Previous Competition Problems

Here is my archive of previous competition problems.  A problem appearing here has not previously appeared in any book or magazine.  Apart from the first three, a problem is added to this section of my archive as soon as possible after its closing date. Its solution is also added and I don't accept further solutions.  The first three are different, for historical reasons.  Their solutions are not given and you can still have a go at them if you wish to add to your lifetime DD Master Points score.

Here is a list of links to the entire collection so far, in descending numerical order: 

[ Competition #171b ] [ Competition #171a ] [ Competition #83 ] [ Competition #82 ] [ Competition #81 ] [ Competition #80 ] [ Competition #79 ] [ Competition #78 ] [ Competition #77 ] [ Competition #76 ] [ Competition #75 ] [ Competition #74 ] [ Competition #73 ] [ Competition #72 ] [ Competition #71 ] [ Competition #70 ] [ Competition #69 ] [ Competition #68 ] [ Competition #67 ] [ Competition #66 ] [ Competition #65 ] [ Competition #64 ] [ Competition #63 ] [ Competition #62 ] [ Competition #61 ] [ Competition #60 ] [ Competition #59 ] [ Competition #58 ] [ Competition #57 ] [ Competition #56 ] [ Competition #55 ] [ Competition #54 ] [ Competition #53 ] [ Competition #52 ] [ Competition #51 ] [ Competition #50 ] [ Competition #49 ] [ Competition #48 ] [ Competition #47 ] [ Competition #46 ] [ Competition #45 ] [ Competition #44 ] [ Competition #43 ] [ Competition #42 ] [ Competition #41 ] [ Competition #40 ] [ Competition #39 ] [ Competition #38 ] [ Competition #37 ] [ Competition #36 ] [ Competition #35 ] [ Competition #34 ] [ Competition #33 ] [ Competition #32 ] [ Competition #31 ] [ Competition #30 ] [ Competition #29 ] [ Competition #28 ] [ Competition #27 ] [ Competition #26 ] [ Competition #25 ] [ Competition #24 ] [ Competition #23 ] [ Competition #22 ] [ Competition #21 ] [ Competition #20 ] [ Competition #19 ] [ Competition #18 ] [ Competition #17 ] [ Competition #16 ] [ Competition #15 ] [ Competition #14 ] [ Competition #13 ] [ Competition #12 ] [ Competition #11 ] [ Competition #10 ] [ Competition #9 ] [ Competition #8 ] [ Competition #7 ] [ Competition #6 ] [ Competition #5 ] [ Competition #4 ] [ Competition #3 ] [ Competition #2 ] [ Competition #1 ]

© Hugh Darwen, 2018

Date last modified: 04 June, 2019