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The Chess Variant Pages



This page is written by the game's inventor, Adam DeWitt. This game is a favorite of its inventor.

Suzumu Shogi

When I first came across Tenjiku Shogi via Wikipedia back in 2017, I decided to use some of the piece names when I first came up with Shosu Shogi. When I came across H. G. Muller's Interactive Diagrams page, I began messing around with it and creating diagrams of some of my own games. Eventually, I came across images of some of his Mnemonic pieces (I had been looking for images of just the pieces without them being a board for a while at that point) thanks to his CVP page on Chu Shogi. Shortly after that, I started using those pieces to create a makeshift interactive diagram for my own version of Tenjiku Shogi. After nearly a year of experimenting with piece moves, I settled on a set of moves that I deemed suitable at the time. I decided to name the game Suzumu Shogi (進将棋 suzumu shōgi, literally "advance shogi," but meant in the sense of "hexadecimal shogi") after looking up Japanese translations of the word hexadecimal. Over time, however, I considered the movesets for the Fire Demon and range-jumping generals to be too weak, and worked on making them more interesting. I found suitable movesets for the jumping generals, but I eventually considered the Fire Demon to still be too weak. Eventually I settled on the current Fire Demon move, but the new starting position didn't solve all of the problems I was facing due to the new ranged-jumping move, so I added the Violent Dragon and Violent Horse from Chushin Shogi. It wouldn't be until November 5, 2021 that the rules would be set in stone for good.

Setup

Suzumu Shogi uses the same pieces as Tenjiku Shogi, plus the Violent Dragons and Violent Horses, and a similar initial position. An interactive diagram has been provided (The Javascript source code was written by H. G. Muller) to make it easier to understand how each piece moves. The Mnemonic piece directory uses H. G. Muller's Mnemonic pieces. The Shogi pieces used in the diagram and the table in the Pieces section are my own pieces, made using a free online pixel art drawing tool called Pixilart.

files=16 ranks=16 holdingsType=1 promoOffset=37 promoZone=5 maxPromote=32 promoChoice=+ royal=47 royal=70 graphicsDir=../membergraphics/MSmitsugumi-shogi/ whitePrefix=w blackPrefix=b lightShade=#FFFF80 darkShade=#FFFF80 graphicsType=png squareSize=41 symmetry=rotate pawn:P:fW:p:a5-p5 dog:D:bFfW:d:e6,l6 knight:N:N:n:b1,o1 iron general:I:fFbW:i:d1,m1 copper general:C:fFvW:c:e1,l1 silver general:S:FfW:s:f1,k1 blind tiger:BT:FsbW:bt:f2,k2 ferocious leopard:FL:FvW:fl:c1,n1 gold general:G:WfF:g:g1,j1 drunk elephant:DE:FsfW:de:i1 reverse chariot:RV:vR:rv:a2,p2 lance:L:fRbW2:l:a1,p1 kirin:KY:FD:ky:b2 phoenix:PH:WA:ph:o2 side mover:SM:WsR:sm:a4,p4 vertical mover:VM:WvR:vm:b4,o4 bishop:B:B:b:c3,n3 side soldier:SS:WsRfW2:ss:a3,p3 vertical soldier:VS:WfRsW2:vs:b3,o3 rook:R:R:r:c4,n4 dragon horse:DH:BW:dh:d3,m3 dragon king:DK:RF:dk:e3,l3 chariot soldier:CS:BvRsW2:cs:c2,d2,m2,n2 horned falcon:HF:BbsRfWfDfcavWfmabW:hf:d4,m4 soaring eagle:SE:RbBfFfAfcavFfmabF:se:e4,l4 lion:LN:KNADcaKmcabK:ln:g2 queen:Q:Q:q:j2 bishop general:BG:(paf)2cBmcB:bg:f4,k4 rook general:RG:(paf)2cRmcR:rg:g4,j4 violent horse:VH:R3(paf)2cBmcB:vh:h4,i4 violent dragon:VD:B3(paf)2cRmcR:vd:e2,l2 water buffalo:WB:BsRvW2:wb:f3,k3 free eagle:FE:QADcaFmcabF:fe:i3 lion hawk:LH:BWNADcaKmcabK:lh:h3 vice general:VG:(paf)2cBmcB(a)2KmabK:vg:i2 great general:GG:(paf)2cQmcQ:gg:h2 fire demon:FD:QympacabQ(a)2KmcabK(a)2mpacabK:fd:g3,j3 tokin:+P:WfF:p2: multi general:+D:bBfR:d2: side soldier:+N:WsRfW2:n2: vertical soldier:+I:WfRsW2:i2: side mover:+C:WsR:c2: vertical mover:+S:WvR:s2: flying stag:+BT:KvR:bt2: bishop:+FL:B:fl2: rook:+G:R:g2: crown prince:+DE:K:de2: whale:+RV:bBvR:rv2: white horse:+L:fBvR:l2: lion:+KY:KNADcaKmcabK:ky2: queen:+PH:Q:ph2: free boar:+SM:BsR:sm2: flying ox:+VM:BvR:vm2: dragon horse:+B:BW:b2: water buffalo:+SS:BsRvW2:ss2: chariot soldier:+VS:BvRsW2:vs2: dragon king:+R:RF:r2: horned falcon:+DH:BbsRfWfDfcavWfmabW:dh2: soaring eagle:+DK:RbBfFfAfcavFfmabF:dk2: heavenly tetrarch:+CS:jQcabK:cs2: bishop general:+HF:(paf)2cBmcB:hf2: rook general:+SE:(paf)2cRmcR:se2: lion hawk:+LN:BWNADcaKmcabK:ln2: free eagle:+Q:QADcaFmcabF:q2: vice general:+BG:(paf)2cBmcB(a)2KmabK:bg2: great general:+RG:(paf)2cQmcQ:rg2: horse master:+VH:(paf)2cBmcBKaKmabK:vh2: dragon master:+VD:(paf)2cRmcRKaKmabK:vd2: fire demon:+WB:QympacabQ(a)2KmcabK(a)2mpacabK:wb2: king:K:K:k:h1

