How Chess Puzzles Work

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  • Encyclopædia Britannica. "Chess." Encyclopædia Britannica Online Academic Edition. Encyclopædia Britannica. 2011. (Aug. 18, 2011)
  • Fisher, Wendi. "Educational Value of Chess." Johns Hopkins University School of Education. (Aug. 18, 2011)
  • McDowell, Michael. "Retrograde Analysis." The British Chess Problem Society. (Aug. 18, 2011)
  • Smith, James P, Bob N. Cage. "The Effects of Chess Instruction on the Mathematics Achievement of Southern, Rural, Black Secondary Students." Research in the Schools, Vol. 7, No. 1. Spring 2000. Education Resources Information Center. (Aug. 18, 2011)
  • Shenk, David. "The Immortal Game." Random House Digital, Inc. 2007. (Aug. 18, 2011)
  • Stephenson, B.D. "Chess Problems: An Introduction." The British Chess Problem Society. (Aug. 18, 2011)