U.S. patent number 3,608,906 [Application Number 05/045,971] was granted by the patent office on 1971-09-28 for multisided value-coded puzzle pieces and supports therefor.
Invention is credited to Marc Odier.
United States Patent |
3,608,906 |
Odier |
September 28, 1971 |
**Please see images for:
( Certificate of Correction ) ** |
MULTISIDED VALUE-CODED PUZZLE PIECES AND SUPPORTS THEREFOR
Abstract
A puzzle is provided in which identical planar multiside puzzle
pieces carrying a value taken from M possible values at each one of
its apices. A support which is preferably a polyhedron is provided
and has portions adapted to receive the pieces such that the
completed puzzle formed by the pieces arranged on the portions of
the polyhedron is substantially that of the polyhedron. According
to the preferable rules of the puzzle, the pieces are to be placed
on the support in such a manner that in each of the groups of
juxtaposed apices, the value carried by each apex is the same as
that carried by each of the other apices juxtaposed thereto.
Further, the number of puzzle pieces is preferably limited so that
all the combinations of M values taken N by N are produced once and
only once by the number pieces.
Inventors: |
Odier; Marc (Paris, 16e,
FR) |
Family
ID: |
9035928 |
Appl.
No.: |
05/045,971 |
Filed: |
June 15, 1970 |
Foreign Application Priority Data
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|
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Jun 17, 1969 [FR] |
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6920254 |
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Current U.S.
Class: |
273/157R;
D21/479; 273/146; 273/282.2; 446/85; 52/DIG.10; 273/239;
273/294 |
Current CPC
Class: |
A63F
9/12 (20130101); Y10S 52/10 (20130101); A63F
2009/1212 (20130101) |
Current International
Class: |
A63F
9/06 (20060101); A63F 9/12 (20060101); A63F
9/00 (20060101); A63f 009/06 () |
Field of
Search: |
;273/13A,13AD,135A,135AD,156,157R,146 ;46/24,25,30,DIG.1
;35/18A,72 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Other References
Zominoes Advertisement, Playthings Magazine, Dec. 1963, page 41,
copy in Gp. 334 273/137B.
|
Primary Examiner: Oechsle; Anton O.
Claims
I claim:
1. A puzzle of the type comprising at least one group of
substantially identical and planar multisided puzzle pieces wherein
each apex of each piece carries a value taken from M possible
values, in combination with a support means adapted to receive at
least some of said pieces in side-by-side relation so that when all
the pieces adapted to be received by said support means are in
place thereon, said pieces form a three-dimensional space-enclosing
figure.
2. A puzzle as claimed in claim 1, wherein the support means for
supporting at least some of the pieces of said group in
side-by-side relation is such that the three-dimensional
space-enclosing figure is a polyhedron.
3. A puzzle as claimed in claim 2, wherein the pieces are formed as
regular polygon and the polyhedron as a regular polyhedron.
4. A puzzle as claimed in claim 2, wherein the pieces are formed as
regular polygon and the polyhedron as an irregular polyhedron.
5. A puzzle as claimed in claim 4, wherein the irregular polyhedron
has at least one reentrant apex adapted to receive puzzle pieces
thereon.
6. A puzzle as claimed in claim 3, wherein the support means is a
three-dimensional space-enclosing figure of substantially the same
dimensions and shape as the three-dimensional space-enclosing
figure formed by the pieces.
7. A puzzle as claimed in claim 6, wherein the support means is a
body having portions of the same shape and dimensions as the pieces
and adapted to receive the pieces thereon.
8. A puzzle as claimed in claim 7, wherein the pieces and the
portions include cooperating means for securing the pieces in
position on the portions of the support means.
9. A puzzle as claimed in claim 8, wherein the cooperating means
comprise forming at least part of each portion and each piece of
magnetic material.
10. A puzzle as claimed in claim 9, wherein the magnetic material
for one of the pieces and the portions is ferrite in a binder.
