This type of puzzle is the most popular one in the Anglo-American puzzle world. However it is not clear whether the reason for this, is that they are really popular or the crossword puzzle programmes are cheap.

Horizontal 1  Cry, 3  And the rest (abbrev), 6  Hindu ascetic, 9  Selfish man, 12 Part of the mouth, 14 Facing the same direction, 15 Uproarious, 16 Negative adverb, 17 Blemish, 18 Hog, 19 Belonging to us, 20 Shameful depravity, 23 Learner, 25 Type of Italian wine, 27 Most recent, 29 Male chicken, 31 What is breathed, 34 No score, 35 A wasp, eg, 38 Auction item, 39 Sing like a bird, 42 Through, 43 Leatherworking tool, 44 Indian state, 45 Sound of disapproval, 47 Chimney (Scot.), 49 Without emotion, 53 «No» vote, 55 Tinned meat, 56 The monstrous loch?, 57 Taxi or sedan, 58 Garrisoned, 61 Headwear, 63 Pop group (1,2), 64 Beer, 66 Large primate, 68 Frozen sweet, 69 Series of prayers, 71 Head cover, 72 Dreaming state, 73 Understand, 74 Definite article, 77 Metal corrosion, 78 Thick screw, 81 Temporary delay, 82 Put in the shade, 83 Showing good manners, 87 Born as, 89 Before (poetic), 91 Canning material, 93 Hit lightly, 94 North African republic, 95 Expert in elemental mixtures, 96 Cure resort, 97 Distress signal (1,1,1), 98 Reduce prices greatly, 99 RAF medal (1,1,1), 100  Elderly Vertical 1  Singer, Frank ..., 2  Nocturnal mammal, 3  Regal fur, 4  Brewed beverage, 5  Business group, 6  Heavenly body, 7  Salvador ..., Spanish artist, 8  Official language of Pakistan, 9  Russian coin, 10 Maori clan, 11 Child‘s four-legged friend, 12 Famous orchestra (1,1,1), 13 Fragmentary, 21 Knee-cap, 22 Roman historian, 24 Signal receiver, 26 Bingo’s «top of the shop», 28 Skill, knack, 30 Crow noise, 32 Novel, 33 Swing to and ..., 36 Pete ... , tennis star, 37 Plant that grows up a wall, 40 Meeting schedules, 41 Irish mythological wailer, 42 Genus of the wasp, 46 Aromatic herb, 48 Uncle Sam?, 50 Expected golf score, 51 The briny, 52 Printing fluid, 54 ... Hartford, 1960s footballer, 57 Loving stroke, 59 Earthquake scale, 60 Able to do, 62 Excellent, 65 Drink like a cat, 67 Layer, 70 Not me, 72 The whole amount, 73 Slender cords, 75 Selected by vote, 76 Broadens, 77 Alcove, 79 Tried out, 80 Specialised medical centre, 84 Arrow poison tree, 85 Brass instrument, 86 Cry of pain, 88 Seventh Greek letter, 90 Brazilian resort, 92 International bank, 93 Turn the page (1,1,1)

There are 8 variants:

• Clues (see above)
• Scrambled
• The letters of a word without N - Z
• The letters of a word without A - M
• Trice as Nice
• The letters of a word without vowels
• The letters of a word without consonants
• Calculated (this variant gives letters a value - A=1 ... Z=26 -, and the clues are the result of multiplication of all values of the word) - see Logicals
   

Crossword Puzzles are more difficult when the horizontal and vertical clues are mixed together in the list (see below).

Crossword Puzzles are even more difficult when the words in the grid may run from left to right or right to left, from top to bottom or from bottom to top (see below).

