Pôs Rhesymeg

Mae Siôn Corn wedi cael noson hir yn dosbarthu anrhegion.

Mae'n cyrraedd y stryd olaf o dai ac yn darganfod bod y pum anrheg olaf yn ei sach wedi disgyn allan o'u papur lapio ac wedi colli eu tagiau enw yn ystod y daith drwy dywydd garw ar gyflymder uchel.

Diolch byth, mae gan Siôn Corn restr wirio ar gyfer enwau a chyfeiriadau, felly mae'n ei thynnu allan o'i boced, yn crafu'r briwsion mins pei oddi arni, ac yn syllu arni mewn dychryn. Mae'r ysgrifen wedi'i gwlychu gan law ac o bosibl, rhywfaint o frandi.

Dim ond rhywfaint o'r wybodaeth y gall ei darllen. Allwch chi ei helpu i ddarganfod pa blentyn sy'n cael pob tegan, beth yw rhif eu tŷ a pha liw papur lapio ddylai'r tegan fod ynddo?

A horrifed Santa gazing at his soggy list

Cliwiau:

Rhifau'r tai sydd ar ôl yw 1, 2, 3, 4, a 5.

Mae anrheg Glenwen wedi'i lapio mewn papur glas.

Nid yw'r gêm cyfrifiadur i Dafydd.

Mae'r bocs celf i Gwion sy'n byw mewn tŷ â rhif is na'r plentyn sydd ag anrheg mewn papur lapio piws.

Mae rhif tŷ Bronwyn yn is na rhif tŷ Gwion.

Mae'r tedi mewn papur lapio coch ar gyfer y plentyn y mae rhif eu tŷ yn is na'r tŷ lle mae angen dosbarthu'r anrheg mewn papur lapio gwyrdd.

Nid yw anrheg Seren wedi'i lapio mewn papur gwyrdd.

Nid yw Dafydd yn byw yn nhŷ rhif 3.

Mae angen dosbarthu'r robot anwes i dŷ sydd â rhif is na'r tŷ ble mae'r tedi'n mynd.

Ni ddylid dosbarthu'r anrheg coch i dŷ rhif 1.

Mae angen dosbarthu'r Lego i dŷ sydd â rhif un yn fwy na ble mae angen dosbarthu'r anrheg coch iddo.

Mae tŷ rhif 3 yn disgwyl anrheg wedi'i lapio mewn papur melyn.

Cymorth/Awgrymiadau

Efallai y bydd angen i chi ddefnyddio'r Grid Rhesymeg isod i ddatrys y pos hwn. Os nad ydych chi'n gwybod sut i ddefnyddio grid rhesymeg, ewch i'r wefan posau rhesymeg hon i gael tiwtorial

Ar ôl gorffen, gallwch ysgrifennu'r atebion gan ddefnyddio tabl fel yr un isod.

Rhif y Tŷ	Enw'r Plentyn	Tegan	Papur Lapio
1
2
3
4
5

Cymraeg

Logic Puzzle

Santa has had a long night delivering presents.

He reaches the final street of houses to discover that during the journey through rough weather at high speed, the last five gifts in his sack have fallen out of their wrapping and lost their name tags.

Thankfully, Santa has a checklist for names and addresses, so he pulls it out of his pocket, peels off the mince pie crumbs, and stares at it in horror. The writing has been soaked through by rain and possibly some brandy.

He can only make out some of the information. Can you help him work out which kid each toy is going to, which house number they live in and what colour wrapping paper they should be in?

The Clues:

The remaining houses have the numbers 1, 2, 3, 4, and 5.

Glenwen's present is wrapped in blue paper.

The computer game is not for Dafydd.

The art box is for Gwion who lives in a house number lower than the kid with a purple wrapped present.

Bronwyn's house number is lower than Gwion's.

The teddy in red wrapping paper is for the person whose house number is lower than where the green wrapped present needs delivering.

Seren's present is not wrapped in green paper.

Dafydd does not live at house number 3.

The robot pet is to be delivered to a house number lower than where the teddy was going.

The red present is not to be delivered to house number 1.

The Lego is to be delivered to the house with a number one higher than where the red present needs delivering.

House number 3 is expecting a present wrapped in yellow paper.

Help/Hints

You may need to use the below Logic Grid to solve this puzzle. If you do not know how to use a logic grid, you can visit this logic puzzle website for a tutorial

Once completed, you can use a table like the one below to write the answers.

House Number	Kid's Name	Toy	Wrapping Paper
1
2
3
4
5