11. A puzzle as claimed in claim 8, wherein the cooperating means
comprise recesses and cooperating projecting portions adapted to be
received matingly therein.
12. A puzzle as claimed in claim 1, wherein the support means
comprises at least two polyhedrons adapted to be secured to one
another thus forming a combined support.
13. A puzzle as claimed in claim 1, wherein the puzzle pieces have
a value sequence comprising the values of each of its apices taken
in a predetermined reading order and wherein the pieces are
reversible thus effecting a certain number of additional pieces by
their reversal owing to the predetermined reading order.
14. A puzzle as claimed in claim 1, wherein there are more than one
identical support means and the number of pieces is sufficient for
completing the puzzles of all the supports.
15. A puzzle of the type comprising at least one group of
substantially identical and planar N-sided puzzle pieces wherein
each apex of each piece carries a value taken from M possible
values, the number of the pieces of said group being such that all
the combinations of M values taken N by N are produced once and
only once by the pieces of said group, in combination with a
support means adapted to receive at least some of said pieces in
side-by-side relation so that when all the pieces adapted to be
received by said support means are in place thereon said pieces
form a three-dimensional space-enclosing figure.
16. A puzzle as claimed in claim 12, further comprising at least
one additional group of substantially identical and planar N'-sided
puzzle pieces and each carrying a value taken from M' possible
values, the number of pieces of said additional group being such
that all the combinations of M' values taken N' by N' are produced
once and only once by the pieces of said additional group.
Description
The present invention relates to a puzzle which when complete forms
a three-dimensional figure from substantially planar members. The
present invention is a further development of the puzzle theory
presented in my French Pat. No. 1,582,023.
The present invention extends the theory set forth in that patent
to three-dimensional space enclosing figures. It will be
appreciated that such a development has the effect of increasing
the challenge of the game in that the number of possibilities which
must be considered in arranging the pieces is substantially
enhanced for a given number of pieces used.
According to said French Patent a given number of polygonal pieces
with N apices all having the same dimensional and polygonal shape
are provided and are arranged in side-by-side relation in
completing a given planar puzzle silhouette. Each such piece is
provided at each of its apices with any one of M values and in
completing the puzzle according to the rules, apices carrying the
same values are arranged juxtaposed to one another. In this respect
the puzzle resembles the conventional game of dominoes.
Further according to said French Patent at least one group I of
polygonal pieces with N polygonal pieces with N apices all having
the same dimensions and the same polygonal shape are provided in
which each apex of each pieces carries in a conventional manner a
value taken from M possible values arranged following a
predetermined convention order, the N values carried by the N
apices of the same piece forming a sequence to be read following a
predetermined conventional direction of reading and the number of
pieces considered being just sufficient for all the combination of
M values taken N by N to be produced once and only once by the
whole of the sequences carried by the pieces of said group
following said direction of reading and respecting the order of
said values.
An object of the present invention is a puzzle which employs the
same types of pieces as in the said French Patent in combination
with means for supporting the pieces in such a way as to form a
three-dimensional space-enclosing figure when complete.
An aspect of the present invention consists in a puzzle of the type
comprising at least one group of substantially planar multisided
pieces, each piece having N apices and substantially identical
dimensions and configuration, each apex of each piece carrying a
value taken from M possible values arranged in a predetermined
order, in combination with support means adapted to receive at
least some of the pieces in side-by-side relationship so that the
pieces form a space-enclosing three-dimensional figure when the
puzzle is completed.
Preferably, the number of pieces of said group are limited so that
all the combinations of M values taken N by N are produced once and
only once by the pieces of the group.
Preferably, the means for supporting the pieces is a regular
polyhedron support, for example, a regular tetrahedron, a cube, an
irregular polyhedron support such as truncated tetrahedron with a
reentrant portion, or other space-enclosing figure in which one or
more of the sides is not adapted to receive pieces.
