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EP 0 945 155 B1 |
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EUROPEAN PATENT SPECIFICATION |
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Mention of the grant of the patent: |
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13.10.2004 Bulletin 2004/42 |
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Date of filing: 24.03.1999 |
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International Patent Classification (IPC)7: A63F 9/08 |
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Educational game device with sliding tiles to arrange in predetermined sequences
Lernspielvorrichtung mit verschiebbaren Ziegeln, die in bestimmten Folgen anzuordnen
sind
Jeu éducatif à carrés coulissants à arranger en séquences prédéterminées
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Designated Contracting States: |
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BE CH DE ES FR GB IT LI NL PT |
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Priority: |
27.03.1998 IT CN980003
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Date of publication of application: |
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29.09.1999 Bulletin 1999/39 |
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Proprietor: Lerda, Bruno |
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12020 Cuneo (IT) |
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Inventor: |
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- Lerda, Bruno
12020 Cuneo (IT)
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Representative: Apra', Mario |
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Apra' Brevetti
Via Bertola 2 10121 Torino 10121 Torino (IT) |
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References cited: :
DE-C- 847 276 US-A- 4 480 839
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US-A- 4 097 049
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Note: Within nine months from the publication of the mention of the grant of the European
patent, any person may give notice to the European Patent Office of opposition to
the European patent
granted. Notice of opposition shall be filed in a written reasoned statement. It shall
not be deemed to
have been filed until the opposition fee has been paid. (Art. 99(1) European Patent
Convention).
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[0001] The present invention relates to an educational game device with sliding tiles to
arrange in predetermined sequences.
[0002] Game devices of the type specified are known in the prior art, for instance from
US-A-4097049 which shows a game device with all the features set out in the preamble
of claim 1.
[0003] However, known game devices have the drawback of requiring a fairly anodyne intellectual
effort which is therefore often unsatisfying. Furthermore, being of simplified structure,
they do not permit of graduation of the level of difficulty.
[0004] Furthermore, such known game devices are not suitable for visually handicapped or
illiterate players.
[0005] The object of the present invention is to provide an educational game device with
sliding tiles to arrange in predetermined sequences, that is designed to stimulate
and develop, in the form of an "intelligent game" the user's perceptive insight, logic
and sense of geometry, by exchanging the positions of sliding tiles.
[0006] Another object is to provide a game device as specified, that will allow the level
of difficulty of the game to be graduated to suit the ability of the player.
[0007] A further object is to provide a game device as indicated, that is also suitable
for visually disabled or illiterate players.
[0008] With a view to these objects, the present invention provides an educational game
device with sliding tiles to arrange in predetermined sequences, whose essential features
form the subject of the characterizing part of Claim 1.
[0009] Other advantageous features appear in the dependent claims.
[0010] The aforesaid claims are to be understood as reproduced here in their entirety.
[0011] The invention is described in detail below with reference to the accompanying drawings,
which are provided purely by way of example, in which:
- Fig. 1 is a plan view of the game device according to the invention in the initial
condition of the game;
- Fig. 2 is a view similar to that of Fig. 1 but illustrating the final condition of
the game;
- Fig. 3 is a plan view of a support or board for the game device according to Figures
1, 2;
- Fig. 4 is a sectional view on the plane marked IV-IV in Fig. 3;
- Fig. 5 is a view similar to that of Fig. 1, but in which the game device is provided
with moveable peg means which increase the difficulty of the game;
- Fig. 6 is a side view in the direction of the arrow marked VI in Fig. 5;
- Figures 7 and 8 are partial views in section through the game device according to
Fig. 5, illustrating two different positions of play of a moveable peg;
- Fig. 9 is a view in partial cross section through the device of Fig. 5, illustrating
two sliding game tiles and their respective slideways in the support or board; and
- Fig. 10 is a view in partial cross section through the device of Fig. 5, illustrating
a sliding game block and a slideway for it in the support or board.
[0012] In the drawings, 10 (Figs. 1, 2) denotes the whole of the educational game device
according to the present invention.
[0013] The said device 10 comprises a quadrilateral support or board 11 (Figs. 3, 4) made
of e.g. plastic, on one of whose faces are two mutually adjacent and communicating
recessed tracks with rectangular perimeters, namely a principal track 12 and an auxiliary
track 13.
