#same-suit

Busy Aces is a two-deck solitaire game with a 65% win rate, played with 104 cards. Twelve tableau piles each start with one card, and eight foundation piles build up by suit from Ace to King. Players draw from the stock to a waste pile, building tableau piles down by suit with no redeal permitted.

Forty Thieves is a two-deck solitaire game with only a 10% win rate, dealing 40 cards face-up into ten tableau columns. Players build eight foundation piles from Ace to King by suit, moving one card at a time in same-suit descending sequences. It is among the most difficult classic solitaire variants.

Russian Solitaire is a single-deck Yukon variant with only a 13% win rate. All 52 cards are dealt into seven tableau columns. Unlike Yukon, sequences must build down by suit only — not alternating colors. Any face-up card or group may move regardless of internal order. Foundations build up by suit from Ace to King.