The Checker Maven

Three by Mac

For better or worse, today's Checker School episode isn't about a three-decker cheeseburger put out by a fast food establishment. Instead, it's a triple-decker set of positions by J. B. Macindoe, a fascinating progressive endgame study.

First, try the original:

WHITE

BLACK
Black to Play and Win

B:W24,20,19,17,13,K3:B12,K11,10,9,6,5.

If you are really good and you got it right, you went to this second configuration at some point:

WHITE

BLACK
Black to Play and Win

B:WK28,20,15:BK6,K5,K2.

And if you stayed on track (a bit easier this time), you came up with the following third situation:

WHITE

BLACK
Black to Play and Win

B:W20,K19,K3:BK11,K10,K6.

We suggest that in solving the problem, you start with the first diagram; if that's (as we expect) a tough piece of meat, try the second diagram; and if you can't slice that particular piece of cheese, see if you can shred the lettuce in the third diagram. But to digest the solutions, no secret recipes are needed; clicking on Read More will serve up the answers.



Solutions

Here are Ben Boland's solutions, commentary, and example game.

Diagram No. 1: 11-15---A, 3-7, 9-14, 7-3, 14-21, 3-7, 21-25, 7-14, 15-11, 14-18, 6-10, 18-23, 25-30, 23-27, 11-15*, 27-32, 30-26, 32-27, 26-22, 27-23, 22-17, 23-27, 15-18, 27-32, 17-14, 13-9, 10-15, 19-10, 14-7, 9-6, 7-10*, 6-1, 5-9, 32-28, 10-7, 1-6, 9-13, 6-2, 7-11, 2-6, 18-14, 28-32, 13-17, 32-27, 17-21, 27-23, 21-25, 23-26, 11-15, 6-1, 14-17*, 1-6, 25-30, 26-23, 17-14, 6-1, 30-25, 23-26, 14-9, 26-23, 25-21, 23-27, 21-17, 27-32, 17-14, 32-28, 15-11, 1-5, 9-6, 5-1, 6-10, 1-5, 12-16, 5-1, 10-15, 28-32, 14-10, 1-5, 16-19, 32-28, 10-14, 5-1, 11-7, 1-6, 7-2, 6-1, 14-17, 1-5, 2-6, 5-1, 6-9, 1-5, 17-14, 5-1, 9-5, 1-6, 14-10*, 6-1, 10-7, 1-6, 5-1, 6-9, 7-2, 9-14, 1-5, 14-10, 15-6, 24-15. Forms the second diagram.

Diagram No. 2: 5-9, 28-24, 9-14, 15-11, 6-10, 24-19, 14-18, 11-8, 18-15, 19-16, 2-7, 8-3, 15-11, 16-19, 7-2, 19-24, 2-7, 24-19. Forms the third diagram.

Diagram No. 3: 10-14, 19-24, 14-9*, 24-19, 9-5*, 19-24, 5-1*, 24-28, 6-10, 28-24, 10-15. Black Wins.

Game: 11-15, 23-19, 9-14, 22-17, 6-9, 17-13, 2-6, 25-22, 8-11, 29-25, 4-8, 22-17, 14-18, 27-23, 18-27, 32-23, 15-18, 23-14, 9-18, 24-20, 11-15, 17-14, 15-24, 28-19, 10-17, 21-14, 18-23, 25-22, 8-11, 22-18, 7-10, 14-7, 3-10, 26-22, 5-9, 30-25, 23-26---B, 18-15---C, 11-18, 22-15, 26-30, 25-21, 30-25, 15-11, 25-22, 11-7, 22-18, 7-3, 1-5, 31-27, 18-15, 27-24, 15-11, 21-17. Forms the first diagram. J. B. Macindoe, the Draught Board, April 1871.

A---Corrects W. Hay who continued; 9-14, 19-15, 11-18, 3-7. Drawn.

B---Forms No. 31 by W. Hay, the Draught Board, Aug. 1, 1869.

C---Hay stars this move. J. Donaldson in Draught Board, No. 159, Dec. 1870, shows 19-15 to lose, saying that this was hinted to lose by W. Hay.

W. Hay first gave the above position (Note B) as a draw. J. B. Macindoe then corrected Hay (see diagram at A), in the Draught Board, No. 96, March 1, 1870. W. Hay said he arrived at his position from an unpublished variation of the "Shuttle Game." He however did not give the game. Macindoe gave the above game in the New Series of the Draught Board, April 1871, Page 37.

The above positions may be found as No. 698, No. 144, and No. 168 in Lyman's Problem Book.

03/24/07 - Category: Problems - Printer friendly version
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