[0014] The track 12, of greater area, comprises a network of longitudinal 12.1 and transverse
12.2 straight perpendicular intersecting slideways (slots) (Fig. 3). In the example
illustrated, the track 12 comprises four longitudinal ways 12.1 and six transverse
ways 12.2.
[0015] The auxiliary track 13 of smaller area, on the other hand, comprises a single straight
slideway 13.1 that is parallel to the said longitudinal ways 12.1 and lies between
two transverse ways 12.2, with which this way 13.1 communicates at its ends. In the
example illustrated, the way 13.1 communicates with the second and penultimate of
the six transverse ways 12.2.
[0016] Guided in the said network of ways 12.1, 12.2 are twenty-four quadrilateral sliding
game tiles 14, made of e.g. plastic, which occupy the entire area of the track 12,
being arranged when at rest in four rows and in six columns. In this arrangement,
each tile 14 is at its own intersection between a longitudinal way 12.1 and a transverse
way 12.2.
[0017] In particular, each tile 14 includes a foot with a frustoconical end 14.1 (Fig. 9)
engaged with play in a corresponding slideway, 12.1, 12.2, and a flat head 14.2 (of
square base in accordance with the example illustrated) which is juxtaposed with play
against the head 14.2 of another tile or against an edge of the track 12.
[0018] An opening 13.2 (Fig. 3) in the way 13.1 allows insertion of the foot 14.1 of each
tile, which is then slid, beyond the way 13.1, around the network of ways 12.1, 12.2.
[0019] A block 15 (Figs. 1, 2) is then inserted, once again through the opening 13.2, into
the slideway 13.1 via its foot part 15.1 with the frustoconical end (Fig. 10). The
said block 15, which may be made e.g. of plastic, comprises a flat head 15.2 (of rectangular
base in accordance with the example illustrated), that occupies part of the track
13, but leaves in this track an unoccupied space 15.3 of variable position and corresponding
approximately to the dimensions of the head 14.2 of one tile 14.
[0020] By means of this arrangement, the block 15 is able to slide along the track 13 in
the longitudinal direction only, between two extreme positions, one against the right-hand
end of the track, in which the unoccupied space 15.3 is on its left (Fig. 2) and the
other against the left-hand end of the same track, in which the unoccupied space 15.3
is on its right (Fig. 1). In each of the said two positions to which the block 15
can be slid, one tile 14 of the row of tiles adjacent to the track 13 (specifically
the tile belonging to the second column or to the fifth column) is next to the unoccupied
space 15.3, which this tile can occupy by sliding in a direction perpendicular to
that of the block 15. This opens up an unoccupied space between the tiles 14 which,
by making moves in perpendicular directions, can be rearranged relative to each other
within the track 12.
[0021] As illustrated in Fig. 1, the basic face visible from the outside of the head 14.2
of each tile 14 is coloured, so that at the beginning of the game the said tiles form,
for example, in the corners of the track 12, a geometrical arrangement of four identical
right-angled triangles having mirror symmetry and having the same colour, and in the
centre of the track a rhombus whose sides coincide with the hypotenuses of the four
right-angled triangles.
[0022] The object of the game is, according to the example illustrated, by moving the tiles
14 and the block 15, to exchange the colour of the rhombus with that of the right-angled
triangles inscribed within said track 12, so as to obtain the game configuration illustrated
in Fig. 2.
[0023] It will be observed that the dissimilar chromatic configuration of the visible face
of the heads 14.2 of the tiles 14 enables the device to be used by illiterate persons
also.
[0024] In addition, in order to render the device 10 useable by the visually disabled also,
the visible basic face of the head 14.2 of each tile 14 may include knurling, depressions
or reliefs, either instead of or in addition to the chromatic configuration.
[0025] In the bottom wall of the support 11 are four holes 16.1 and one hole 16.2. The axes
of the holes 16.1 are each aligned with the vertices of the perimeter of the track
12, while the axis of the hole 16.2 is aligned with the intersection of the diagonals
of the perimeter of this said track.
[0026] Each hole 16.1, 16.2 houses a respective moveable peg 17.1, 17.2 (Fig. 6) that can
be placed in two different positions with respect to the support 11, one being a working
position (Fig. 7) and the other a rest position (Fig. 8), corresponding to the peg
being pushed in or pulled out manually, respectively.
