Contents of Volume 4,

**Journal of Recreational Mathematics,**1971# Number 1

“Solid Knight’s Tours,” by Ian Stewart

“Domino and Superdomino Recreations – Part I,” by Wade E.
Philpott

“Repunit Riddles,” by Samuel Yates

“Computer Stamps From the Netherlands,” by J. H. van Lint

“The ’12 + 1’ False Coin Problem – Comment,” by Robert A.
McIvor

“The False Coin Problem Extended,” by Ted Roth

“The False Coin Problem Dissected and Decently Laid to
Rest,” by V. G. Hobbes

“Extension of the Chain-Cutting Problem,” by Donald R.
Byrkit and William M. Waters, Jr.

“Some Investigations Into the Game of Sim,” by A. P. DeLoach

“Fifth Order Concentric Magic Squares,” by Charles W. Trigg

“More About P = N^2 + M^3,” by Terrell Trotter, Jr.

“The Number of Possible Games of Chess,” by Ian Stewart

“Check Your Check Digit,” by R. W. Gesell

“Polyhedron Mousetraps,” by Doulas A. Engel

“A General Reversal-Subtraction,” by Charles W. Trigg

“Labelling the 13-Point Geometry,” by J. C. Ault

“Single Square Sums,” by J. A. H. Hunter

“Single Square Differences,” by J. A. H. Hunter

Problems and Conjectures

Errata

Solutions to Problems and Conjectures

Late Solutions

Answers to Repunit Riddles

# Number 2

“Domino and Superdomino Recreations – Part 2,” by Wade E.
Philpott

“Wilson’s Theorem,” by M. H. Greenblatt

“A Three Square Geometry Problem,” by Charles W. Trigg

“A Consecutive-Digit Prime,” by Joseph S. Madachy

“Number Please,” by Maxey Brooke

“Double Square Sums,” by J. A. H. Hunter

“Double Square Differences,” by J. A. H. Hunter

“Schlegel Diagrams,” by Ernest R. Ranucci

“Some Relatives of the Integer 1089,” by Leslie E. Card

“The Question of Allomorphs,” by John McClellan

“Random Hops on Polyhedral Edges and Other Networks,” by R.
Robinson Rowe

“A Fallacy in Limits,” by Prem N. Bajaj

Problems and Conjectures

“More Repunit Riddles,” by Samuel Yates

“Integer Oddities,” by J. A. H. Hunter

Solutions to Problems and Conjectures

Late Solutions

Errata

Letters to the Editor

“A Good Approximation to the Trisection of an Angle,” by
Michael A. Budin

“Answers to More Repunit Riddles,” by Samuel Yates

# Number 3

“Dots and Triangles,” by Joseph Viggiano

“Cutting String and Arranging Counters,” by Brian R. Barwell

“Special Palindromic Primes,” by Charles W. Trigg

“A Doubly Magic Square with Remarkable Subsidiaries,” by
Charles W. Trigg

“The Problem of the Hidden Faces,” by John McClellan

“A New Solid Pentomino Problem,” by C. J. Bouwkamp

“The Ending Two-Digit Pattern of 2^(p-1)(2^p – 1),” by E. V.
Krishnamurthy

“Triple Square Sums,” by J. A. H.Hunter

“Triple Square Differences,” by J. A. H. Hunter

“Carroll’s Paper Folding Pillow-Problem,” by R. Robinson
Rowe

“An N-Dimensional Binary Coloring Problem,” by Douglas A.
Engel

“Calculator Art Contest,” by A. B. Sperry and Joseph S.
Madachy

“Children’s Games as a Means of Memory Training in Primitive
and Near-Primitive Societies,” by Paul G. Brewster

“The Collaboration Graph of Mathematicians and a Conjecture
of Erdős,” by Frank Harary

Rate Your Wits

Problems and Conjectures

Solutions to Problems and Conjectures

Solutions to Rate Your Wits

# Number 4

“Domino and Superdomino Recreations – Part 3,” by Wade E.
Philpott

“Commutation,” by M. H. Greenblatt

“Double Trouble,” by Benjamin L. Schwartz

“Curious Factorizations,” by J. A. H. Hunter

“Edge-Magic and Edge-Antimagic Tetrahedrons,” by Charles W.
Trigg

“A Note on the Nature of the Infinite,” by Peter Hugh
DeVries

“Mathematics and the Game of Checkers,” by John W. Goppelt

“Roadtripping a Chessboard,” by R. Robinson Rowe

“Even and Odd Period Lengths,” by Samuel Yates

“On the Distribution of Primes Congrudent to Modulo 40,” by
R. V. Krishnamurthy

“A Low Density of Primes,” by Daniel Shanks

“The 100 Problem Revisited,” by Robert L. Patton, Jr.

Problems and
Conjectures

Alphametics

Solutions to Problems and Conjectures

Late Solutions

“Repunit Riddles – Set 3,” by Samuel Yates

Book Review

Letters to the Editor

Errata

“Answers to Repunit Riddles – Set 3,” by Samuel Yates

## No comments:

## Post a Comment