Have a piece to the back row at the beginning of your turn.

Pieces can move one step, like a chess king, or jump over another friendly piece. Capture is possible by jumping a friendly piece and landing on an enemy.

General comments:

- Requires αβ search to play well.

Play: Combinatorial

Family: Combinatorial 2015

Mechanism(s): Race,Capture

Components: Board

BGG Entry | Vault |
---|---|

BGG Rating | 7.21739 |

#Voters | 23 |

SD | 1.58681 |

BGG Weight | 2 |

#Voters | 1 |

Year | 2015 |

User | Rating | Comment |
---|---|---|

mrraow | 8 | Fast, brutal, but with scope for tactical and strategic play. Feels to me like chess stripped down to the bare minimum. Expect Shogi-style forcing endgames, if you can see them. |

CarlosLuna | 7 | |

1974vertigo2009 | N/A | PnP - 1135 |

AbstractStrategy | 8 | |

fogus | 6 | An interesting game of reaching your opponent's back row with a unique (AFAIK) movement mechanism where certain configurations of pieces allow one to "vault" over one's pieces to setup long range moments. Sadly, this mechanism makes it very difficult for me to see the lines of play. More practice might help. |

cdunc123 | 9 | Ingenious game. Elegant rules. Simple pieces. The few games I've played suggest that it has some nice depth. (Slight worry about the potential for cycles, but some far we have not needed an anti-cycle rule, a la superko.) It has a nice puzzle-like feel. A brain burner! |

Thesse1955 | 8 | |

pleclenuesse | 8 | |

grasa_total | 4 | A pretty good game except that the mental busywork of figuring out which moves are possible and tracking which spaces are threatened... well, there are better games using the exact same pieces. |

Marcul01 | N/A | Homemade copy |

lulu35 | N/A | Print&Play |

Arcanio | 7 | |

tokoro | 9 | |

nestorgames | 9 | Still exploring it, but I like it so far. Lots of options each turn, with just a bunch of pieces. |

dlow | 6 | I like Onager, and this game distils things down to the most abstract application of the "vault" mechanic. More of a brain-burner, though, and feels more like hard work. In my dotage, I'm finding I enjoy these abstract-abstracts less than I used to... But it is without doubt an exceptionally elegant game. |

rseater | 6 | Very hard to visualize all the moves, so victory is more by mistake than cleverness. I suspect that with practice this would be come less interesting, but it is delightfully convoluted and weird as is. |

Aldaron | 9 | |

nonzer0 | 9 | Vault is a fantastic game with devilishly tricky tactics. Games are very fast-paced, and overly passive play generally leads to swift, gruesome defeat. I'm generally finding board sizes 6x6, 8x8, and 10x10 optimal. Haven't tried nonsquare boards yet, they might be interesting as well. |

nycavri | 7 | |

Yuki Shimizu | 4 | |

carmenpf7 | 9 | |

akat | 9 | I like jumping mechanism ! |

at010 | 7 | |

mjf71 | 5 | 2 30m |

PSchulman | 6 | |

AndrePOR | N/A | Print & Play Edition |

jmdsplotter | 6 |

AI | Wins vs prev level | Draws | Losses | #Games | Win% |
---|---|---|---|---|---|

Random | |||||

R?? + ocqBKs (t=v0.01s) | 36 | 0 | 0 | 36 | 100.00 |

R?? + ocqBKs (t=v0.03s) | 36 | 1 | 10 | 47 | 77.66 |

R?? + ocqBKs (t=v0.20s) | 36 | 1 | 2 | 39 | 93.59 |

R?? + ocqBKs (t=v1.48s) | 35 | 3 | 7 | 45 | 81.11 |

Level of Play: **strong** beats **weak** 60% of the time (lower bound with 90% confidence).

Size (bytes) | 29111 |
---|---|

Reference Size | 10328 |

Ratio | 2.82 |

Ai Ai calculates the size of the implementation, and compares it to the Ai Ai implementation of the simplest possible game (which just fills the board). Note that this estimate may include some graphics and heuristics code as well as the game logic. See the wikipedia entry for more details.

