Mae'r eira'n disgyn yn drwm y tu allan, gan lapio'r strydoedd mewn gorchudd gwyn.

The snow is falling heavily outside, wrapping the streets in a white blanket.

Yn ganol Caerdydd, yng nghanol y goleuadau Nadolig, digwyddodd gêm poker arbennig.

In the center of Caerdydd, amidst the Christmas lights, a special poker game took place.

Roedd y siop gemau cardiau wedi'i haddurno'n hardd gyda choeden Nadolig fawr, deillion bychan yn twinklo ar hyd a lled.

The card game store was beautifully decorated with a large Christmas tree, tiny blinds twinkling everywhere.

Roedd y stori ar fin dechrau.

The story was about to begin.

Roedd Eira yn adnabyddus am ei gallu i ymresymu.

Eira was known for her logical reasoning skills.

Roedd hi'n breuddwydio am fod yn chwaraewr poker proffesiynol.

She dreamed of becoming a professional poker player.

Wrth ei hochr, Gwyn, ei gefnder diniwed o bentref bach yn y Gogledd, wedi dod i ymweld dros yr wyliau.

Beside her, Gwyn, her innocent cousin from a small village in the North, had come to visit for the holidays.

Doedd Gwyn ddim yn gwybod dim am y byd poker.

Gwyn knew nothing about the poker world.

Aeth y ddau i mewn i'r ystafell hapchwarae.

The pair entered the gaming room.

Roedd y bwrdd yn llawn o dalpiau poker a diodydd blasus.

The table was full of poker chips and delicious drinks.

Roedd y chwedl am fath arbennig iawn o anrheg mewn pot Secret Santa wedi cyrraedd clustiau pob un - casgliad enfawr o byliau eira, cariad cyfrinachol Eira.

The legend of a very special type of gift in a Secret Santa pot had reached everyone's ears - a huge collection of snow globes, Eira's secret love.

Ond pwy fyddai'n dysgu?

But who would take the plunge?

Roedd Gwyn, gyda'i ymddangosiad, yn edrych yn union fel chwaraewr poker proffesiynol enwog.

Gwyn, with his appearance, looked just like a famous professional poker player.

Cyn iddo sylweddoli beth oedd yn digwydd, roedd ei enw yn cael ei alw yn uchel ar draws yr ystafell.

Before he realized what was happening, his name was being called loudly across the room.

Penderfynodd Eira ychwanegu at ychydig o hwyl trwy beidio ag egluro'r camgymeriad i Gwyn.

Eira decided to add a bit of fun by not explaining the mistake to Gwyn.

Dyma oedd ei cyfle.

This was her opportunity.

Wrth i'r gêm fynd yn ei blaen, roedd Gwyn yn dibynnu ar gamgymeriadau ei wrthwynebwyr a chyngor bach Eira rhwng pob tro, wrth iddi sibrwd iddo oddi tan ei anadl.

As the game progressed, Gwyn relied on his opponents' mistakes and a little advice from Eira between each turn, as she whispered encouragement under her breath.

Roedd ei lwc yn gwell nag a gweldai unrhyw un.

His luck was better than anyone could have anticipated.

Chwerthin a thynnu sbôt oedd y cynulleidfa am Gwyn y 'pro'.

The audience laughed and cheered at Gwyn the 'pro'.

Roedd pob golwg ar y dwylo olaf.

All eyes were on the final hands.

Yna, yn annisgwyl, dyma Gwyn yn rhoi popeth ar y linell.

Then, unexpectedly, Gwyn put everything on the line.

Mynd 'pob un i mewn' oedd ei wneud.

Going 'all in' was his move.

Roedd pawb yn y stafell yn rhyfeddu, yn gwybod ei fod yn digwydd eiliadau o lethr gwyn neu golled mawr ar gyfer Gwyn.

Everyone in the room marveled, knowing it was moments away from either a great triumph or a significant loss for Gwyn.

Gyda phob sbienddrych a sbit gan y broffesiynolwyr, fe ddaeth y diwedd.

With every glance and smirk from the professionals, the end came.

Torchi gilydd oedd y llaw fuddugol - oedd y cyfan angenrheidiol.

A full house was the winning hand - all that was needed.

Er mawr rwystredigaeth pawb arall, enillodd Gwyn gyda llaw na allai hyd yn oed yr arbenigwr amau am gywirdeb.

To the great frustration of everyone else, Gwyn won with a hand not even the expert could dispute for accuracy.

Pan gorffennodd y gêm, roedd Eira'n wynebu'r gwir.

When the game ended, Eira faced the truth.

Roedd wedi dysgu rhywbeth pwysig - weithiau mae bod yn wir i'ch hun, gydag unionsythder a meddwl clir, yn dod â'r canlyniadau gorau - hyd yn oed mewn gêm â chasineb.

She had learned something important - sometimes being true to yourself, with integrity and clear thinking, brings the best results – even in a game of chance.

Gyda'r enillion, a'r pot Secret Santa yn cynnwys y casgliad byliau eira annwyl, roedd Eira yn llawen.

With the winnings, and the Secret Santa pot containing the beloved snow globe collection, Eira was overjoyed.

Roeddent wedi ennill mwy na'r gêm - roeddent hefyd wedi dathlu Nadolig hudol gyda phrofiad bythgofiadwy.

They had won more than the game - they had also celebrated a magical Christmas with an unforgettable experience.

Ar ddiwedd y noson, wrth i'r goleuadau pylu a'r awyr neidiog o gadget Eira, sylweddolwyd bod gêm poker yn gymaint yn ymwneud â mis-ddeall ac ag am wirionedd dwfn.

At the end of the night, as the lights dimmed and the sky twinkled from Eira's gadget, it was realized that a poker game is as much about misunderstandings as it is about deep truths.

Roedd Eira yn gwybod y byddai hi'n defnyddio'r wers hon am weddill ei bywyd hapchwarae.

Eira knew she would use this lesson for the rest of her gaming life.