Tapa

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Rules[edit]

Tapa Example.png Tapa Example Solution.png

Shade some empty cells black; cells with numbers cannot be shaded. All black cells connect along edges to create a single connected region. (It is permissible for the region to touch itself at a corner, but touching at a corner does not connect the region.) No 2×2 group of squares can be entirely shaded black.

Numbers in a cell indicate the lengths of contiguous black cell groups along the "ring" of (up to) 8 cells touching that cell. (If there is more than one number in a cell, then there must be at least one white (unshaded) cell between the black cell groups.) The numbers are given in no particular order. As a special case, if the number given in a cell is a zero (0), it means that none of the cells around that cell may be shaded black.

(Rules and example from PGP IB)

Rule variations[edit]

  • Some puzzles feature question marks (?) that stand for a non-zero number.

History of the puzzle[edit]

Invented by Serkan Yürekli (Turkey). First appeared on Internet Puzzle Solvers' Test 2007 as "T-Paint".[1] The name Tapa was first given in 1st OAPC (2009)[2] from contraction of "Turkish Art Paint."

Variants[edit]

See List of Tapa variants.

Appearances in the past WPCs[edit]

Listed here are appearances of classic to almost-classic Tapa puzzles. For variants, see list of Tapa variants#Appearances in the past WPCs.

References[edit]