Playouts per second | 3588.15 (278.69µs/playout) |
---|---|

Reference Size | 363332.49 (2.75µs/playout) |

Ratio (low is good) | 101.26 |

Tavener complexity: the heat generated by playing every possible instance of a game with a perfectly efficient programme. Since this is not possible to calculate, Ai Ai calculates the number of random playouts per second and compares it to the fastest non-trivial Ai Ai game (Connect 4). This ratio gives a practical indication of how complex the game is. Combine this with the computational state space, and you can get an idea of how strong the default (MCTS-based) AI will be.

1: White win % | 52.74±2.76 | Includes draws = 50% |
---|---|---|

2: Black win % | 47.26±2.75 | Includes draws = 50% |

Draw % | 1.67 | Percentage of games where all players draw. |

Decisive % | 98.33 | Percentage of games with a single winner. |

Samples | 1258 | Quantity of logged games played |

Note: that win/loss statistics may vary depending on thinking time (horizon effect, etc.), bad heuristics, bugs, and other factors, so should be taken with a pinch of salt. (Given perfect play, any game of pure skill will always end in the same result.)

Note: Ai Ai differentiates between states where all players draw or win or lose; this is mostly to support cooperative games.

Rotation (Half turn) lost each game as expected.

Reflection (X axis) lost each game as expected.

Reflection (Y axis) lost each game as expected.

Copy last move lost each game as expected.

Mirroring strategies attempt to copy the previous move. On first move, they will attempt to play in the centre. If neither of these are possible, they will pick a random move. Each entry represents a different form of copying; direct copy, reflection in either the X or Y axis, half-turn rotation.

Game length | 29.98 | |
---|---|---|

Branching factor | 55.61 | |

Complexity | 10^51.78 | Based on game length and branching factor |

Computational Complexity | 10^6.63 | Sample quality (100 best): 34.05 |

Samples | 1258 | Quantity of logged games played |

Distinct actions | 2959 | Number of distinct moves (e.g. "e4") regardless of position in game tree |
---|---|---|

Killer moves | 7 | A 'killer' move is selected by the AI more than 50% of the time Killers: a5-i3,a2-c6,j3-h5,a7-a1,b9-b5,a6-a2,i7-i9 |