Only the location of the pieces of one side are mentioned below, in normal (Chess-like) coordinates. The setup for the other side can be obtained by rotating the board 180 degrees. XBetza notation is included for easier reference.

First rank

Second rank

Third rank

Fourth rank

Fifth and sixth rank

Pieces

The move of pieces from the initial setup is already given in Betza notation above, and should also be clear from the mnemonic piece glyphs in the image above. The Betza notation move of the piece types that can only be obtained through promotion is given below.

 The pieces in the table are the same pieces used in the interactive diagram above. 

Piece Promoted Piece



King
The King moves one space in any direction.

The King can move into check at any time, although this is almost always a blunder.

The King does not promote.



Fire Demon

The Fire Demon can slide in any orthogonal or diagonal direction, or make an 'area move' - up to 3 King steps in independently chosen directions, stopping at the first capture. This includes skipping a turn. In addition, it has a unique burning ability: wherever the Fire Demon stops, it can optionally capture an adjacent enemy piece without moving. Or it can simply capture a piece without moving (igui).

It does not have a passive burning ability, unlike its Tenjiku Shogi counterpart.

The Fire Demon does not promote.



Great General
The Great General moves as a Queen but can jump up to two pieces along the line of attack when taking. The Great General does not promote.



Vice General
The Vice General moves as a Bishop but can jump up to two pieces along the line of attack when taking. In addition, it can make an 'area move' - up to 3 King steps in independently chosen directions, stopping at the first capture. It can skip a turn, but it does not have the lion power of igui. The Vice General does not promote.



Lion Hawk

The Lion Hawk moves either as a Bishop or as a Lion. This power includes jumping, igui and skipping a turn (see "Lion").

In other words, the Lion Hawk is a Lion enhanced by the diagonal moves of the Queen.

The Lion Hawk does not promote.



