10
. . 1 5 2 6 7 8 . . 
. 1 5 2 . . 6 7 8 . 
1 5 2 . . . . 6 7 8 
5 2 . . . . . . 6 7 
2 . . . . . . . . 6 
4 10 . . . . . . 3 9 
. 4 10 . . . . 3 9 . 
. . 4 10 . . 3 9 . . 
. . . 4 10 3 9 . . . 
. . . . 4 9 . . . .
# 
# Problem from http://www.cs.cornell.edu/gomes/QUASIdemo.html
# (n = 10)
# Pattern #3. 
# Coding:
#    dark red   = 1
#    light blue = 2 
#    dark blue  = 3 
#    light red  = 4
#    brown      = 5
#    green      = 6
#    pink       = 7
#    grey       = 8
#    black      = 9
#    yellow     = 10    
# There are 40944 solutions for this pattern.
#
#
# Copyright 2010 Hakan Kjellerstrand hakank@bonetmail.com
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.