- Ones, Numbers composed only of, [18], [75], [198].
- Opposition in Chess, [224].
- Orchards, The Fifteen, [143], [241].
- Ovid's Game, [156], [248].
- Oxen, The Farmer's, [157], [248].
- Ozanam's Recreations, [246].
- Packing Puzzles, Measuring, Weighing, and. See [Measuring].
- Palindromes, [17].
- Pardoner's Puzzle, The, [25], [164].
- Parental Command, A, [28].
- Park, Mystery of Ravensdene, [105], [211].
- Parson's Puzzle, The, [47], [177].
- Party, The Squire's Christmas Puzzle, [86], [205].
- Pellian Equation, [197].
- Pennies, The Eleven, [88], [206].
- Phials, The Two, [42].
- Photograph, The Ambiguous, [94], [210].
- Pie and the Pasty, The, [36].
- Pilgrimages, The Fifteen, [25].
- Pilgrims' Manner of Riding, [34].
- Pilgrims The Riddle of the, [70], [194].
- Pillar, The Carved Wooden, [31].
- Plato and the Nines, [154], [247].
- Ploughman's Puzzle, The, [43], [175].
- Plumber, The Perplexed, [144], [241].
- Plum Puddings, Tasting the, [90], [207].
- Points and Lines Problems, [43], [116], [133].
- Porkers, The Four, [138], [237].
- Postage Stamps Puzzle, The, [112], [214].
- Primrose Puzzle, The, [136], [235].
- Princes, The Four, [153], [246].
- Prioress, The Puzzle of the, [41], [173].
- Professor's Puzzles, The, [110], [214].
- Puzzle Club, Adventures of the, [94], [210].
- Puzzles, How to solve, [18].
- Puzzles, How they are made, [14].
- Puzzles, Sophistical, [15].
- Puzzles, The exact conditions of, [18].
- Puzzles, The mysterious charm of, [12].
- Puzzles, The nature of, [11].
- Puzzles, The utility of, [13].
- Puzzles, The variety of, [13], [16].
- Puzzles, Unsolved, [20].
- Puzzling Times at Solvamhall Castle, [58], [184].
- Pyramids, Triangular, [163].
- Railway Puzzle, [134].
- Railway The Tube, [149], [243].
- Railways, The Chinese, [127], [224].
- Ramsgate Sands, On the, [147], [242].
- Rat-catcher's Riddle, The, [56].
- Ravensdene Park, Mystery of, [105], [211].
- Reve's Puzzle, The, [24], [163].
- Ribbon Problem, The, [130], [228].
- Riddles, old, [16].
- Riddlewell, The Merry Monks of, [68], [194].
- River Crossing Problems, [82], [83].
- Robinson Crusoe's Table, [142], [240].
- Romeo and Juliet, [114], [217].
- Romeo's Second Journey, [116], [218].
- Rook's Path, The, [207].
- Rope, The Mysterious, [79], [201].
- Round Table, The, [137], [236].
- Route Problems, Unicursal and. See [Unicursal].
- Sack Wine, The Riddle of the, [72], [196].
- St. Edmondsbury, The Riddle of, [75], [197].
- Sands, On the Ramsgate, [147], [242].
- Sea-Serpent, The Skipper and the, [150], [244].
- Shield, Squares on a, [27].
- Shipman's Puzzle, The, [40], [173].
- Skipper and the Sea-Serpent, The, [150], [244].
- Snail on the Flagstaff, The, [66], [190].
- Snail The Adventurous, [152], [245].
- Snails, The Two, [115], [217].
- Solvamhall Castle, Puzzling Times at, [58], [184].
- Sompnour's and Friar's Dispute, [51], [180].
- Sompnour's Puzzle, The, [38], [172].
- Spherical Surface of Water, [181].
- Spider and the Fly, The, [121], [221].
- Square and Triangle, The, [49].
- Square Field, The, [107].
- Squares, Problem of, [74].
- Square, Three Squares from One, [131], [231].
- Squire's Christmas Puzzle Party, The, [86], [205].
- Squire's Puzzle, The, [45], [176].
- Squire's Yeoman, The Puzzle of the, [31], [168].
- Stamps, Counting Postage, [137].
- Stamps, Magic Squares of, [112].
- Stamps, Puzzle, The Postage, [112], [214].
- Superposition, Problem on, [179].
- Sylvester, [175].
- Table, Robinson Crusoe's, [142], [240].
- Table, The Round, [137], [236].
- Talkhys, [198].
- Tapestry, Cutting the, [30].
- Tapiser's Puzzle, The, [30], [167].
- Teacups, The Three, [87], [205].
- Tea Tins, The Five, [137], [237].
- Thirty-one Game, The, [125], [224].
- Tiled Hearth, The Riddle of the, [71], [195].
- Tilting at the Ring, [59], [185].
- Tour, The English, [134], [233].
- Towns, Visiting the, [134].
- Tramps and the Biscuits, The, [160], [250].
- Treasure, The Buried, [107], [212].
- Trees, The Sixteen Oak, [44].
- Triangle and Square, [49].
- Triangles of Equal Area, [153], [246].
- Triangular numbers, [163].
- Tube Railway, The, [149], [243].
- Weaver's Puzzle, The, [35], [171].
- Weekly Dispatch, [179], [221].
- Weighing, and Packing Puzzles, Measuring. See [Measuring].
- Wife of Bath's Riddles, The, [27], [166].
- Window, The Donjon Keep, [62], [188].
- Wine, Stealing the, [73].
- Wizard's Arithmetic, The, [129], [226].
- Wood Block, Cutting a, [160], [250].
- Wreath on Column, [146], [241].
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