Free Eagle
The Free Eagle moves as a Queen. In addition, it can move one square in any diagonal direction twice. This power includes jumping, igui and skipping a turn (see "Lion"). So it can:
  • Jump directly to any square in the second square in any direction,
  • Capture any diagonally adjacent piece without moving (igui),
  • Capture a piece on a diagonally adjacent square, and then continue to any of the squares diagonally adjacent to that square, capturing up to two pieces (this is equivalent to 2 turns for a Ferz),
  • Stay in place without capturing anything if at least one diagonally adjacent square is empty, effectively passing a turn

In other words, the Free Eagle is a Queen enhanced by the diagonal moves of the Lion.

The Free Eagle does not promote.



Water Buffalo
The Water Buffalo can slide sideways or diagonally. In addition, it can slide one or two squares vertically.


Fire Demon

The Fire Demon can slide in any orthogonal or diagonal direction, or make an 'area move' - up to 3 King steps in independently chosen directions, stopping at the first capture. This includes skipping a turn. In addition, it has a unique burning ability: wherever the Fire Demon stops, it can optionally capture an adjacent enemy piece without moving. Or it can simply capture a piece without moving (igui).

It does not have a passive burning ability, unlike its Tenjiku Shogi counterpart.




Violent Dragon

The Violent Dragon moves as a Rook but can jump up to two pieces along the line of attack when taking. Additionally, it can step up to three squares diagonally.




Dragon Master

The Dragon Master moves as a Rook but can jump up to two pieces along the line of attack when taking. In addition, it can make a '2-square area move' - up to 2 King steps in independently chosen directions, stopping at the first capture. It can skip a turn, but it does not have the lion power of igui.




Violent Horse

The Violent Horse moves as a Bishop but can jump up to two pieces along the line of attack when taking. Additionally, it can step up to three squares orthogonally.




Horse Master

The Horse Master moves as a Bishop but can jump up to two pieces along the line of attack when taking. In addition, it can make a '2-square area move' - up to 2 King steps in independently chosen directions, stopping at the first capture. It can skip a turn, but it does not have the lion power of igui.




Rook General
The Rook General moves as a Rook but can jump up to two pieces along the line of attack when taking.


Great General

The Great General moves as a Queen but can jump up to two pieces along the line of attack when taking.




Bishop General
The Bishop General moves as a Bishop but can jump up to two pieces along the line of attack when taking.


Vice General

The Vice General moves as a Bishop but can jump up to two pieces along the line of attack when taking. In addition, it can make an 'area move' - up to 3 King steps in independently chosen directions, stopping at the first capture. It can skip a turn, but it does not have the lion power of igui.




Lion

The Lion has a special movement ability commonly called a 'lion move' or 'lion power'. It can make up to 2 King steps per turn, changing direction between them, even when this returns it to its starting square. It can make the first step as a jump, when it chooses to do so. So it can:

  • Jump directly to any square in the 5x5 area surrounding it,
  • Capture any adjacent piece without moving (igui),
  • Capture a piece on an adjacent square, and then continue to any of the squares adjacent to that square, capturing up to two pieces (this is equivalent to 2 turns for a King),
  • Stay in place without capturing anything if at least one adjacent square is empty, effectively passing a turn



Lion Hawk

The Lion Hawk moves either as a Bishop or as a Lion. This power includes jumping, igui and skipping a turn.




Queen

The Queen moves as it does in Chess - it slides orthogonally or diagonally.




Free Eagle

The Free Eagle moves as a Queen. In addition, it can move one square in any diagonal direction twice. This power includes jumping, igui and skipping a turn (see "Lion"). So it can:

  • Jump directly to any square in the second square in any direction,
  • Capture any diagonally adjacent piece without moving (igui),
  • Capture a piece on a diagonally adjacent square, and then continue to any of the squares diagonally adjacent to that square, capturing up to two pieces (this is equivalent to 2 turns for a Ferz),
  • Stay in place without capturing anything if at least one diagonally adjacent square is empty, effectively passing a turn



Soaring Eagle

The Soaring Eagle can slide orthogonally or diagonally backward. In addition, It can step twice, or jump two squares, diagonally forward, capturing up to two pieces. This power includes igui and skipping a turn, but not moving off the diagonal. (see "Lion").