[0027] Eight modified tiles denoted 14' have in their head 14.2' a cutout 14.3 of essentially
cylindrical surface.
[0028] In its rest position, each peg 17.1, 17.2 does not emerge into the track 12 and therefore
does not interfere with the movement of the tiles 14.
[0029] However, in their working position the pegs 17.1 emerge into their respective corners
of the track 12, preventing the head 14.2 of an ordinary tile 14 from occupying a
position corresponding to these corners. The corner positions can instead be occupied
only by four modified tiles 14' correctly oriented in such a way that the head of
each with the cutout 14.3 is juxtaposed correctly against a respective peg 17.1.
[0030] Similarly the peg 17.2 in its working position emerges in the centre of the track
12, preventing four ordinary tiles 14 from occupying the central position of the track.
The centre of the said track 12 can instead be occupied only by four modified tiles
14', correctly oriented in such a way that their heads with the cutouts 14.3 are juxtaposed
correctly around the said peg 17.2.
[0031] The working position of play of the pegs 17.1 raises the difficulty of the game (difficulty
level 2) compared with their rest condition (difficulty level 1). The difficulty of
the game is even greater (difficulty level 3) if the central peg 17.2 is in the working
position, while the pegs 17.1 are in the rest position.
[0032] It goes without saying that the four pegs 17.1 or the peg 17.2 can be made fixed.
In this case the difficulty level of the game device cannot be modified.
[0033] To ensure the correct play position of the pegs 17.1, 17.2, the latter have a head
which, in the working position, is juxtaposed against the board 11, while a spring
ring 17.4 is mounted on the body of the peg, thus increasing the friction against
the wall of the corresponding housing hole.
1. Educational game device with sliding tiles to arrange in predetermined sequences,
comprising a support or board (11) , and, in the said support (11), two mutually adjacent
and communicating tracks (12, 13), a principal track (12) having greater area and
an auxiliary track (13) of smaller area, and wherein at the beginning and end of the
game the principal track (12) is completely occupied by a plurality of tiles (14)
positioned side by side in an arrangement of rows and columns, each tile (14) being
able to slide in perpendicular directions, characterized in that the auxiliary track (13) is occupied only partly by a block (15) that is able to
slide in only one direction parallel to one direction of sliding of the said tiles
(14) between two positions of play, in each of which the said block (15) leaves in
the said auxiliary track (13) an unoccupied space (15.3) of variable position and
of dimensions approximately corresponding to the dimensions of one tile (14), so that
in each of the said two positions of play of the block (15) a respective tile (14)
in the row of tiles adjacent to the auxiliary track (13) is next to the said unoccupied
space (15.3), which this tile can be made to occupy by sliding it in a direction perpendicular
to that of the said block (15), thereby opening up in the principal track (12) a corresponding
unoccupied space between the tiles (14), which - during the game - can be rearranged
relative to each other in the principal track (12) by movements in perpendicular directions.
2. Game device according to Claim 1, characterized in that the said principal track (12) comprises a network of longitudinal (12.1) and transverse
(12.2) straight perpendicular intersecting slideways, while the said auxiliary track
(13) comprises a single straight slideway (13.1) that is parallel to the said longitudinal
ways (12.1) and lies between two transverse ways (12.2), with which this way (13.1)
communicates at its ends.
3. Game device according to Claim 2, characterized in that at the beginning and end of the game each tile (14) is arranged in the principal
track (12) at its own intersection between a longitudinal way (12.1) and a transverse
way (12.2).
4. Game device according to Claim 1, characterized in that the said principal track (12) is basically quadrilateral and the said tiles (14)
have one face visible from the outside that is at least partly coloured, so that at
the beginning of the game the said adjacent tiles form, in the corners of the track
(12), a geometrical arrangement of four identical right-angled triangles having mirror
symmetry and having the same colour, and in the centre of the track a rhombus whose
sides coincide with the hypotenuses of the four right-angled triangles (Fig. 1), while
the object of the game is, by moving the said tiles (14) and the said block (15),
to exchange the colour of the rhombus with that of the right-angled triangles inscribed
within said track (12) (Fig. 2).
5. Game device according to Claim 1 or 4, characterized in that the said tiles (14) each comprise an external face having a surface that is at least
partly irregular, for example knurled or provided with depressions and/or reliefs,
so that the game device can also be used by the visually disabled.
