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The '''ram''' is a technique used in [[Chip's Challenge]] to stop [[block]]s from sliding on [[ice]] or [[force floor]]s. Rams are usable whenever a block is attempting to slide, whether it is moving or not.
The '''ram''' is a technique used in the [[MS ruleset]] (and, to a lesser extent, the [[Steam ruleset]]) of [[Chip's Challenge]] to stop [[block]]s from sliding on [[sliding tile]]s. Rams are usable whenever a block is attempting to slide, whether it is moving or not.


== Moving ram ==
== MS ==


When a block is sliding and is pushed against ''any'' block-[[acting wall]], it will immediately stop moving and stay there, as if the block had started over this square. Chip can even push the block in the opposite direction of the force floor, which would have been impossible before. This example shows a level where the ram has to be used skillfully to solve:
In MS, when a sliding block is pushed perpendicularly and the block either is in a closed [[trap]] or is being pushed against a block-[[acting wall]], it will be removed from the [[sliplist]] and stay put, as if the block had started on this square. [[Chip]] can then push the block in any open direction. This example shows a level where a ram has to be used to solve:


[[File:Ramarchy.png]]
[[File:Ram.png]]


The last block in this level has to be pushed onto the force floor before the ram can be used. If the [[toggle wall]] is opened and the block loaded onto the force floor, Chip is squashed. The first and second of the five permitted passages above must be used to open the [[blue lock]], and then the first stage of the block movement is to move the block onto the toggle wall, switch them again and [[flick]] it onto the force floor. The third and fourth passages are used to ram the block, which is then moved L. The fifth and final passage is onto the force floor when the toggle walls are open/closed, such that Chip can then voluntarily move L, explode the [[bomb]] and reach the exit. Note that the [[thin wall]] west under the [[yellow lock]] forces Chip to use it as the second or fourth passage, as stepping L into it will cause Chip to be blocked.
In order to reach the exit Chip must push the first block right, onto the line of force floors. If Chip then continues to the end of the level and pushes the second block without ramming the first, he will die:


== Stationary ram ==
[[File:Ram Anim Die.gif]]


When a block is sliding on force floors - or rarely ice when reversing is illegal - and the directed move is blocked, the ram will remove it from the [[sliplist]] such that it does not slide when the obstacle is removed, which would normally result in Chip being hit. In some situations, a [[spring step]] will also work, depending on whether [[slide delay]] stops the block from moving during the turn Chip is in its range.
However if Chip before pushing the second block, pushes the first block upwards, it will ram the block against the wall and stop it from sliding. Doing this will allow Chip to safely complete the level:


== Mouse Panel Glitch ==
[[File:Ram Anim Win.gif]]


The [[Mouse Panel Glitch]] will successfully perform a ram, but generally only a stationary ram will work, as mouse use lacks the precise timing of the arrow keys that would be required for the first type of ram. In addition, the telltale sound of Chip hitting a wall is absent whenever this glitch is used, which would make a mouse-assisted ram impossible to read in a TWS.
=== Parallel Ram ===
A parallel ram can be performed in only one situation: while Chip is teleporting. A failed teleport that ends up pushing a sliding block parallel to its sliding direction into a solid object. Such a situation can be seen here:


== Applications and ''After the Rainstorm'' ==
[[File:Ram Tele Anim.gif]]
 
Chip pushes the first block into the teleport so that it is sliding against the second block. Chip then tries to teleport, in the process he bumps against and pushes the now sliding block into the second block (this action is not drawn to the screen as all teleport attempts happen in under a frame), which rams it and causes it to stop sliding allowing Chip to safely push the second block and exit the level.
 
=== Mouse Panel Glitch ===
 
The [[Mouse Panel Glitch]] will successfully perform a ram, but is generally harder to pull off, as mouse use lacks the precise timing of the arrow keys that would be required if the block is not sliding into obstacles. In addition, the telltale sound of Chip hitting a wall is absent whenever this glitch is used, which would make a mouse-assisted ram impossible to read in a TWS.
 
=== Applications and ''After the Rainstorm'' ===


Rams, along with being stratagems and safeguards, can often be used as a trade of time for safety, in such areas as [[Block Buster]]. An extremely famous ram, by contrast, is the one required to solve [[After the Rainstorm]]:
Rams, along with being stratagems and safeguards, can often be used as a trade of time for safety, in such areas as [[Block Buster]]. An extremely famous ram, by contrast, is the one required to solve [[After the Rainstorm]]:
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[[File:Ram A.png]]
[[File:Ram A.png]]


When they find this area of the level, many players will walk (UR) DRURU and be flattened every time by block 2. Chip needs two blocks in order to continue the level, so moving (DR) URDRU instead will not work as it only picks up one block. Moving -U first, a stationary ram, will stop block 2 from sliding when block 1 is moved.
When they find this area of the level, many players will walk (UR) DRURU and be flattened every time by block 2. Chip needs two blocks in order to continue the level, so moving (DR) URDRU instead will not work as it only picks up one block. Moving -U first will stop block 2 from sliding when block 1 is moved.
 
The difficulty in applying this is finding it in an [[AVI]]; these do not record sound. A [[TWS]] does record sound, but in return the mouse is not recorded, such that using a mouse-assisted ram would make the solution impossible to read. Another problem which occurs in After the Rainstorm is that Chip is already moving U, such that the -U move is not as obvious to a watcher as if the previous move was something else, as Chip would physically turn. These combined factors lead to puzzlement on this level in many cases, equivalent to the public puzzlement on [[Two Sets of Rules]] and the [[cross-checking]] required to solve this in MS.
 
== Steam ==


The difficulty in applying this is finding it in an [[AVI]]; these do not record sound. A [[TWS]] does record sound, but in return the mouse is not recorded, such that using a mouse-assisted ram would make the solution impossible to read. Another problem which occurs in After the Rainstorm is that Chip is already moving U, such that the -U move is not as obvious to a watcher as if the previous move was something else, as Chip would physically turn. These combined factors lead to puzzlement on this level in many cases, equivalent to the public puzzlement on [[Two Sets of Rules]] and the [[cross-checking]] required to solve this in [[Ruleset|MS]].
Ramming in Steam is limited to ice corners. If a block is pushed while sliding on an ice corner, it becomes stuck sliding into the 2 sides that the corner is on, and can only be removed with a [[hook]], [[bowling ball]], or [[time bomb]]. The push can happen at any point while the block is sliding into or on the tile, and does not have to wait for the block to be fully on the tile.


== See also ==
== See also ==

Latest revision as of 02:14, 1 June 2021

The ram is a technique used in the MS ruleset (and, to a lesser extent, the Steam ruleset) of Chip's Challenge to stop blocks from sliding on sliding tiles. Rams are usable whenever a block is attempting to slide, whether it is moving or not.

MS[edit]

In MS, when a sliding block is pushed perpendicularly and the block either is in a closed trap or is being pushed against a block-acting wall, it will be removed from the sliplist and stay put, as if the block had started on this square. Chip can then push the block in any open direction. This example shows a level where a ram has to be used to solve:

Ram.png

In order to reach the exit Chip must push the first block right, onto the line of force floors. If Chip then continues to the end of the level and pushes the second block without ramming the first, he will die:

Ram Anim Die.gif

However if Chip before pushing the second block, pushes the first block upwards, it will ram the block against the wall and stop it from sliding. Doing this will allow Chip to safely complete the level:

Ram Anim Win.gif

Parallel Ram[edit]

A parallel ram can be performed in only one situation: while Chip is teleporting. A failed teleport that ends up pushing a sliding block parallel to its sliding direction into a solid object. Such a situation can be seen here:

Ram Tele Anim.gif

Chip pushes the first block into the teleport so that it is sliding against the second block. Chip then tries to teleport, in the process he bumps against and pushes the now sliding block into the second block (this action is not drawn to the screen as all teleport attempts happen in under a frame), which rams it and causes it to stop sliding allowing Chip to safely push the second block and exit the level.

Mouse Panel Glitch[edit]

The Mouse Panel Glitch will successfully perform a ram, but is generally harder to pull off, as mouse use lacks the precise timing of the arrow keys that would be required if the block is not sliding into obstacles. In addition, the telltale sound of Chip hitting a wall is absent whenever this glitch is used, which would make a mouse-assisted ram impossible to read in a TWS.

Applications and After the Rainstorm[edit]

Rams, along with being stratagems and safeguards, can often be used as a trade of time for safety, in such areas as Block Buster. An extremely famous ram, by contrast, is the one required to solve After the Rainstorm:

Ram A.png

When they find this area of the level, many players will walk (UR) DRURU and be flattened every time by block 2. Chip needs two blocks in order to continue the level, so moving (DR) URDRU instead will not work as it only picks up one block. Moving -U first will stop block 2 from sliding when block 1 is moved.

The difficulty in applying this is finding it in an AVI; these do not record sound. A TWS does record sound, but in return the mouse is not recorded, such that using a mouse-assisted ram would make the solution impossible to read. Another problem which occurs in After the Rainstorm is that Chip is already moving U, such that the -U move is not as obvious to a watcher as if the previous move was something else, as Chip would physically turn. These combined factors lead to puzzlement on this level in many cases, equivalent to the public puzzlement on Two Sets of Rules and the cross-checking required to solve this in MS.

Steam[edit]

Ramming in Steam is limited to ice corners. If a block is pushed while sliding on an ice corner, it becomes stuck sliding into the 2 sides that the corner is on, and can only be removed with a hook, bowling ball, or time bomb. The push can happen at any point while the block is sliding into or on the tile, and does not have to wait for the block to be fully on the tile.

See also[edit]

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