• Move your King to the opposing Kingdom
• Capture your opponent’s King
• Block all legal moves by your opponent

• Move your pieces one square diagonally toward your opponent’s Kingdom
• Capture by leaping one or more of your opponent’s pieces
• Place your pieces in Shield Squares to make them invincible and block your opponent’s advance
• Battalion Commanders can be shielded by any square marked by their Battalion
• The Kakanfo can be shielded by any square marked H
• The Oba can be shielded by any square marked K

• Moving any piece (except the Oba) into your opponent’s Kingdom promotes it to a Prime (★)
• The Oba cannot be promoted — reaching the opponent’s Kingdom is an immediate win
• Primes can move diagonally and capture diagonally in any direction
• Soldiers who are promoted can be shielded by any Shield Square marked with their Battalion symbol
• When the Kakanfo is promoted, he becomes an x-Prime — shielded by every square on the board

• Gold ring: your currently selected piece.
• Green highlight: where you can legally move.
• Blue pulse: an invincible piece.

Oba is played on a 10×10 checkerboard called a Deciboard. Only the light squares are used — the dark squares are ignored entirely throughout the game.

The row closest to you is your Kingdom. The row at the far end is your opponent’s Kingdom. Everything between is the Battlefield.

Light squares are marked with symbols that identify Shield Squares — strong points where certain pieces become invincible.

1. King Advance: Move the Oba into any square of the opponent’s Kingdom row.
2. King Captured: Jump over and capture the opponent’s Oba.
3. No Legal Moves: Leave your opponent with no legal move on their turn.

Strategic note: An Oba who never leaves his Kingdom cannot be captured — but he also can never win by advance. Victory requires risk.

Each player commands 20 pieces across four ranks.

—— Akin Battalion ————————————

—— Bomani Battalion ——————————

—— Olugbeja Battalion —————————

When a piece lands on its matching Shield Square it becomes invincible — shown by a blue pulsing glow. An invincible piece cannot be jumped by any means. Invincibility ends the moment the piece moves off the square.

An invincible piece surrounded with no legal move is immobilized — cannot be captured, cannot move. It is out of play until surrounding pieces move.

Before promotion: All pieces move forward diagonally only, one square at a time, staying on light squares.

After promotion (Prime): Pieces move diagonally in any direction.

Captures: Jump diagonally over an adjacent opponent piece onto the empty square beyond. Multi-jump chains allowed. Invincible pieces cannot be jumped.

A piece with captures available must use them if you move that piece. You may choose to move a different piece instead.

• Move your King to the opposing Kingdom
• Capture your opponent’s King
• Block all legal moves by your opponent

• Move your pieces one square diagonally or one square straight forward each turn
• Capture by leaping one or more of your opponent’s pieces — diagonally or straight forward
• Light squares carry Shield markings. Dark squares are neutral transit territory — no shield protection
• Diagonal path = stays on light squares, shields available. Straight forward = crosses dark squares, no shields but opens column pressure
• Shield rules for all piece types are identical to Standard Play

• Moving any piece (except the Oba) into your opponent’s Kingdom promotes it to a Prime (★)
• The Oba cannot be promoted — reaching the opponent’s Kingdom is an immediate win
• Primes move in any of 8 directions — all four diagonals plus forward, backward, left, right
• Primes can capture in any of those 8 directions as well
• Promotion shield rules are identical to Standard Play

• Gold ring: your currently selected piece.
• Green highlight: where you can legally move (includes straight forward).
• Blue pulse: an invincible piece.
• Mahogany squares: dark squares — playable but carry no shield value.

Extended Play uses the same 10×10 Deciboard with identical Shield Square markings. The key differences are starting position and movement.

Pieces fill the two rows closest to each player — all squares, light and dark. Six rows of open Battlefield separate the two sides at game start.

Dark squares are playable transit territory. A piece on a dark square has no shield protection and can be attacked from up to 8 directions.

Same three conditions as Standard Play:

1. King Advance: Move the Oba into any square of the opponent’s Kingdom row.
2. King Captured: Jump over and capture the opponent’s Oba.
3. No Legal Moves: Leave your opponent with no legal move on their turn.

Strategic note: The six-row Battlefield creates a genuine deployment phase. How you cross it — shielded diagonally or exposed straight forward — defines your opening strategy.

Each player commands 20 pieces across four ranks. Only movement and starting position change from Standard Play.

—— Akin Battalion ————————————

—— Bomani Battalion ——————————

—— Olugbeja Battalion —————————

Shield rules are identical to Standard Play — with one critical addition.

Dark squares carry no shield value. A piece on a dark square is always unshielded, regardless of type or rank. This is the central strategic tension of Extended Play: diagonal paths offer shield protection; straight forward paths offer column pressure at the cost of invincibility.

Before promotion: Move one square diagonally forward or one square straight forward (3 possible directions from most positions).

After promotion (Prime): Move one square in any of 8 directions — all four diagonals plus forward, backward, left, and right.

Captures: Diagonal jump (same as Standard) or straight forward jump. Prime pieces capture in any of 8 directions. Invincible pieces cannot be jumped. Multi-jump chains allowed.

A piece with captures available must use them if you move that piece. You may choose to move a different piece instead.