Various Puzzles/Games online

Mainly Logic Puzzles and Cryptograms

Sudokos:

http://www.suduko.org.uk/ can help you solve a suduko.

http://uk.games.yahoo.com/sudoku/index.html from yahoo UK

http://www.counton.org/sudoku/

http://www.computeractive.co.uk/spotlight/sudukoindex

http://play.websudoku.com/

Kakuros:

http://www.kakuro.net/

http://www.kakuropuzzle.com/

http://www.divingforbananas.com/kakuro/ scroll down a bit to find daily puzzles

http://www.kakurolive.com/

http://www.dokakuro.com/

http://www.kakuro.info/

http://kakuro.cc/

Other types of puzzles:

http://www.allstarpuzzles.com/spotdiff/index.html spot the differences

http://www.allstarpuzzles.com/ various puzzles-including logic puzzles and cryptograms

http://www.puzzles.com/Projects/MiniContests.htm Mini Contests

http://www.puzzles.com/Projects/LogicProblems.html logic puzzles

http://www.logicmazes.com/ logic mazes

http://www.logicmazes.com/links.html maze and puzzle links

http://www.princeton.edu/~mathclub/puzzles.html puzzles and games

http://www.eduplace.com/math/brain/ http://www.syvum.com/teasers/

http://www.members.aol.com/ukhostmths/mathson/mathson.htm

http://www.coolquiz.com/Puzzles/ http://wpc.puzzles.com/history/index.htm

http://www.bbc.co.uk/education/mathsfile/gameswheel.html

http://www.10ticks.co.uk/s_codebreaker.asp http://www.10ticks.co.uk/puzzle.asp

http://www.10ticks.co.uk/maze2.asp http://www.10ticks.co.uk/games.asp

http://www.10ticks.co.uk/games2.asp

http://www.c3.lanl.gov/mega-math/workbk/logic/loplay.html

http://matti.usu.edu/nlvm/nav/vlibrary.html not actually games, but virtual manipulatives grouped by topic and grade level

http://illuminations.nctm.org/mathlets/codes/index.html

http://illuminations.nctm.org/mathlets/fraction/index.html

http://illuminations.nctm.org/mathlets/pooltable/index.html

http://illuminations.nctm.org/mathlets/shapesorter/index.html

http://illuminations.nctm.org/mathlets/hanoi/index.html

http://standards.nctm.org/document/eexamples/chap7/7.3/index.htm

http://www.conceptispuzzles.com/puzzlecenter/index.htm http://www.conceptispuzzles.com/links/logicpuzzles.asp

http://www.contestcen.com/index04.htm http://www.thakur.demon.nl/index_1.html

http://www.norfacad.pvt.k12.va.us/puzzles/sallys.htm

http://www.enchantedlearning.com/math/logic/puzzles/

http://www.mysterymaster.com/puzzles.html http://www.puzz.com/

http://school.discovery.com/brainboosters/

http://www.greenleecds.com/mathdownloads.html#0 some logic tricks, math magic and other things.

http://www.braingle.com/Math.html math brain teasers--73 pages of them with 15 per page.

http://www.eggplant.org/tools/links/puzzles.html links to various puzzle sites.

http://www.fooledya.com/moss/papers/mathfun.html teaching magic in a math class.