Preferably, the pieces are temporarily secured to the support by
securing means such as by forming the pieces at least partially of
a magnetic material and the corresponding portions on the support
of a ferromagnetic material, or vice versa. In such case the pieces
may be easily reversible to provide mirror-image pieces.
According to one modification, two or more supports may be secured
together by any suitable means in order to provide a combined
support structure, for example, supporting a first regular
tetrahedron support on the face of a second regular tetrahedron
whose edges are three times those of the first regular
tetrahedron.
Various other features and characteristics of the invention will be
brought in the description of the embodiments which follows.
The invention will now be described with respect to the
accompanying drawings which show by way of example various
embodiments according to the invention, wherein:
FIG. 1 shows a perspective view of a regular tetrahedron support
with triangular faces with puzzle pieces superposed thereon;
FIG. 2 shows a perspective view of a cube support with puzzle
pieces superposed on its faces;
FIG. 3 shows a perspective view of a regular tetrahedron in which
each of its triangular faces is again divided into four triangular
portions.
FIG. 4A shows an equilateral triangular puzzle piece for use with
the support shown in FIG. 3;
FIG. 4B shows the reverse side of the puzzle piece shown in FIG.
4A;
FIG. 5 shows the tetrahedron support of FIG. 3 with pieces such as
shown in FIG. 4 superposed on particular portions thereof;
FIG. 6 shows a perspective view of a tetrahedron support with a
reentrant apex;
FIG. 7 is a sectional view taken along the line VII--VII in FIG. 6
with puzzle pieces superposed thereon;
FIG. 8A shows a perspective view of a tetrahedron support such as
shown in FIG. 3;
FIG. 8B shows a perspective view of a tetrahedron support such as
shown in FIG. 1;
FIG. 8C shows a perspective view of a combined support in which the
support shown in FIG. 8B is supported on one of the faces of the
support of FIG. 8A;
FIG. 9 shows a plan view of an alternative embodiment of a puzzle
piece in position in a portion of the support of FIG. 3;
FIG. 10 shows a perspective view of a cube support with the faces
thereof divided into four squares and a puzzle piece superposed on
one of the portions thereof;
FIG. 11 shows a section taken along the line XI--XI in FIG. 10
illustrating the piece being put into position;
FIG. 12 shows a perspective view of an alternative embodiment of
the support for use with square puzzle pieces; and
FIG. 13 shows a perspective view of a regular icosahedron support
with a piece superposed on one of its triangular sides.
For the sake of clarity, the following convention will be adopted:
the whole of the numerical values shown at the apices of a piece
will be represented by the sequence of the three indicia of its
three apices, starting with the smallest numerical value and
reading the other values in the counterclockwise direction (which
defines the order of these values and their reading direction). The
piece shown diagrammatically in FIG. 4A is thus (1,3,2).
The number and distribution of the values shown at the apices of
the pieces, and the number of these pieces, are established as
follows: the table is prepared of the various possible combinations
of numerical values which can be marked on the apices in order to
define only the required number of pieces, so that all the
combinations may be presented the same number of times, for example
once. The following table is given as an example:
---------------------------------------------------------------------------
000 (100) (200) (300) 001 (101 (201) (301 002 (102) (202) (302 003
(103 (203 (303) (010 (110) (210) (310) 011 111 (211) (311) 012 112
(212 (312) 013 113 (213) (313) (020) (120) (220) (320) (021)+ (121)
(221) (321) 022 122 222 (322) 023 123 223 (323) (030) (130) (230)
(330) (031)+ (131) (231) (331) (032)+)+ (132)+ (232) (332) 033 133
233 333
__________________________________________________________________________
In the above table there have been shown all the possible
combinations of four different values (M = 4 represented by "zero,"
"one" "two" and "three" and taken in combinations of three by
three. It is noted that any other indicia may be used, for example
four different colors, four different designs, letters.
