The Dreamboard
The Dreamboard is an extremely easy intermediate board that many top players separately found, back in the days when the Minesweeper version that came with Windows was still being used. Due to a low-quality random number generator, the boards came in cycles, so a relatively small set of boards would appear far more often than they should, and this was the most noticeable of the bunch. Many players got personal bests, and several world records were achieved. Detailed info and history can be found at the Minesweeper.info wiki.
The Dreamboard
Sometimes, the game would get into a cycle in a way that did not generate the exact boards in the cycle, but rather shifted versions that were somewhat different. Here are the known shifted versions of the dreamboard - recognizably similar, and all very easy.
Board Shift #1 of the Dreamboard
Board Shift #2 of the Dreamboard
Board Shift #3 of the Dreamboard
Board Shift #4 of the Dreamboard
Board Shift #5 of the Dreamboard
Board Shift #6 of the Dreamboard
Board Shift #7 of the Dreamboard