Good moves | 1352 | A good move is selected by the AI more than the average |

Bad moves | 1607 | A bad move is selected by the AI less than the average |

Terrible moves | 780 | A terrible move is never selected by the AI Terrible moves: f4-b8,j8-h8,f4-b4,j8-h4,f4-b6,a5-i7,a5-i5,g6-a2,a5-i1,g6-a8,g6-a4,g6-a6,e2-c2,i6-i2,i6-i8,b7-f9,b7-f7,b7-f3,b7-f1,j8-f4,j8-f2,a5-g7,a5-g3,f4-d2,j8-f8,c10-a4,c9-i5,i6-g6,b7-d7,h4-j2,b7-d3,h4-j4,h4-j6,h4-j8,j8-d4,g2-i6,g2-i4,a4-c10,g2-i8,a9-a1,a9-a3,b6-j10,a9-a7,j8-d8,j8-d6,h4-h8,c9-c7,i6-e2,i6-e4,b7-j9,h4-h2,b7-j7,b7-j5,h4-h6,b7-j3,b7-j1,g2-g4,j8-b8,j8-b6,j8-b4,h4-f6,i6-c2,i6-c4,e2-a6,i6-c6,e2-a4,i6-c8,b7-h9,h4-f2,b7-h3,a5-a6,a5-a1,d7-h7,h4-d4,i6-a2,i6-a4,i6-a6,b3-j9,i6-a8,b3-j3,b3-j5,e9-i5,d7-j3,d7-j7,d7-j5,j4-i4,c9-a7,j4-i5,h4-b4,c9-a5,h4-b8,a5-e3,i2-i8,i2-i6,d7-d9,g2-a6,c5-g7,c5-g5,b7-b9,b7-b3,d6-j10,a5-c9,j4-f2,a5-c3,b7-a7,d7-f7,j4-f6,c5-i9,a5-b6,b4-j10,c5-i3,a2-a4,i3-c7,i3-c5,i3-c3,d4-j6,d4-j8,a2-a8,e10-a4,a2-a6,c6-a4,c6-a6,c6-a2,h1-b7,f8-h8,i6-e10,e6-i8,j1-j3,i3-a9,i3-a7,i3-a5,i3-a3,e6-i4,i4-i10,f8-b8,b4-d6,b4-d8,b4-d2,b4-d4,d4-f4,d4-f8,b4-b8,b4-b6,c6-c10,e6-e2,e6-e8,a10-a4,d4-h4,h8-j4,h8-j2,h8-j8,h8-j6,c2-c4,g6-i8,g6-i4,f4-j2,f4-j8,f4-j4,d4-b6,d4-b8,h8-h2,d4-b4,h8-h6,h8-h4,g6-g8,g6-g4,a9-c3,a9-c5,a9-c7,h10-b4,a9-c9,e6-a4,i4-e10,g6-e2,a9-i5,h8-d8,j8-j7,j8-j4,g6-c2,g6-c4,a10-i4,g6-c8,c2-a6,c2-a4,f4-h4,c2-a8,h8-b8,h8-b4,h7-b7,h7-b5,c8-i6,c8-i8,c8-i4,i9-a7,b6-j8,b6-j6,h7-b3,b6-j4,b6-j2,g5-e3,g5-e7,f3-d3,j7-i8,j7-i7,e1-i7,b6-h8,b6-h6,b6-h4,b6-h2,g5-c3,g5-c5,c1-a5,f3-f5,c1-a7,h3-j9,c8-e6,c8-e8,i5-i1,i5-i7,h3-j3,h3-j5,h3-j7,j7-f5,g5-a7,g5-a9,g5-a3,g5-a5,a8-c6,a8-c8,j7-f9,i5-g3,i5-g5,i5-g7,i5-g9,h3-h5,j7-d9,j7-d7,a8-a7,j7-d5,c8-a8,c8-a2,c8-a4,i5-e3,i5-e9,b6-b2,e8-i6,j7-b9,j7-b7,j7-b5,j7-b3,h3-d3,c8-c4,c8-c6,e1-a7,i5-c3,i5-c5,i5-c7,i5-c9,a4-a5,a4-a8,c4-i8,h3-b3,h3-b5,h3-b7,c4-i4,i5-a3,i5-a5,b6-f8,b6-f6,i5-a7,b6-f4,b6-f2,j3-j2,j3-j1,a4-g6,a4-g4,d6-h8,d6-h6,j3-j7,d6-h4,b6-d8,b6-d6,b6-d4,b6-d2,e8-g8,j3-h3,a4-e8,a4-e6,a4-e4,a4-e2,d6-j8,j3-h9,d6-j2,d6-j6,d6-j4,f10-j6,f10-j4,j4-d6,j4-d4,c5-c3,c5-c7,b3-b7,b3-b9,j6-b10,f7-h3,f7-h7,e9-a5,e9-a7,d7-b3,d7-b5,j4-b6,j4-b4,j4-b2,c5-e3,c5-e9,c5-e7,g9-g5,f7-j5,f7-j3,f7-j9,f7-j7,e5-g3,b6-b10,e5-g5,e5-g7,i2-a4,d3-h3,d3-h5,b3-f9,b3-f3,f7-d7,e5-i7,d3-j7,c5-a5,a6-i10,c5-a3,b3-d9,b3-d1,c5-a9,c5-a7,e5-c3,i9-i3,i9-i7,i9-i5,a8-i2,h7-j3,d3-d5,a4-i10,h7-j7,e5-c7,a8-g2,a8-g6,j6-f10,a8-g8,e5-e3,e5-e7,i9-g5,d3-f5,h7-h9,f7-b7,a8-e6,f7-b3,h7-f9,h7-f3,g5-i7,g5-i3,g5-i5,f3-h5,f3-h7,h7-d7,e5-a3,d3-b5,d3-b7,d3-b9,d3-b3,e5-a5,e5-a7,a8-a10,e5-a9,h7-d3,g5-g7,g5-g3,a8-i4,a8-i6,a8-i8,g5-g9,f3-j7,a6-e10,f3-j3,f3-j5,g4-g2,a4-e10,d9-j5,a7-c9,d9-j7,i8-c6,j6-j10,a7-b6,h6-f6,h6-f4,f2-j6,a7-a8,f2-j4,c2-a10,d2-b6,d2-b8,i8-a4,i8-a6,i8-a8,b5-j5,b5-j7,b5-j1,h6-d4,b5-j3,j6-j7,a7-g1,a7-g3,a7-g5,g4-c8,a7-g9,j6-i7,h6-b6,h6-b4,h6-b8,c7-i5,c7-i7,c7-i3,f2-f6,i4-i8,g4-a4,g4-a2,a7-e1,g4-a8,a7-e3,g4-a6,a7-e5,i4-j5,b9-b3,d10-j4,a6-a10,j6-f4,a3-g9,a3-g7,a3-g3,i4-g8,i4-g4,i4-g2,d9-b7,a4-a10,h2-j8,c7-e7,f9-j7,b5-d7,f9-j5,b5-d9,b5-d3,b5-d1,h2-j4,h2-j6,a3-e7,a3-e3,i4-e8,b5-c6,i4-e2,j6-d8,j6-d6,j6-d4,c7-g7,c7-g3,b5-b9,b5-b1,b5-b3,h2-h4,e7-i7,e7-i9,i4-c8,i4-c6,e7-i3,i4-c2,d5-j7,j6-b8,j6-b6,d5-j3,j6-b4,d5-j5,c7-a5,c7-a7,c7-a3,b5-h7,b5-h9,b5-h3,b5-h5,c7-a9,b5-h1,a3-i9,i4-a8,a3-i7,i4-a6,a3-i5,i4-a4,a3-i3,i4-a2,c7-c9,c7-c5,b5-f9,b5-f7,b5-f3,c4-e4,c4-e8,e8-a2,e8-a4,e8-a6,d6-d2,d6-d8,e8-a8,a2-a10,g1-a7,j3-f3,j3-f5,c4-g8,c4-g2,g8-i6,g8-i8,e8-c8,i10-a4,d6-f6,j3-d7,j3-d3,c4-a4,c4-a2,g8-g6,f6-h2,b2-j6,c4-a8,c4-a6,b2-j4,f6-h4,e4-i8,e4-i4,j3-b7,j3-b3,j3-b5,c4-c6,f6-j4,f6-j2,i6-c10,c4-c8,f6-j8,f6-j6,d6-b8,d6-b2,d6-b6,d6-b4,h6-f10,g8-c6,f6-d4,b9-h5,g8-a4,a7-i3,g8-a6,a7-i7,g8-a8,i8-i2,i8-i6,a7-i1,d2-j6,b2-b8,b2-b4,e4-a2,i8-g2,e4-a8,e4-a6,e4-a4,h6-j6,h6-j4,h6-j8,f6-b6,g4-i4,g4-i8,g4-i6,f6-b4,e4-c4,i8-e6,e4-c6,h6-h4,h6-h2,h6-h8,b9-j5,h5-h9,d1-b3,i7-g7,i7-g9,e3-a5,h5-h3,b8-d2,h5-h7,a6-e2,a6-e4,a6-e6,f1-j7,h5-f9,h5-f7,e3-c3,i7-e1,h10-j4,i7-e9,h10-j6,e3-c7,b8-b6,b8-b4,h5-f3,j9-b5,g3-i3,g3-i5,a6-c4,h5-d7,h5-d5,i7-c3,i7-c5,b8-h8,b8-h6,b8-h4,g3-g5,a6-i2,a6-i6,d8-j4,d8-j8,d8-j6,h5-b5,h5-b3,h5-b9,h5-b7,i7-a1,i7-a3,i7-a5,i7-a7,i7-a9,b8-f4,j5-j6,j5-j4,j5-j1,g3-e5,a6-g2,a6-g4,a6-g8,c6-g8,c6-g2,c6-g4,b4-h8,b4-h2,b4-h4,j5-h5,f1-b7,j5-h3,j5-h1,g3-c3,j5-h9,h1-j7,c6-i8,c6-i6,b4-f8,b4-f4,j5-f1,i3-i7,g3-a3,i3-i5,g3-a5,d8-h6,j5-f7,j5-f5,c6-c8,c6-c2,c6-c4,f8-j6,f8-j4,a6-b7,f8-j8,i3-g7,i3-g5,d8-b4,i3-g3,d8-b8,d8-b6,j5-d5,j5-d3,c6-e8,b4-j8,b4-j4,b4-j6,b4-j2,d8-d6,j5-b9,j5-b7,j5-b1,j2-j4,b6-d10,e7-e9,d5-f3,d5-f7,j2-j8,c3-i5,h2-b6,c3-i3,f9-b7,e7-g7,d5-h5,h9-j3,h9-j5,h9-j1,h9-j7,a6-g10,e7-a3,e7-a5,d5-b7,b5-a4,b5-a5,h9-h3,d5-b3,d5-b5,e7-a7,e7-a9,h9-h7,a3-c9,f5-j3,j6-d10,f5-j9,f5-j7,f5-j5,a3-a1,e7-c7,d5-d3,d5-d7,h9-f5,a3-a7,g7-i3,c3-g3,g7-i9,g7-i5,g7-i7,b1-j7,e3-i5,e3-i3,d1-j5,j2-b6,c3-a3,g7-g3,c3-a7,f5-f7,c3-a5,c3-a9,b8-j8,b8-j6,b8-j4,b8-j2,c3-c5,j9-j1,j9-j3,f5-h9,j9-j7,f5-h7,a6-c10,f5-h3,f5-b9,f5-b7,i7-j6,i7-j7,g7-c7,f5-b3,j9-h7,i7-i5,h5-j5,h5-j3,h5-j9,g7-a3,g7-a9,g7-a5,g7-a7,f5-d5,f5-d3,j9-f5 |