By reading the above table from the top to the bottom for the first
left-hand column, and then for the second column, and so on, there
have been put in brackets the combinations already shown, taking
into account the reading order of the equilateral triangle. Thus,
the sequence (0,1,0) would correspond to a piece which already
exists under the sequential denomination (0,0,1) since by simply
rotating through 120.degree., the same triangular piece corresponds
to these two sequences. It will be derived from this table that
only 20 pieces will be required to have available pieces which are
all different by four values zero, one, two and three carried at
the apices; these 20 pieces constitute a group A of the puzzle
pieces.
The said table also shows the existence of four pieces in which the
three numerical values are also shown on another piece, but in a
different order, and such that no rotation provides an equivalent;
thus, the sequential distribution (0,2,1) groups together three
values already shown in the distribution (0,1,2), but the two
pieces cannot be superimposed. The same thing is true for any
triangle the apices of which carry three values different from each
other, namely in group A, the triangles (0,1,2), (0,1,3), (0,2,3)
and (1,2,3,). The 20 triangles of group A can then be completed by
four triangles corresponding respectively to the sequences (0,2,1),
(0,3,1), (0,3,2) and (1,3,2), these four additional pieces called
mirror-image pieces, constitute a group B according to the
invention; they are indicated in the said table by the + sign.
By way of example, FIG. 4A shows the piece (1,3,2) of group A and
FIG. 2B the piece (1,2,3 which is the mirror image of the preceding
piece and belongs to group B and is formed by simply turning over
the piece if it is reversible.
Of the 24 triangular pieces forming the pieces thus defined form a
combined group A-B in which the following features are noted.
There are four puzzle pieces called "triples" in that they each
carry the same value at each one of the apices.
Twelve puzzle pieces called "doubles" in that they have the same
value in two of their three apices; and
Eight pieces called "singles" in that all the three values at their
apices are different. These eight single pieces can be included in
two categories those of Group A and those of Group B which are the
so-called mirror-image or reverse sides in the case of reversible
pieces.
The playing of the game according to the invention briefly
explained in the preamble of the present application may
necessitate elaborate reasoning, more developed than those of the
conventional game of dominoes, and facilitated by the logic of
distribution of the present puzzle of the sequences of values
carried by the pieces.
FIG. 1 shows the most elementary puzzle support according to the
present application, i.e., a regular tetrahedron in which each of
the faces is adapted to be covered by a single puzzle piece formed
as an equilateral triangle, thus in total four pieces. The rules of
the game require that all juxtaposed apices must bear the same
value. Accordingly, at each corner of the tetrahedron the apices of
three pieces are juxtaposed and each of these apices must bear the
same value. A sample solution is indicated by the pieces 3, 3b, 3c
in FIG. 1, the fourth piece 3d is not shown, i.e. piece 3a has the
value sequence (0,2,3), piece 3b has the value sequence (1,3,2),
the piece 3c has the value sequence (0,3,1 and piece 3d has the
value sequence (0,3,1). There are, of course, other solutions.
Certain pieces however cannot be used if the puzzle is going to be
solved and completed. In particular, any of the triples, since all
the other pieces would have to be either triples of the same value,
but there exists only one triple of each value, or three identical
doubles but again there are no identical doubles in the group of
24. It is however possible for example to solve the puzzle using
two nonidentical doubles. It can also be logically deduced that the
solution of such a puzzle is also not possible with a single double
or three doubles; it is however, as seen above with regard to the
sample solution possible with four singles.
The puzzle of FIGS. 3-5 is developed into a more challenging
problem by the division of each of the faces of the tetrahedron
into four equilateral triangular portions thereby requiring a total
of 16 pieces to complete the puzzle. FIG. 3 shows a tetrahedron
support 20 in which the sides 22 and 24 which are visible in FIG. 3
are divided into equilateral triangles 22a-d and 24a-d
respectively. Each of these portions being adapted to receive and
support a single puzzle piece of substantially the same shape and
dimensions. Further, in the embodiment shown in FIG. 3 the entire
tetrahedron is formed of sheet stainless steel. In such a case
there need not be further differentiation between adjacent
portions, such as 22a and 22b. This is not the case with other
means for supporting the pieces as will be discussed infra.
