B5,6,9,12,19,K27,K31.

Can you rush to a solution and work out the winning moves? When you've got it, click on Read More to see the solution.null

[Read More]
01/06/18
You can email the Webmaster with your comments on this article.

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The Checker Maven is produced at editorial offices in Honolulu, Hawai`i, as a completely non-commercial public service from which no income is obtained or sought. Original material is Copyright © 2004-2026 Avi Gobbler Publishing. Other material is public domain, AI generated, as attributed, or licensed under CC1, CC2, CC3 or CC4 and the various CC options. Information presented on this site is offered as-is, at no cost, and bears no express or implied warranty as to accuracy or usability. You agree that you use such information entirely at your own risk. No liabilities of any kind under any legal theory whatsoever are accepted. The Checker Maven is dedicated to the memory of Mr. Bob Newell, Sr.

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