योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-16, verse-10

प्रहेलिकाभिराख्यानैस्तथा चाक्षरमुष्टिभिः ।
अष्टापदैर्बहुद्यूतैस्तथा गूढचतुर्थकैः ॥ १० ॥

prahelikābhirākhyānaistathā cākṣaramuṣṭibhiḥ ,
aṣṭāpadairbahudyūtaistathā gūḍhacaturthakaiḥ 10

10. prahelikābhiḥ ākhyānaiḥ tathā ca akṣaramuṣṭibhiḥ
aṣṭāpadaiḥ bahudyūtaiḥ tathā gūḍhacaturthakaiḥ

10. prahelikābhiḥ ākhyānaiḥ ca tathā akṣaramuṣṭibhiḥ
aṣṭāpadaiḥ bahudyūtaiḥ ca tathā gūḍhacaturthakaiḥ

10. By means of riddles, narratives, and letter-sign games; by board games like chess, by many gambling games, and by cryptic quatrains.

Words meanings summery:

• प्रहेलिकाभिः (prahelikābhiḥ) - by riddles, by enigmas

• आख्यानैः (ākhyānaiḥ) - by narratives, by stories, by tales

• तथा (tathā) - and (and, similarly, thus)

• च (ca) - and

• अक्षरमुष्टिभिः (akṣaramuṣṭibhiḥ) - by letter-sign games (by secret letter signs, by hand gestures encoding letters, by letter-fist games)

• अष्टापदैः (aṣṭāpadaiḥ) - by board games like chess (by chess-like games, by board games with eight squares)

• बहुद्यूतैः (bahudyūtaiḥ) - by many gambling games

• तथा (tathā) - and (and, similarly, thus)

• गूढचतुर्थकैः (gūḍhacaturthakaiḥ) - by cryptic quatrains (by cryptic quatrains, by hidden four-lined verses/puzzles)

Words meanings and morphology

प्रहेलिकाभिः (prahelikābhiḥ) - by riddles, by enigmas

(noun)

Instrumental, feminine, plural of prahelikā

prahelikā - riddle, enigma, puzzle

Feminine noun, possibly from root √hel (to jest, disregard) or √hīḍ (to mock) with prefix `pra`

Prefix: pra

Root: hel

आख्यानैः (ākhyānaiḥ) - by narratives, by stories, by tales

(noun)

Instrumental, neuter, plural of ākhyāna

ākhyāna - narrative, tale, story, history

Verbal noun

From root √khyā (to tell, relate) with prefix `ā`

Prefix: ā

Root: khyā (class 2)

तथा (tathā) - and (and, similarly, thus)

(indeclinable)

च (ca) - and

(indeclinable)

अक्षरमुष्टिभिः (akṣaramuṣṭibhiḥ) - by letter-sign games (by secret letter signs, by hand gestures encoding letters, by letter-fist games)

(noun)

Instrumental, feminine, plural of akṣaramuṣṭi

akṣaramuṣṭi - a hand-gesture game involving letters, a secret way of indicating letters with the hand

Compound of `akṣara` (letter) and `muṣṭi` (fist, hand-gesture)

Compound type : Tatpuruṣa (akṣara+muṣṭi)

• akṣara – letter, syllable, imperishable
  noun (neuter)
• muṣṭi – fist, hand, a handful
  noun (feminine)

अष्टापदैः (aṣṭāpadaiḥ) - by board games like chess (by chess-like games, by board games with eight squares)

(noun)

Instrumental, neuter, plural of aṣṭāpada

aṣṭāpada - (lit. 'eight-footed') a type of board game, often equated with chess or similar 8x8 grid games

Compound of `aṣṭa` (eight) and `pada` (foot, square, step)

Compound type : Bahuvrīhi (aṣṭa+pada)

• aṣṭa – eight
  numeral
• pada – foot, step, square, place
  noun (neuter)

बहुद्यूतैः (bahudyūtaiḥ) - by many gambling games

(noun)

Instrumental, neuter, plural of bahudyūta

bahudyūta - many gambling games, much gambling

Compound of `bahu` (many) and `dyūta` (gambling)

Compound type : Tatpuruṣa (bahu+dyūta)

• bahu – many, much, abundant
  adjective (masculine)
• dyūta – gambling, dice-play
  noun (neuter)
  Past Passive Participle
  From root √div (to play, gamble)
  Root: div (class 4)

तथा (tathā) - and (and, similarly, thus)

(indeclinable)

गूढचतुर्थकैः (gūḍhacaturthakaiḥ) - by cryptic quatrains (by cryptic quatrains, by hidden four-lined verses/puzzles)

(noun)

Instrumental, masculine, plural of gūḍhacaturthaka

gūḍhacaturthaka - a riddle or puzzle composed in a four-lined verse, a cryptic quatrain

Compound of `gūḍha` (hidden, secret) and `caturthaka` (a quatrain, something in fours)

Compound type : Tatpuruṣa (gūḍha+caturthaka)

• gūḍha – hidden, secret, cryptic, obscure
  adjective (neuter)
  Past Passive Participle
  From root √guh (to hide)
  Root: guh (class 1)
• caturthaka – a quatrain, a set of four, related to fourth
  noun (masculine)
  From `caturtha` (fourth)