FIG. 4A shows a puzzle piece suitable for use with the tetrahedron
support of FIGS. 3 in that it has the same dimensions as that of
the portions 22a-d and 24a-d. Further, the puzzle piece 23 is
formed as a plate of magnetized material, preferably, ferrite in a
rubber or plastics material binder. Similar plates in which all or
a part thereof is magnetized can be used, for example comprising
one or more magnets secured to a nonmagnetic puzzle piece.
The value indicia at the apices of the triangle are provided by
dots or apertures preferably extending through the piece 23. The
values may however be indicated in any desired manner by symbols,
colors, numbers, letters or the like capable of providing
distinguishable values at the apices. The piece 23 carries the
values (1,3,2) according to the convention for reading the values
set forth hereinabove.
FIG. 4b shows the reverse side 23' of the piece 23 shown in FIG.
4A. When the piece is turned to its reverse side 23' the value of
the piece is changed to (1,2,3) according to the convention for
reading the values. Further, the reverse side 23' is thus the
equivalent of a mirror-image piece. Accordingly, with the use of
reversible pieces, mirror-image pieces could be eliminated. Note
also in this regard that no extra pieces are effected by the
reversibility of the pieces since the reverse side of every piece
is either identical to the front side of a piece or its mirror
image. Also, the use of apertures for indicating the values is
particularly useful where the reversibility is desired.
FIG. 5 illustrates the placing of the pieces 23 on the various
portions of the faces 22 and 24 of the tetrahedron support 20 shown
in FIG. 3. A first piece 23' as shown in FIG. 4B is positioned on
portion 24c. A second piece 23b having the values (0,0,1) is
positioned on the portion 24d in such a way that its apex carrying
the value 1 is in position juxtaposed to the apex of the piece 23'
carrying the value 1. A third piece 23c having the values (0,2,1)
is then put into position on the portion 22c so that its apex
carrying the value 1 is juxtaposed to the apices of pieces 23' and
23b and so its apex carrying the value 2 is in position juxtaposed
to the value 2 of the piece 23'. It should be noted that the third
piece 23c might have been positioned in portion 22d in such a case
its value 0 would be juxtaposed to the value 0 of the piece 23b and
value 1 of the piece 23c would be juxtaposed to the apex carrying
the value 1.
FIG. 6 shows a modification of the tetrahedron support shown in
FIG. 3 in that a pyramidal portion defined by the triangular
portions 22d and 24d the portion 26d not shown in FIG. 3 is severed
from the rest of the tetrahedron 20 and inverted therein forming a
reentrant pyramidal portion of the same dimensions as the severed
pyramidal portion. This same process could be carried out with
respect to each of the apices of the tetrahedron 20 to form an
entirely inverted structure. It should be noted that there are no
substantial consequences in the solution of the puzzle with the
support of FIG. 6 over that of the support of FIG. 3.
A section view of the tetrahedron of FIG. 6 with a reentrant
portion is shown in FIG. 7. In this figure the structure of the
support 20 is clearly illustrated and includes an interior layer 21
formed of a sheet of cardboard, pasteboard or nonmagnetic plastics
material. A portions 28 of ferrite in a rubber of plastics material
binder is secured to the cardboard support preferably by glueing or
any other suitable mean. The puzzle pieces 23 for use with this
puzzle support 20 will be formed of a magnetic material such as
stainless steel. The inverse such as shown in FIGS. 1, 2, 3 and 5
is always possible in which case the pieces are formed of ferrite
in a binder and the support formed of stainless steel preferably
without the undersupport of cardboard as it will not be
necessary.
