Competitive Player Searching for help

[Hauteclere]

First of all, sorry if i'm a bother.

I need help building a competitive deck only using cards from the first generation (Base Jet, Jungle, Fossil, base Set 2, Team Rocket, Gym Heroes and Challenge) But I can't find any premade decks using only these cards. I would appreciate it if someone could tell me a strategy or a good combination of cards for the first generation.

Thanks.

Pd: My oponents will use first generation cards as well

 

[Darokkian Magmortar]

Try haymaker or gyaradous-dark blaistoise

 

[datorange]

my deck from the old days was alakazam, kangaskhan, chansey, and the power house exeggutor.

the basic strategy was to use kangaskan's fetch attack to draw exeggutor and alakazam (or use pokeballs but kangaskhan is good to get extra energy as well)
once you have both, stack exeggutor with as many energy as you can and use its big explosion attack, with 10 or so energy on exeggutor you can kill every old pokemon card in one hit. when exeggutor becomes damaged, use alakazam's pokepower to move the damage counters to benched chanseys, use pokecenters to remove the damage counters from chansey and repeat the process as needed