Rook General

The Rook General moves as a Rook but can jump up to two pieces along the line of attack when taking.




Horned Falcon

The Horned Falcon can slide diagonally, sideways, or directly backward. In addition, It can step twice, or jump two squares, directly forward, capturing up to two pieces. This power includes igui and skipping a turn, but not moving off the orthogonal. (see "Lion").




Bishop General

The Bishop General moves as a Bishop but can jump up to two pieces along the line of attack when taking.




Chariot Soldier

The Chariot Soldier can slide vertically or diagonally. In addition, it can slide one or two squares sideways.




Heavenly Tetrarch

The Heavenly Tetrarch can slide in any orthogonal or diagonal direction. In addition, it can capture pieces on adjacent squares without moving (igui).

It cannot move to any adjacent square, and is not blocked from moving by pieces on those squares. However, it is not a range jumper and cannot jump a piece anywhere else in its path.




Dragon King

The Dragon King moves as it does in Shogi - it can move as a Rook or as a King.




Soaring Eagle

The Soaring Eagle can slide orthogonally or diagonally backward. In addition, It can step twice, or jump two squares, diagonally forward, capturing up to two pieces. This power includes igui and skipping a turn, but not moving off the diagonal. (see "Lion").




Dragon Horse

The Dragon Horse moves as it does in Shogi - it can move as a Bishop or as a King.




Horned Falcon

The Horned Falcon can slide diagonally, sideways, or directly backward. In addition, It can step twice, or jump two squares, directly forward, capturing up to two pieces. This power includes igui and skipping a turn, but not moving off the orthogonal. (see "Lion").




Rook

The Rook moves as it does in Chess - it slides orthogonally.




Dragon King

The Dragon King moves as it does in Shogi - it can move as a Rook or as a King.




Bishop

The Bishop moves as it does in Chess - it slides diagonally.




Dragon Horse

The Dragon Horse moves as it does in Shogi - it can move as a Bishop or as a King.




Vertical Soldier

The Vertical Soldier can slide directly forward or move one square directly backward. In addition, it can slide one or two squares sideways.




Chariot Soldier

The Chariot Soldier can slide vertically or diagonally. In addition, it can slide one or two squares sideways.




Side Soldier

The Side Soldier can slide sideways or move one square directly backward. In addition, it can slide one or two squares directly forward.




Water Buffalo

The Water Buffalo can slide sideways or diagonally. In addition, it can slide one or two squares vertically.




Vertical Mover

The Vertical Mover can slide vertically or move one square sideways.




Flying Ox

The Flying Ox can slide vertically or diagonally.




Side Mover

The Side Mover can slide sideways or move one square vertically.




Free Boar

The Free Boar can slide sideways or diagonally.




Phoenix

The Phoenix can move one square orthogonally or jump two squares diagonally.




Queen

The Queen moves as it does in Chess - it slides orthogonally or diagonally.




Kirin

The Kirin can move one square diagonally or jump two squares orthogonally.




Lion

The Lion has a special movement ability commonly called a 'lion move' or 'lion power'. It can make up to 2 King steps per turn, changing direction between them, even when this returns it to its starting square. It can make the first step as a jump, when it chooses to do so. So it can:

  • Jump directly to any square in the 5x5 area surrounding it,
  • Capture any adjacent piece without moving (igui),
  • Capture a piece on an adjacent square, and then continue to any of the squares adjacent to that square, capturing up to two pieces (this is equivalent to 2 turns for a King),
  • Stay in place without capturing anything if at least one adjacent square is empty, effectively passing a turn



Knight

The Knight moves as it does in Chess - it jumps to the nearest square that a Queen cannot.




Side Soldier

The Side Soldier can slide sideways or move one square directly backward. In addition, it can slide one or two squares directly forward.




Lance

The Lance slides forward or up to two squares directly backward.




White Horse

The White Horse can slide vertically or diagonally forward.




Reverse Chariot

The Reverse Chariot slides vertically.




Whale

The Whale can slide vertically or diagonally backward.




Drunk Elephant

The Drunk Elephant moves as a King except directly backward.




