Climb 15
Designed and made by Minoru Abe, circa 1985.
(cardboard box 7+7/8" x 5.5" x 3/4" with
wood tray and 15 wood pieces, 7+7/16" x 5+1/8" x 9/16")
The puzzle has these pieces (a second red T-piece is a keeper piece to be removed):
The directions give four starting positions for the problem of moving the red T-piece to the top:
Problem 1
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Problem 2
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Problem 3
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Problem 4
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These four problems do not place any constraints on the other pieces of a final position.
Here we also consider what we refer to as Problem 2A,
which amounts to moving up the T-piece together with the two squares next to it
and dropping down the remainder of the starting position:
Climb 15 Solution Problem 1
Here is every other step of a solution of
104 rectilinear moves
for Climb 15 problem 1:
Climb 15 Solution Problem 2
Here is every third step of a solution of
132 rectilinear moves
for Climb 15 problem 2:
Climb 15 Solution Problem 2A
Here is every third step of a solution of
173 rectilinear moves
for Climb 15 problem 2A:
Climb 15 Solution Problem 3
Here is every other step of a solution of
101 rectilinear moves
for Climb 15 problem 3:
Climb 15 Solution Problem 4
Here is every third step of a solution of
148 rectilinear moves
for Climb 15 problem 4: