STRATIC
V 0.5 -- Created 2020/4/20 -- Updated 2022/1/3 ______________________________________________________________________________________
:: About ::
Stratic is a boardgame designed to stop AI from outperforming humans. There are no preset starting formations, the number of pieces on the board increases as well as decreases, and the board continually grows in size. These features stack to make it impossible to calculate board end-states in finite time. We have also included a very simple resource management function so Stratic officially qualifies as a tactics-level wargame. Additionally, Stratic is 3-dimensional, despite looking like a flat 2D board, which is trivial for humans to track but is another layer of complexity for AI.
We need help testing Stratic, so if anyone wants to help try it out, @ me. We have a public gdoc we play on but if you join the Discord we have a bot for it and soon we will have a web-end as well (this page you are on now will become a portal for playing the game) so you will be able to play it online like most other games.
To clarify how this combats AI engines: the games get exponentially more complex as time progresses since the boards grow out in every direction and the number of pieces increases, making calculating probabilities over the playable area orders of magnitude more difficult over time. This is partly why we think it will be immune to AI supremacy. There will still be AIs that can play it, but they won't be able to properly determine odds of winning since board end-states can't be calculated in finite time. This means the AI will be reduced to simple heuristic choices instead of being able to see absolute end-states and definite probabilities. This makes any AI only as good as a human.
There are two ways to win, either capture the commander (equivalent to capturing the king in chess) or until someone surrenders; attrition is a real strategy we allowed so the games could continue forever and get exponentially more complicated over time - it is up to the player to win outright or test their will by simply never giving up.
:: Pieces, Movement, & Rules ::
There are four kinds of pieces - Fortifiers, Aggressors, Interdictors, and Commanders. There is only one Commander on the board per player and the game is over when it is captured. You must place at least one of each piece and have a total of 19 pieces placed before starting. Players do not know each other's placements until starting the game. You can only move onto a space if it is empty, you are capturing a piece that is currently positioned there, or you are occupying a Fortifier (explained below).
FORTIFIER: can move up to 2 spaces in a straight line; can only capture other fortifiers; cannot occupy any other piece's space; can be promoted to an Aggressor or Interdictor if behind the enemy starting line; when occupied, can only move 1 space at a time. AGGRESSOR: can move up to 3 spaces straight or 2 spaces in any direction; can capture every piece except Fortifiers; can chain one additional capture if the first capture is within 2 spaces of the originating position; can occupy Fortifiers - doing so allows unlimited unidirectional movement but you cannot move through other pieces. INTERDICTOR: unlimited unidirectional movement; can capture every piece; can occupy Fortifiers - allows for unlimited unidirectional movement in which you can jump over as many other pieces as you want. You can only have one Interdictor on the board at a time unless you promote a Fortifier. COMMANDER: cannot move on its own unless in check or its position is swapped with another piece that had the Commander in its range; can capture any piece within 1 space of it even if not in check; can occupy Fortifiers. When a Commander occupies a Fortifier, attempting to capture that Commander instead results in the occupied Fortifier & the attacker both getting removed from play. The Commander cannot place itself in check, the same as Chess, however unlike Chess the Commander does not have to move when in check. This is due to the way draws occur in Stratic (see rule on draws). If a draw is not possible, then the Commander does have to move out of check.
Piece Movements
Occupation means two pieces occupying the same space, stacked in 3D (like Gungi). Any Fortifier can be occupied by any other piece except other Fortifiers. To remove an occupier you must capture the occupying piece, which means you must be capable of occupying that same space after as well. An occupied Fortifier cannot be targeted for capture by any piece except its occupier. An occupied Fortifier can move even if its occupier is an opponent's piece, but it takes the occupying piece with it. The benefits of occupation do not apply until the next movement after you have occupied a Fortifier. The benefits only last for the first movement of a piece off its Fortifier. You cannot start a game with occupied positions.
Turns in Stratic allow the movement of only one piece at a time, with turns alternating between players. There is no zugzwang, meaning you do not have to move if you don't want to, including during your first turn. You can indefinitely pass your turn if you desire. This is to allow the realism of battles of attrition and also means you can wait to see how your enemy develops their pieces, breaking the strictness of strategy around being first to move. Special conditions allow doubled movement - these are called operations. If you pass on two or more turns in a row, you get one extra movement on the next turn you take to move. This does not stack, you only get one extra movement no matter how many turns you passed on.
The Board refers to the 10x10 grid the pieces start on. Starting formations can only be placed within a 2-row space on one of the opposing ends of the board and the space this occurs in is demarcated by the colored 'starting lines'. The 'midboard' is the rectangular space between the two starting lines; it is static and does not grow with board expansion. The 'trough' or 'trench' is the horizontal space between the two starting lines which does grow with board expansion.
Expansion refers to the growth of the board in every direction by one unit (inspired by Prosfair from BBB). Expansion starts occuring after the first two rounds pass (four turns total), then again after three more rounds have passed (six turns), then again after four more rounds have passed (eight turns), then five more rounds (ten turns), and so on, growing by 1 each cycle. The reason for this non-constant expansion is to quickly expand the board in the beginning of the game and then slow expansion for the mid-to-late game. Infinite expansion occurs in the official game, but this is obviously not possible on physical boards so we limit physical boards to an expansion range of eight. Physical boards also don't require infinite rulers to identify their grid spaces with, and so using A-Z and 1-26 instead of negative letters and numbers may be preferable.
Reinforcements are new pieces placed after the game has started (like Shogi). There are two ways to gain reinforcement pieces. The first is by having control of the midboard during expansion (explained in the next paragraph) and the second is from your opponent taking more than a set time to make a move. The first method gains you a number of pieces equal to the number of pieces you already have in the midboard. The second method is only applicable in games with time controls and only exist to make games end faster; this mechanic is not required and may not be applicable to games against an AI engine. These two methods can be stacked. When you gain a reinforcement, it can only be a fortifier or aggressor, but it can be placed anywhere on the board as long as it is not past the opponent's starting line. An exception to this is if your Commander is past the opponent's starting line, as you can also place a reinforcement within one square of your Commander no matter the position of your Commander. Reinforcements must be placed before any other movements in a turn and you must place alloted reinforcements. You do not get additional time to place reinforcements. If you place a reinforcement Fortifier in a position that would also allow for promotion, then you may also promote that piece in the same turn before moving.
:: Additional Rules ::
Direct checks (next-turn single-movement mates) need to be called but indirect checks (next-turn multiple-movement mates) do not. This means double movements from attrition or double captures from Aggressor pieces can mate and end the game without warning.
Draws: if your commander gets captured but you could have similarly captured your opponent's commander in the very next turn, you may do so and call the game a draw. A draw can also be called if the players agree to end the game without a clear victor. This will usually occur when it becomes clear that the game will go on infinitely and neither player has the will to outlast attrition.
Truces are when both players agree to pause the timer on the game and come back at a later time. This is a necessary function for indefinite and correspodence games.
Starting Formations must contain 19 pieces each. 19 was chosen since you can't score 19 in cribbage and an odd number of pieces on an even board works out well in the meta. To test placements and formations you can use this tool by Cozmic.
Example Formations
The two on the left were the starting formations of the first game ever played, before the rules for piece movements and board size were finalized (this setup is no longer possible). The game was played by Snax (top) versus Sphlem (bottom).
Time controls: to make Stratic games capable of continuing infinitely, the deafult game mode for Stratic uses time controls that count up instead of down. There must always be a limit on the amount of time a player can take to move (with 1 minute being an ideal time in our tests), and if that limit is hit, it becomes the other player's turn, with a single reinforcement piece granted from the idleness of the prior player. There will obviously be time controls that count down as well, to force games to complete so the human players can move on, but these finite games are less important to the ranking system since they portend bad war theory.
:: Planned Variants ::
True Endless: capturing the commander no longer ends the game, and every captured piece is a piece the opponent gets to place back on their next turn, so the number of pieces each player has never goes down, only up over time. This variant is designed to be truly endless. This is so that we can host The Endless Tournament, in which all users of the site pick a side of a single featured true endless variant game on account creation and are permanently locked to that side. This means every account is automatically in this single endless game. You can vote for a piece to move on your side and for any reinforcements to be placed. Your ELO is the weight added to your vote, meaning if you have 1500 ELO then it is like 1,500 votes were cast for whatever move you selected. At the end of the 24 hour voting period, the movement with the most votes is what actually gets played for your side. There is only one turn per day, which means one turn per side every two days. At the end of each month, the side that scored the most points through captures wins that months cash prize which is then distributed evenly between all the accounts that voted on moves that actually got played. Fortifiers are 1 point, Agressors 2 points, Interdictors 4 points, and Commanders 8. Promotions count as 1 point.
Partners: this variant allows four or more players on the same board. The starting lines extend infinitely with board expansion, so you can just connect two boards side-by-side to start and have expansion carry out rectangularly instead of square-wise. This means four players can play on the same new board in the same space. Additionally, you could add more boards side-by-side and have a large front simulated to toy with more realistic war theory.
4D Stratic: because this is a tactical level wargame designed to teach people the basics of combat tactics and war theory, we want to also represent space combat. To do this we add one dimension to the board so it goes from a 2D square grid to a 3D cube grid. Pieces still move and behave the same as normal but have another dimension to act in. We call this 4D instead of 3D because the normal game is technically already 3D since multiple pieces can occupy the same space; similarly, multiple pieces can occupy the same space in the 3D cube grid and so there is technically another dimension of space being utilized, making it 4-dimensional. Plus the joke of 4D Chess. 4D Stratic can be combined with the Fog of War variant below for optimal space sim.
Antistratic: the goal in this variant is to lose all your pieces first. Just like Antichess, the main mechanic is that if a piece can capture, then it is forced to capture, and the Commander is no longer a special piece since all pieces must be lost in order to win. This is difficult because having a presence in the midboard means you are likely to get reinforcements, and reinforcements must be played.
Fog of War: to add complexity to Stratic - to make it more in line with modern strategy games - a fog of war mechanic is added whereby the only spaces a player can see are the ones within a 3-block radius around each of their own pieces. The Fortifiers are special in that they can see a 5-block radius around them. Further, reinforcements can only ever be placed within a 9-block radius of your Commander and in a space not obscured by the fog of war. In this variant, pieces may start fortified. Additionally, there are three new piece types added for this variant. The first is the Scout, which can move up to four squares in any direction or sequence, can capture the Commander directly (even when fortified) but cannot capture any other piece, can see a 5-block radius, and can occupy a Fortifier, giving it a sight radius of 7 blocks. Like the Commander, only one Scout can be placed on the board per side. The second piece type is the Viper, which can move up to five squares in any direction or sequence, can capture every piece except Fortifiers, can only see one block around it, and can occupy a Fortifier, giving it no special properties. What makes the Viper special is that after it has captured a piece, if it still has movement left over then it can continue moving and capturing everything in its path. Only two Vipers can be placed on the board and Vipers cannot be selected as reinforcements. The third piece type is the Bureaucrat, which can move to any unoccupied position on the board, cannot capture any piece, can occupy fortifiers, but otherwise exists soley to get in the way and slow things down. Only two bureaucrats can be placed by a player at a time. For this variant of Stratic, the board starts as 12x12 and starting formations have 25 pieces instead of the usual 19.