Prince

The Prince moves one space in any direction.

The Prince can move into check at any time, although this is almost always a blunder.




Blind Tiger

The Blind Tiger moves as a King except directly forward.




Flying Stag

The Flying Stag moves as a King or slides vertically.




Ferocious Leopard

The Ferocious Leopard moves one square diagonally or vertically.




Bishop

The Bishop moves as it does in Chess - it slides diagonally.




Gold General

The Gold General moves as it does in Shogi - it moves one square orthogonally or diagonally forward.




Rook

The Rook moves as it does in Chess - it slides orthogonally.




Silver General

The Silver General moves as it does in Shogi - it moves one square diagonally or directly forward.




Vertical Mover

The Vertical Mover can slide vertically or move one square sideways.




Copper General

The Copper General moves one square vertically or diagonally forward.




Side Mover

The Side Mover can slide sideways or move one square vertically.




Iron General

The Iron General moves one square orthogonally backward or diagonally forward.




Vertical Soldier

The Vertical Soldier can slide directly forward or move one square directly backward. In addition, it can slide one or two squares sideways.




Dog

The Dog moves one square orthogonally forward or diagonally backward.




Multi General

The Multi General slides orthogonally forward or diagonally backward.




Pawn

The Pawn moves as it does in Shogi - one square orthogonally forward.




Tokin

The Tokin moves as it does in Shogi - it moves one square orthogonally or diagonally forward.

Rules

Deciding who moves first

furigoma (振り駒 piece toss) is used to decide who moves first. One of the players tosses five pawns. If the number of tokins (promoted pawns, と) facing up is higher than unpromoted Pawns (歩), then the player who tossed the pawns plays Gote (後手 White) (that is, getting the second move).

The players may also decide who goes first through a game of chance or a mutual agreement.

Sente (先手 Black) moves first, then players alternate making a move. Making a move is required – skipping a move is illegal, even when having to move is detrimental. Play continues until a player's last remaining royal piece is captured, a player resigns, or a draw is declared.

Skipping a turn

The Fire Demon, Vice General, Dragon Master, Horse Master, Lion Hawk, Free Eagle, Lion, Soaring Eagle, and Horned Falcon have the ability to skip a turn if at least one adjacent square is empty. (The Free Eagle can only do this on the squares diagonally adjacent to it, the Horned Falcon can only do this on the square directly in front of it, and the Soaring Eagle can only do this on either of the two squares diagonally in front of it.) However, there are two restrictions when doing so:

Promoting pieces that skip a turn inside the promotion zone do not have the option of promoting on that turn.

Promotion

A player's promotion zone consists of the furthest five ranks of the board, at the original line of the opponent's pawns and beyond. The zone is typically delineated on the game board by two inscribed dots. When a piece is moved, if part of the piece's path lies within the promotion zone (that is, if the piece moves into, out of, or wholly within the zone, but not if it skips a turn or passes in and out of the zone without starting or ending its move within it), then the player has the option to promote the piece at the end of the turn. Promotion is indicated by turning the piece over after it moves, revealing the character of the promoted piece. The pieces promote as follows:

  • Water Buffalo -> Fire Demon
  • Side Soldier -> Water Buffalo
  • Iron General -> Vertical Soldier
  • Lion -> Lion Hawk
  • Kirin -> Lion
  • Queen -> Free Eagle
  • Phoenix -> Queen
  • Violent Dragon -> Dragon Master
  • Rook General -> Great General
  • Soaring Eagle -> Rook General
  • Dragon King -> Soaring Eagle
  • Rook -> Dragon King
  • Gold General -> Rook
  • Pawn -> Tokin
  • Dog -> Multi-General
  • Reverse Chariot -> Whale
  • Violent Horse -> Horse Master
  • Bishop General -> Vice General
  • Horned Falcon -> Bishop General
  • Dragon Horse -> Horned Falcon
  • Bishop -> Dragon Horse
  • Ferocious Leopard -> Bishop
  • Chariot Soldier -> Heavenly Tertarch
  • Vertical Soldier -> Chariot Soldier
  • Knight -> Side Soldier
  • Vertical Mover -> Flying Ox
  • Silver General -> Vertical Mover
  • Lance -> White Horse
  • Blind Tiger -> Flying Stag
  • Drunk Elephant -> Crown Prince
  • Side Mover -> Free Boar
  • Copper General -> Side Mover

Because promotion doesn't happen until the end of the turn, multi-capturing pieces that promote have a chance to make a double capture before doing so.