1. Raven family member,  2. Miniature bulldogs - Stinging insect, 3. Former Japanese coin, 4. German car maker (1,1,1), 5. Circuit of a track - Toot, 6. “OT” high priest, 7. Babies shirt protectors,  8. Go away!, 9. EC currency unit, 10. Sleeve, 11. Expensive,  12. Shape of a spring,  13. Australian river branch,  14. Oil cartel (1,1,1,1), 15. SE Asia republic, capital Vientiane, 16. Type of lettuce,  17. Unburden, 18. Collection, 19. Foolish person, 20. Male ox - Military person,  21. News snippets,  22. Recumbent,  23. Condemns to failure,  24. Pretend to have or feel, 25. Awkward,  26. Frozen dessert, 27. Shooting star,  28. Sicilian volcano, 29. Large African monkey,  30. Lubricates, 31. Assimilates info, 32. Supplements, 33. Royal princess - Sum up,  34. Trickle,  35. Champion - Wait, 36. Swedish pop group,  37. State of being in need of fixing, 38. Muhammad ..., ex-boxer, 39. Yes,  40. Prickly seed case, 41. Poorly, 42. Big cat,  43. Operate,  44. Main branch of a tree, 45. Very young child, 46. Tattle

The integration of numbers, after a clue in brackets indicating the number of letters, is optional (see below).

Horizontal 1. Wane (3), 4. Proposed law (4), 7. Fibber (4), 9. Drudge (4), 10. Delete (5), 13. Chinese language (8), 14. Bird charity (1,1,1,1), 16. Stepped on (4), 19. Apron (8), 22. Overturn (liquid) (5), 23. Dictator, Idi ... (4), 24. Official language of Pakistan (4), 25. Hollow place (4), 26. Psychic powers (1,1,1) Vertical 2. Airship (5), 3. Sound produced by both lips (8), 4. Reared (4), 5. Play, “King ...” (4), 6. Arab prince (4), 8. Mountain peak in Scotland (3), 11. Fashion industry (3-5), 12. Prefix meaning “China” (4), 15. Slight mistake (4), 17. Brother of Romulus (5), 18. Bodywork damage (4), 19. Greek letter (3), 20. Asian palm (4), 21. Duct for smoke (4)

This type of puzzle is available in many different sizes, symmetries, shapes and designs.