A further modification of the tetrahedron support is illustrated in
FIGS. 8A-C. FIG. 8A shows a tetrahedron support such as illustrated
in FIG. 3. FIG. 8B shows a tetrahedron support as illustrated in
FIG. 1. FIG. 8C shows a combined structure resulting from the
securing of the tetrahedron 1 on one of the faces of the
tetrahedron support 20. In this case the result of the puzzle is
different than that of the tetrahedron support shown either in
FIGS. 3-5 or 6 and 7 in that the combined puzzle support of FIG. 8
requires the use of 18 pieces and not 16 to cover its surfaces.
Accordingly the point 27 on the combined structure will be the
point at which the apices of seven rather than six triangles will
have to carry the same value. Other solid figures may also be
combined with the basic tetrahedron support structure to further
challenge the players. Note that the combining of the support
structure could be left to the player, the sole requirement being
that all the pieces required by such a combined structure must be
identical.
A further series of supports are possible by combining two
pyramidal structures of the same shape and dimensions. For example
two identical tetrahedrons of the type shown in FIG. 1 could be
combined to form a hexahedron with equilateral triangular faces.
Further, instead of the tetrahedron support of FIG. 1 a pyramid
with a square base and equilateral triangular side faces were
provided and connected to an identical pyramid along the square
bases an octahedron support could be formed in which each of the
eight faces adapted to receive a puzzle piece is formed as an
equilateral triangle.
FIG. 13 shows a icosahedron support 60 in which the 20 sides are
formed as equilateral triangles 62. An equilateral triangular piece
63 is placed in position on one of the sides 62 as shown in FIG.
13. The apices of the pieces are grouped in groups of five at each
of the apices 66 of the icosahedron 60. The solution of this puzzle
requires four triples, 12 doubles and four singles of which two are
of group A and two are of Group B or mirror-image pieces.
Such an embodiment in view of its many sides and corresponding
number of pieces required is suitable for playing with more than
one person. In such a case the players could be required to place
puzzle pieces on the support in consecutive order. In such a case
each player could be given the same number of puzzle pieces to be
held on a rack provided for this purpose to the conceal each
players pieces from these of his opponents. The object of such a
competitive puzzle could be for example the placement of one's
pieces on the support before one's opponent keeping in mind the
rules of the puzzle set forth hereinabove and respecting a certain
consecutive playing order.
In the case of more than one player, identical supports could be
provided for each player, and each player could pick pieces from a
given number of pieces equal to or greater than the total number of
pieces necessary for the puzzles of all of the players which may
involve one or more groups as discussed hereinabove. For example,
with two players each with a puzzle support such as shown in FIG.
1, each player could pick four pieces from the group of 24 pieces
attempting to complete the puzzle therewith before his opponent and
if a solution is not found with these pieces each player can
exchange a piece for one of the remaining pieces and so on.
FIG. 9 shows a further modification of the puzzle pieces. According
to this modification, a quadrilateral piece is provided which has
two opposed 90.degree. angles and opposed 60.degree. and
120.degree. angles. Each such piece is one-third of the equilateral
triangular piece 23 shown for example in FIG. 4A. Instead of the
equilateral triangular pieces used in all of the embodiments of
FIGS. 1 and 3-8, the quadrilateral pieces can be used. In such a
case three times as many pieces will be necessary to complete the
puzzle corresponding to any of the supports and many more
combinations will have to be computed to solve the puzzle. Again in
this embodiment, all the permutations and combinations can be
calculated by the values on the four corners of the piece in order
to deduce the group of 16 different pieces by their values.
In contrast to all the previous embodiments wherein the regular
tetrahedron has been the basic element of the puzzle support, FIG.
2 shows a cube support 10. Accordingly, the pieces 13 are square
and have a total of four indicia values corresponding to each
corner. The cube 10 requires six such pieces to complete the puzzle
and at each corner of the cube 10 meet the corners of three square
pieces 13. The pieces 13a-c are put in place on the support 10, the
values at each of the corners being the same. The cube 10 could be
secured to a base in which case there would be only five available
portions adapted to receive the pieces 13. Accordingly, the mental
calculations for solving the puzzle are interesting in that at the
upper corners the corresponding corners of three pieces will be
juxtaposed while at the lower corners, at which the puzzle support
engages the base, the corresponding corners of two pieces will be
juxtaposed.