Samples | 1258 | Quantity of logged games played |

This chart is based on a single playout, and gives a feel for the change in material over the course of a game.

This chart shows the best move value with respect to the active player; the orange line represents the value of doing nothing (null move).

The lead changed on 96% of the game turns. Ai Ai found 1 critical turn (turns with only one good option).

Overall, this playout was 13.00% hot.

This chart shows the relative temperature of all moves each turn. Colour range: black (worst), red, orange(even), yellow, white(best).

Table: branching factor per turn.

This chart is based on a single playout, and gives a feel for the types of moves available over the course of a game.

Red: removal, Black: move, Blue: Add, Grey: pass, Purple: swap sides, Brown: other.

0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|

1 | 28 | 812 | 17164 | 193700 | 242048 | 344206 | 13498147 |

Note: most games do not take board rotation and reflection into consideration.

Multi-part turns could be treated as the same or different depth depending on the implementation.

Counts to depth N include all moves reachable at lower depths.

Inaccuracies may also exist due to hash collisions, but Ai Ai uses 64-bit hashes so these will be a very small fraction of a percentage point.

No solutions found to depth 7.

Moves | Animation |
---|---|

c1-c2,e10-f9,c2-d2,g10-e10,a1-g3,f9-e8,i1-e5,d10-f6,d2-e2,j10-b2,e2-e8 | |

d1-d2,e10-f9,c1-d1,g10-e10,a1-g3,f9-e8,i1-e5,d10-f6,d2-e2,j10-b2,e2-e8 | |

e1-d2,e10-f9,c1-e1,g10-e10,a1-g3,f9-e8,i1-e5,d10-f6,d2-e2,j10-b2,e2-e8 | |

c1-d2,c10-d9,a1-g3,d9-e8,h1-f5,e10-e6,d2-h8,i10-i9,e1-c1,j10-h8 | |

c1-d2,c10-d9,a1-g3,h10-g9,h1-f5,a10-g8,e1-g9,j10-d6,d2-h8,b10-a9 | |

c1-d2,c10-d9,a1-g3,h10-g9,h1-f5,g9-f8,j1-h1,i10-c6,h1-d9,b10-d2 | |

c1-d2,e10-f9,a1-g3,f9-g8,h1-f5,j10-d6,g3-h4,d6-e6,d2-e2,c10-d9 | |

c1-d2,e10-f9,a1-g3,f9-g8,h1-f5,j10-d6,g3-h4,d6-e6,d2-e2,h10-b2 | |

c1-d2,h10-g9,a1-g3,c10-d9,h1-f5,a10-g8,e1-g9,j10-d6,d2-h8,b10-a9 | |

c1-d2,h10-g9,a1-g3,c10-d9,h1-f5,g9-f8,j1-h1,i10-c6,h1-d9,b10-d2 | |

c1-d2,h10-g9,d2-e3,g9-g8,e1-e5,i10-e6,a1-i9,a10-i10,h1-b9,g8-g7 | |

e1-e2,f10-e9,b1-h3,d10-f8,j1-f5,i10-c6,e2-f2,h10-d6,f2-f8,c6-b7 |