6. Game device according to one or more of the preceding claims, characterized in that it comprises at least one peg (17.1, 17.2) that prevents any of the said tiles (14)
from correctly occupying the position corresponding to it in the said track (12),
and in that it comprises at least one modified tile (14') (cutout 14.3) so that it can be placed
against said peg and correctly occupy the position corresponding to that peg in the
principal track (12).
7. Game device according to Claim 6, characterized in that it comprises at least one moveable peg (17.1, 17.2) that can be moved between two
different positions with respect to the said principal track (12), a rest position
and a working position, in which working position it prevents any of the said tiles
(14) from correctly occupying the position corresponding to the said peg in the said
track (12), and in that it comprises at least one modified tile (14') (cutout 14.3) so that it can be placed
against said peg and correctly occupy the position corresponding to that peg in the
principal track (12).
8. Game device according to Claim 7, in which the said principal track (12) is basically
quadrilateral, characterized in that it comprises five moveable pegs (17.1, 17.2) arranged respectively in the four corners
and in the centre of the said principal track (12), and eight modified tiles (14'),
so that the difficulty of the game can be increased, from the rest situation of the
said pegs (difficulty level 1), by bringing into the working position the pegs (17.1)
that are in the corners of the said track (12) (difficulty level 2), or still further
increased by placing the central peg (17.2) in the working position (difficulty level
3), while the pegs (17.1) that are in the corners of the said principal track (12)
are at rest.
1. Lernspielvorrichtung zum Anordnen verschiebbarer Platten in bestimmten Reihenfolgen
mit einem Träger oder Brett (11) und in dem Träger (11) zwei gegenseitig benachbarten
und miteinander verbundenen Spuren (12, 13), einer Hauptspur (12) mit einer größeren
Fläche und einer Nebenspur (13) mit einer kleineren Fläche, und wobei zu Beginn und
am Ende des Spiels die Hauptspur (12) von mehreren Platten (14) vollständig besetzt
ist, die Seite an Seite in einer Reihen- und Spaltenanordnung angeordnet sind, wobei
jede Platte (14) in senkrechten Richtungen verschiebbar ist,
dadurch gekennzeichnet, dass
die Nebenspur (13) nur teilweise von einem Block (15) besetzt ist, der nur in einer
Richtung parallel zu einer Verschieberichtung der Platten (14) zwischen zwei Spielstellungen
verschiebbar ist, wobei der Block (15) in jeder davon in der Nebenspur (13) einen
unbesetzten Raum (15.3) in einer veränderbaren Stellung und mit Abmessungen etwa entsprechend
den Abmessungen einer Platte (14) zurücklässt, so dass in jeder der beiden Spielstellungen
des Blocks (15) eine entsprechende Platte (14) in der Plattenreihe neben der Nebenspur
(13) neben dem unbesetzten Raum (15.3) liegt, der durch diese Platte durch ihr Verschieben
in einer Richtung senkrecht zu der des Blocks (15) besetzt werden kann, wodurch in
der Hauptspur (12) ein entsprechender unbesetzter Raum zwischen den Platten (14) geöffnet
wird, der - während des Spiels - durch Bewegungen in senkrechten Richtungen in der
Hauptspur (12) zueinander neu angeordnet werden kann.
2. Spielvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Hauptspur (12) ein Netz aus länglichen (12.1) und querlaufenden (12.2), geraden,
senkrecht sich schneidenden Verschiebewegen umfasst, während die Nebenspur (13) einen
einzigen geraden Verschiebeweg (13.1) umfasst, der parallel zu den Längswegen (12.1)
verläuft und zwischen zwei Querwegen (12.2) liegt, mit dem dieser Weg (13.1) an seinen
Enden in Verbindung steht.
3. Spielvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass zu Beginn und am Ende des Spiels jede Platte (14) in der Hauptspur (12) an ihrem
eigenen Schnittpunkt zwischen einem Längs- (12.1) und einem Querweg (12.2) angeordnet
ist.
4. Spielvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Hauptspur (12) grundsätzlich vierseitig ist und die Platten (14) eine von außen
sichtbare Fläche haben, die mindestens teilweise farbig ist, so dass die benachbarten
Platten zu Beginn des Spiels in den Ecken der Spur (12) eine geometrische Anordnung
aus vier identischen rechtwinkligen Dreiecken mit gespiegelter Symmetrie und derselben
Farbe und in der Mitte der Spur einen Rhombus bilden, dessen Seiten mit den Hypotenusen
der vier rechtwinkligen Dreiecke (Fig. 1) deckungsgleich sind, während das Ziel des
Spieles darin besteht, durch Bewegen der Platten (14) und des Blocks (15) die Farbe
des Rhombus mit der der rechtwinkligen Dreiecke zu tauschen, die innerhalb der Spur
(12) (Fig. 2) gebildet werden.
5. Spielvorrichtung nach Anspruch 1 oder 4, dadurch gekennzeichnet, dass die Platten (14) jeweils eine Außenseite umfassen, die mit einer Oberfläche ausgestattet
ist, die mindestens teilweise unregelmäßig, zum Beispiel gerändelt, oder mit Vertiefungen
und/oder Senken versehen ist, so dass die Spielvorrichtung auch von sehbehinderten
Menschen benutzt werden kann.
6. Spielvorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie mindestens einen Stöpsel (17.1, 17.2) umfasst, der verhindert, dass eine der
Platten (14) die ihr entsprechende Stellung in der Spur (12) vollständig besetzt,
und dass sie mindestens eine veränderte Platte (14') (Ausschnitt 14.3) umfasst, so
dass sie gegen den Stöpsel angeordnet werden kann und die diesem Stöpsel entsprechende
Stellung in der Hauptspur (12) vollständig besetzen kann.
7. Spielvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass sie mindestens einen beweglichen Stöpsel (17.1, 17.2) umfasst, der zwischen zwei
unterschiedlichen Stellungen gegenüber der Hauptspur (12), einer Ruhestellung und
einer Arbeitsstellung, bewegt werden kann, wobei sie in der Arbeitsstellung verhindert,
dass eine der Platten (14) die Stellung entsprechend dem Stöpsel in der Spur (12)
vollständig besetzen kann, und dass sie mindestens eine veränderte Platte (14') (Ausschnitt
14.3) umfasst, so dass sie gegen den Stöpsel angeordnet werden kann und die dem Stöpsel
entsprechende Stellung in der Hauptspur (12) vollständig besetzen kann.
8. Spielvorrichtung nach Anspruch 7, in dem die Hauptspur (12) grundsätzlich vierseitig
ist, dadurch gekennzeichnet, dass sie fünf bewegliche Stöpsel (17.1, 17.2), die jeweils in den vier Ecken und in dem
Zentrum der Hauptspur (12) angeordnet sind, und acht veränderte Platten (14') umfasst,
so dass die Schwierigkeitsstufe des Spiels erhöht werden kann, nämlich aus der Ruhestellung
der Stöpsel (Schwierigkeitsgrad 1), indem die Stöpsel (17.1), die sich in den Ecken
der Spur (12) befinden (Schwierigkeitsgrad 2), in die Arbeitsstellung gebracht werden,
oder noch weiter erhöht werden kann, indem der mittige Stöpsel (17.2) in die Arbeitsstellung
(Schwierigkeitsgrad 3) gebracht wird, während die Stöpsel (17.1), die sich in den
Ecken der Hauptspur (12) befinden, im Ruhezustand sind.
1. Dispositif de jeu éducatif avec des carrés coulissants pour être disposés en séquences
prédéterminées, comprenant un support ou carte (11) et dans ledit support (11) deux
pistes communicantes et mutuellement adjacentes (12, 13), une piste principale (12)
ayant une surface plus grande et une piste auxiliaire (13) ayant une surface plus
petite et dans lequel au début et à la fin du jeu, la piste principale (12) est complètement
occupée par une pluralité de carrés (14) positionnés côte à côte dans une disposition
en rangée et en colonne, chaque carré (14) pouvant glisser dans des directions perpendiculaires,
caractérisé en ce que la piste auxiliaire (13) est partiellement occupée seulement par un bloc (15) qui
est capable de coulisser seulement dans une direction parallèle à une direction de
coulissement desdits carrés (14) entre deux positions de jeu, dans chacune desquelles
ledit bloc (15) quitte dans ladite piste auxiliaire (13) un espace inoccupé (15.3)
de position variable et de dimension correspondant approximativement aux dimensions
d'un carré (14) de sorte que dans chacune desdites deux positions de jeu du bloc (15)
un carré respectif (14) dans la rangée de carrés adjacente à la piste auxiliaire (13)
est le prochain dans ledit espace inoccupé (15.3), carré qui peut être amené à occuper
en coulissant le carré dans une direction perpendiculaire à celle dudit bloc (15),
ouvrant ainsi dans la piste principale (12) un espace inoccupé correspondant entre
les carrés (14), qui peuvent être redisposés les uns aux autres pendant le jeu dans
la piste principale (12) par des déplacements dans des directions perpendiculaires.
