Curious Cheetah
ABC Kombi
Background
The origin of this puzzle is not known.
Puzzle and Goal
An unsolved puzzle consists of a square grid. To the left and top are numbers representing counts of each letter in each rank.
The goal is to place the available letters in the grid to satisfy the clues.
Rules
The solved grid must satisfy the following conditions:
Orthogonally adjacent cells may not contain the same letter.
Other Names
ABCD Rätsel