Across 4  French wire service (1,1,1), 7  Swear (5), 10 Flower on long spikes (5), 13 ... Aykroyd, US actor (3), 18 Country setting (8), 20 Board game (4), 22 ... Lanka, modern Ceylon (3), 24 Smallest part of an element (4), 26 Person being tested (8), 27 Savoury dish (4), 28 Compliment (7), 31 Jason’s ship (4), 32 Elderly (3), 34 Fisherman (6), 35 Malignity (5), 36 Utilise again (5), 37 Very keen (6), 39 Sum up (3), 41 Shrine of prophecy (6), 43 Capital of Vietnam (5), 44 Any letter other than a vowel (9), 50 Rounded swelling (5), 51 Figure in stone (6), 52 Discard (4), 53 Short visit (4), 54 Sharp blow (3), 56 Small openings (8), 60 Resusal to obey (9), 64 Jubilant (8), 69 Hawaiian flower garland (3), 71 Past, gone (3), 72 ... Garfunkel, musician (3), 73 Faint (3), 75 Imperil (8), 78 Post surgery attention (9), 79 Farthest behind (8), 81 Delirium tremens (1,1,1), 83 Nocturnal bird (3), 84 Brazilian resort (3), 85 Potato (4), 87 Advance payment (7), 90 Illicit (7), 93 Thieves (7), 96 Theatrical piece (4), 99 Muscle (7), 101  Jog (4), 103  Pre-natal (9), 105  Become roused from sleep (4), 106  Envelop (7), 108  “Ben ...”, epic film (3), 109  River of SE Devon (3), 110  Break into small pieces (12), 113  Male title (3), 114  Seventh Greek letter (3), 115  Act of delivering to everyone (12), 118  Garden plant (5), 119  Established profitable stock (4-4), 123  Porridge (7), 125  Breed of cat (7), 127  Poor imitation (8), 131  Small piece (3), 132  Perfume, ... de Cologne (3), 133  Primitive (8), 136  Frenzied (8), 139  Absurd (8), 142  Adroitness (8), 146  Move (tail, eg.) to and fro (3), 148  Those who purchase services (9), 151  Notebook for recording sales (7), 152  One-humped camel (9), 155  Hire out (3), 157  ... Brynner, actor (3), 158  Electrically charged particle (3), 159  Have a meal (3), 160  Natural, crude (3), 161  Fruit with many seeds (3), 163  Superfluous (9), 165  Refuse out of contempt (7), 166  Ancient amphitheater (9), 168  “over” poetically (3), 172  Undo, loosen (8), 175  Exciting story (8), 177  To give via a will (8), 180  Likeable, causing delight (8), 183  Female reindeer (3), 185  Egg drink (3), 186  Hurdle (8), 191  Greek goddess (7), 194  Withstands (7), 196  Refuse to endorse a candidate (8), 200  Gum (5), 201  Degrades (12), 203  Called before marriage (3), 204  Buddy (3), 205  Germkilling product (12), 207  Little child (3), 208  Frozen dessert (3), 209  Renovated (7), 211  Like a decorative fabric (4), 213  Soldier‘s drill position (9), 214  Large extinct bird (4), 216  Antiquated (7), 217  Shock (4), 218  All-inclusive (7), 221  Backslide (7), 223  People-powered moped (7), 225  Karl ..., communist thinker (4), 227  Ventilate (3), 229  Secret agent (3), 231  Argument in favour (3), 233  Dedicated to working hard (8), 236  TNT, eg (9), 239  Spoken strongly (8), 242  Little devil (3), 244  Trouble in body (3), 245  Crimson (3), 246  Cloth surface (3), 248  Hasten (8), 252  Intolerant (9), 257  Buying and selling of goods (8), 260  Long period of time (3), 262  Sign of office (4), 263  Meditation routine (4), 264  Chinese fruit (6), 266  Social rank (5), 268  Bribe (9), 272  South African group (5), 274  Meddle (6), 276  Jewel (3), 278  Award (6), 280  Oak nut (5), 283  Find out (5), 286  Cheat on small matters (6), 288  Wicked (3), 290  Brief calm (4), 292  Used to pave roads (7), 295  Body of industrial countries (1,1,1,1), 297  Reply (8), 298  Official language of Pakistan (4), 299  Army section (1,1,1), 300  Eye complaint (4), 301  Rebuke (8), 302  Mad Cow Disease (1,1,1), 303  Level odds (5), 304  Lift by force (5), 305  Insect killer (1,1,1) Down 1  Thick, frizzy hair (coll) (4), 2  ... Astaire, dancer (4), 3  Profit (4), 5  Former British coin (6), 6  Afghanistan’s coinage (3), 7  Chicken compound (4), 8  Spellbound (4), 9  European space centre (1,1,1), 10 Jar cover (3), 11 ... Sampras, tennis star (4), 12 Irish town (4), 13 Four-legged pet (3), 14 With no ethical standards (6), 15 Foremost (4), 16 Irish singer (4), 17 Rip (4), 19 Swimming mammal (7), 21 Send home (7), 23 Rene ..., American film star (5), 25 Shudder (7), 26 Serious (7), 29 Not fat (4), 30 “... La Douce”, film (4), 33 Immature insect (5), 34 The whole number (3), 38 Obtain (3), 40 Expression of annoyance (5), 42 Blunder (3), 44 Breakfast in a bowl (6), 45 Type of poem (3), 46 Glimpse (3), 47 Score of zero (3), 48 Army sergeant (1,1,1), 49 Large oil-carrying ship (6), 51 Solar body (3), 54 Unit of radiation (3), 55 Actress, ... Ferris (3), 56 Mixed sex school (2,2), 57 Direct attention to (7), 58 Bolt fastener (3), 59 ... out, use sparingly (3), 61 Flying mammal (3), 62 Immense (5), 63 Lyricist, ... Gershwin (3), 65 Roman numeral for 16 (3), 66 Conducted (3), 67 Leader of a new faith (7), 68 Goodbye (2,2), 69 Company letters (3), 70 “... Rainin’ Men”, song (3), 74 Unbiased (9), 76 Heating fuel (3), 77 Decompose (3), 79 Fireplace ledge (3), 80 Round Indian bread (3), 82 Convey, carry (9), 86 Gradual loss of strength (7), 88 River mammal (5), 89 Wedding vow (1,2), 91 Word-for-word (7), 92 Deer horns (7), 94 Expresses surprise (3), 95 Lived (5), 96 Paint-mixing board (7), 97 Sagacious (3-6), 98 Room to pass (9), 100  Height of a note (5), 102  Act of stealing (5), 104  Chatter casually (6), 105  Chunk (5), 107  Ancient south Egypt region (5), 111  Aperture (3), 112  Stop happening (5), 116  Thieve (5), 117  Wheel furrow (3), 120  Utilising (5), 121  Communist, ... Guevara (3), 122  “Princess ...”, opera (3), 124  Dined (3), 126  Large area of salt water (3), 128  Kind of whisky (3), 129  Brewing vessel (3), 130  Odour (5), 133  Clawed foot (3), 134  With great force (7), 135  French article (3), 137  Sailor (7), 138  Excessive desire for wealth (7), 140  Fret (7), 141  Collections of spoken texts (7), 142  Papa (3), 143  Part of a walking stick (7), 144  Become firm (3), 145  Tolerate (5), 147  Boxer, Muhammad ... (3), 148  Worthless hound (3), 149  Centre (3), 150  Drunkard (3), 152  French nobleman (3), 153  Former Chinese leader (3), 154  Tropical root vegetable (3), 156  Adam and ... (3), 161  Viral disease (3), 162  Natural talents (5), 164  Hot-water dispenser (3), 167  Soak (3), 168  Oxygen compound (5), 169  Floor mat (3), 170  Uncompounded (9), 171  Italian dictator (9), 173  Health spring (3), 174  Long fish (3), 175  Salute with drink (5), 176  Of the lady (3), 178  High explosive (1,1,1), 179  Hotel-keepers (5), 181  Washing liquid (3), 182  A gorilla is one (3), 184  Reduce (6), 187  Yeoman of the guard (9), 188  In that context (7), 189  Punishable offence (5), 190  Listening organ (3), 192  Bad-tempered (5), 193  Ghost (7), 194  Overhauls (7), 195  Joined with (5), 196  Continuing loud noise (3), 197  Lustre (5), 198  Soft metallic element (7), 199  Question asked for fun (9), 202  Austrian psychologist, Alfred ... (5), 206  Sarcastic humour (5), 210  Evolve (7), 212  Mountain pass (3), 215  French word for “yes” (3), 216  Top of the top (3,4), 219  Beer (3), 220  Currency of Latvia (3), 222  In the rigging (5), 223  See you later (3), 224  Hat worn by a schoolboy (3), 226  Not in use (4), 228  Historic artefacts (6), 229  Zone (6), 230  Land area (4), 231  Play on words (3), 232  UK Pensioner (1,1,1), 234  Supreme being (3), 235  Negative word (3), 237  Verve (3), 238  Eisenhower’s nickname (3), 240  Cow’s low (3), 241  Edge of garment (3), 242  Fish of the carp family (3), 243  Biro (3), 247  Sprightly (5), 249  Roman numeral for 21 (3), 250  Fugitive (7), 251  Green precious stone (7), 253  Cat’s whining cry (3), 254  Reverence (3), 255  Great anger (3), 256  ... Bevan, NHS creator (3), 257  Prime minister‘s team (7), 258  Republic in South America (7), 259  Army bed (3), 261  Greek letter (5), 265  Stolen (slang) (3), 267  Record player needle (6), 269  German “one” (4), 270  Fitting too closely (5), 271  Void, invalid (4), 273  Gestured assent (6), 275  Length of existence (3), 276  Bloodthirsty (4), 277  Contemplate (4), 279  Weakest animal of a litter (4), 281  Truthrevealing fact (4), 282  Great anger (4), 284  Sicilian volcano (4), 285  Thorny flower (4), 287  Scandinavian (4), 288  Naughty child (4), 289  Indian lentil soup (4), 291  Midge ..., rock star (3), 293  Movement in ballet (3), 294  Fire dust (3), 296  ... Charisse, dancing star (3)