2. Dispositif de jeu selon la revendication 1, caractérisé en ce que ladite piste principale (12) comprend un réseau de glissières interconnectées perpendiculaires
droites transversales (12.2) et longitudinales (12.1) tandis que la piste auxiliaire
(13) comprend une seule glissière droite (13.1) qui est parallèle auxdites glissières
longitudinales (12.1) et qui se trouve entre deux glissières transversales (12.2)
avec lesquels cette glissière (13.1) communique à ses extrémités.
3. Dispositif de jeu selon la revendication 2, caractérisé en ce qu'au début et à la fin du jeu, chaque carré (14) est disposé dans la piste principale
(12) à sa propre intersection entre une glissière longitudinale (12.1) et une glissière
transversale (12.2).
4. Dispositif de jeu selon la revendication 1, caractérisé en ce que ladite piste principale (12) est basiquement quadrilatère et lesdits carrés (14)
ont une face visible de l'extérieur qui est au moins partiellement colorée de sorte
qu'au début du jeu, lesdits carrés adjacents forment dans les coins de la piste (12)
une structure géométrique de quatre triangles rectangles identiques ayant une symétrie
inversée et ayant la même couleur et au centre de la piste, un rhombus dont les côtés
coïncident avec les hypoténuses des quatre triangles rectangles (Figure 1) tandis
que l'objet du jeu est par déplacement desdits carrés (14) et dudit bloc (15) d'échanger
la couleur du rhombus avec celle des triangles rectangles inscrits à l'intérieur de
ladite piste (12) (figure 2).
5. Dispositif de jeu selon la revendication 1 ou 4, caractérisé en ce que lesdits carrés (14) comprennent chacun une face externe ayant une surface qui est
au moins partiellement irrégulière, par exemple moletée ou munie de dépressions et/ou
de reliefs de sorte que le dispositif de jeu puissent être également utilisé par des
malvoyants.
6. Dispositif de jeu selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend au moins un tenon (17.1, 17.2) qui empêche chaque carré (14) de se positionner
correctement dans la position qui leur correspond dans ladite piste (12) et en ce qu'il comprend au moins un carré modifié (14') (détouré 14.3) de sorte q'il peut être
placé contre ledit tenon et occuper correctement la position correspondant à ce tenon
dans la piste principale (12).
7. Dispositif de jeu selon la revendication 6, caractérisé en ce qu'il comprend au moins un tenon mobile (17.1, 17.2) qui peut être déplacé entre deux
positions différentes par rapport à ladite piste principale (12), à savoir une position
de repos et une position de travail, position de travail dans laquelle il empêche
chaque dit pavé (14) d'occuper correctement la position correspondant audit tenon
dans ladite piste (12) et en ce qu'il comprend au moins un carré modifié (14') (détouré 14.3) de sorte q'il peut être
placé contre ledit tenon et occuper correctement la position correspondant au tenon
dans la piste principale (12).
8. Dispositif de jeu selon la revendication 7, dans lequel ladite piste principale (12)
est basiquement quadrilatère caractérisé en ce qu'il comprend 5 tenons mobiles (17.1, 17.2) disposés respectivement dans les quatre
coins et au centre de ladite piste principale (12) et huit carrés modifiés (14')de
sorte que la difficulté du jeu peut être augmentée, de la situation de repos desdits
tenons (niveau de difficulté 1) en amenant en position de travail les tenons (17.1)
qui sont dans les coins de ladite piste (12) (niveau de difficulté 2) en plaçant le
tenon central (17.2) dans la position de travail (niveau de difficulté 3) tandis que
les tenons (17.1) qui sont dans les coins de ladite piste principale (12) sont au
repos.