Reversi — Decisions: compare what happens next

Playfield's classic Reversi uses a six-by-six board with four starting centre discs. Violet moves first and alternates with Cream when both have legal moves. A placement must bracket one or more consecutive opposing discs between the new disc and an existing friendly disc in at least one of eight directions. Every bracketed line flips. The interface automatically passes a player with no legal move. The game ends when neither player can move, even with empty squares left; the greater disc count wins and equal counts draw. All discs count equally in this version.

Printing and using this pack

Use Print or Save as PDF. The first page contains instructions, the next four pages contain the tasks, and the remaining pages contain answers. An answer may continue onto another page. Check your print preview before choosing a page range. Print only the challenge pages if you want to keep answers separate.

Write a move and a reason before consulting the key. Rows count from the top and columns from the left. Four in a Row and Reversi diagrams state whose turn it is. The full online comparison includes all legal first moves; the answer sheets include the complete first-move comparison or a checked route.

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