The King, Fire Demon, Great General, Vice General, Lion Hawk, and Free Eagle do not promote, nor can already promoted pieces promote further.

Check

When a player’s last remaining royal piece (a King or Prince) is under immediate attack by at least one enemy piece, it is in check. A player who's last remaining royal is in check is not required to remove the the check, but this is almost always the best option, since a player who has no more royal pieces on the board loses the game. If a player has both a King and a Prince in play, that player may sacrifice one of them. A check can be removed in one of three ways, depending on the situation:

The King and Prince need not move out of check, and can even move into check, though this is almost always a blunder. If it is not possible for a player who only has a King or a Prince to get out of check, that piece is checkmated and the game is effectively over.

Illegal Move

A player who makes an illegal move loses immediately. Illegal moves include:

This rule may be relaxed in casual games, where a player can take back the illegal move and make a legal move.

End of the game

A player who captures the opponent's last remaining royal piece (a King or Prince) wins the game.

Checkmate and Stalemate

If a player’s last remaining royal piece is placed in check and there is no legal move that will resolve the check, the checking move is also checkmate, and effectively wins the game.

If a player’s last remaining royal piece is not in check but that player has no legal moves, the game is a stalemate. Stalemate, like checkmate, leads to a win for the stalemating player.

Resignation

At any point in the game, a player may resign and their opponent wins the game.

Draw

There are only two ways for a draw to occur - 千日手 sennichite (repetition) and impasse.

Repetition Draw 千日手 sennichite - If the same game position occurs four times with the same player to move, then the game ends in a draw, as long as the positions are not due to turn-skipping violations.

Impasse – If neither player can hope to force checkmate or stalemate on the other player’s last remaining royal piece or gain any further material through a series of legal moves, the players may agree to a draw.

Notes

Differences from Tenjiku Shogi

Suzumu Shogi has nine main differences from its predecessor, Tenjiku Shogi:

  1. The rule set is complete, with no lacunae whatsoever.
  2. The initial setup is different.
  3. Suzumu Shogi has the Violent Dragon and Violent Horse in addition to the pieces from Tenjiku Shogi.
  4. A few pieces have different moves from their Tenjiku Shogi counterparts
    1. Fire Demon's burning ability is much weaker (but still quite terrifying).
      • Only has an active burning ability (activates after stopping at destination), and can only burn one adjacent enemy piece per move.
      • Burning ability is optional.
      • Can also capture a piece on an adjacent square without moving.
    2. Fire Demon can slide in all 8 directions, rather than just along diagonals and ranks (or files) to compensate for the reduced burning ability.
    3. Jumping Generals can only jump up to two pieces when taking, but they have no restrictions on what they can jump over or capture.
    4. Lance moves like the Liberated Horse from Wa Shogi.
    5. Knight moves like it does in Chess.
    6. Iron General moves like the Tile General found in larger Shogi variants (i.e. Maka Dai Dai Shogi).
  5. Promotion rule is the same as in standard Shogi, but you cannot promote by skipping a turn.
  6. Cannot skip 2 consecutive turns.
  7. Cannot skip a turn when the immediately preceding turn was skipped by the opponent.
  8. Fourfold repetition is a draw.
  9. Impasse rule allows draws if neither player can hope to make any progress.

Similar Games

Computer Play

You can Play Suzumu Shogi online with Game Courier.



This 'user submitted' page is a collaboration between the posting user and the Chess Variant Pages. Registered contributors to the Chess Variant Pages have the ability to post their own works, subject to review and editing by the Chess Variant Pages Editorial Staff.


By Adam DeWitt.

Last revised by Adam DeWitt.


Web page created: 2019-01-26. Web page last updated: 2021-10-02