Overview

Breakthrough is an abstract strategy board game for two players invented by Dan Troyka in 2000. It won the 2001 8x8 Game Design Competition. Players each control 16 pieces on an 8x8 board, racing to be the first to move a piece to the opponent’s home row. Pieces can only move forward, making draws impossible.

Components

• 1 standard 8x8 game board (chess/checkers board)
• 16 black pieces
• 16 white pieces

Setup

1. Each player takes 16 pieces of one color.
2. Place all 16 pieces on the first two rows of your side of the board, filling every square.
3. Black (or the designated first player) takes the first turn.

Turn Structure

Players alternate turns. On each turn, a player must move exactly one of their pieces. If a player cannot move (all pieces blocked), that player loses.

Actions

Move Forward:

• A piece may move one space straight forward (toward the opponent’s home row) if the target square is empty.
• A piece may move one space diagonally forward if the target square is empty.

Capture:

• A piece may move one space diagonally forward into a square occupied by an opponent’s piece, capturing and removing that piece from the board.
• Captures are only possible diagonally forward — a piece cannot capture by moving straight forward.
• Capturing is not compulsory.
• A player cannot capture their own pieces.

Restrictions:

• Pieces may never move backward or sideways.
• Once a piece is placed, it can only move forward.

Scoring / Victory Conditions

The first player to move any one of their pieces to the opponent’s home row (the row farthest from the player) wins the game immediately.

A draw is impossible because pieces can only move forward and/or be captured — the game must eventually end.

Special Rules & Edge Cases

• No Stalemate: If a player has no legal moves on their turn, that player loses. This differs from chess where stalemate is a draw.
• Original Board Size: The game was originally designed for a 7x7 board but is most commonly played on an 8x8 board.
• No Mandatory Capture: Unlike checkers, players are never forced to capture even when a capture is available.
• Multiple Pieces on Home Row: The game ends immediately when the first piece reaches the home row; there is no need to get multiple pieces across.

Player Reference

Action	Direction	Condition
Move forward	Straight ahead	Target square must be empty
Move diagonally	Diagonally forward	Target square must be empty
Capture	Diagonally forward only	Target square has enemy piece

Setup: 16 pieces per player, filling first 2 rows Win condition: Reach opponent’s back row Board: 8x8 (standard chess/checkers board)