FIG. 10 shows a cube 40 such as shown in FIG. 2 wherein each of the
square sides such as 42, 44, 46, of the cube is divided into four
portions 42a-d, 44a-d, 46a-e which are themselves square. The three
sides not seen in FIG. 10 are similarly divided into such portions
thereby forming 24 portions on the surface of the cube for
receiving corresponding square puzzle pieces 43, one of which being
shown in position on portion 42a. It is noted relative to this
puzzle support 40 the apices of three pieces 43 are juxtaposed at
each corner of the cube and the apices four pieces 23 are
juxtaposed at all the other points of juxtaposition.
FIG. 11 illustrates the putting into position of a piece 43 on the
portion 42a of the cube support 40. In all of the previous
embodiments the combination of magnetized pieces and magnetic
portions or vice versa has been employed as means for supporting
the pieces on the support. Other suitable means are of course
possible, for example, that which is shown in FIG. 11. A projection
45 is preferably provided at the center of each piece and is formed
or deformable plastics material and dimensioned to be e received in
the cooperating recess 45a in the portion 42a. The piece 43 is
secured simply by exerting a force in the direction indicated by
the arrow in FIG. 11. In order to aid the removal of the piece
means to grip the piece may be provided on the top of side surface
thereof. Other suitable means of securing the pieces to the
portions may also be provided.
FIG. 12 shows a three-dimensional space-enclosing support 50 formed
of cubic elements and adapted to receive square puzzle pieces 53 on
its square portions 52. The support 50 includes 25 portions 52. The
entire support 50 is mounted on a base 51 which thereby eliminates
from play all of the bottom faces of the lower row of cubic
elements. A single cubic element 55 is surmounted on the central
cubic element of the bottom row of elements. This cubic element 55
is analogous to the base supported modification of FIG. 2 discussed
hereinabove. In this puzzle support 50 there are certain points
such as at 56 at which three apices meet, other points such as 57
where two apices meet, other apices such as 58 where four apices
meet and finally other apices such as 59 where five apices meet.
Accordingly, the problems of permutations and combinations required
to solve this puzzle is relatively complicated. This support can be
easily modified at the will of the players by replacing the single
cubic element 56 by a different structure formed of square portions
52.
A further possible modification of this support 50 can be effected
by providing rectangular portions having nonequal sides such as for
example with the ratio 2 to 1. Pieces similar to the portions thus
modified would of course have to be provided.
Indeed there are many other possible varieties of supports which
have not been illustrated but which fall within the scope of the
invention. Particular attention is drawn to the possibility of
forming a structure which has no "positive" portions composed
entirely of so-called reentrant portions such as illustrated in
FIGS. 6 and 7 with regard to one of the apices of the tetrahedron,
this process could be employed at each of the apices thereof
effecting a structure formed solely of ribs forming reentrant
portions. This works particularly well with a 24 sided figure using
again equilateral triangular pieces and portions.
A ferromagnetic compound in the form of a paint could be used in
place of the magnetized material indicated hereinbefore. Such a
paint is suitable for covering a nonmagnetic surface of cardboard,
wood or plastics material to form either the pieces or the
support.
The puzzle according to the present invention has uses as a
teaching tool especially in the field of chemistry. In particular
it is noted that amino acids present in proteins are of 20 or 24 in
number associated with ribosomes in the form of regular
icosahedrons such as described with regard to the embodiment of
FIG. 13. Accordingly, such a puzzle could be used for demonstrative
purposes with regard to the above.
The present invention is not intended to be limited to the
embodiments and modifications shown and described herein but
includes all equivalents, and variations falling within the scope
of the appended claims.
* * * * *