Polish Club (Polish: Wspólny Język, literally "Common Language") is a bridge bidding system which was developed in Poland, where it is the most popular bidding system, and which is also used by players of other countries. It is a type of small club system. In the Polish Club, a 1♣ opening bid is forcing for one round but does not necessarily show a strong hand; in most versions of this system it shows either a weak balanced hand (about 12-14HCP), a natural 1♣ opening or any strong hand. Consequently, bids of 1♦, 1♥ and 1♠ are limited to about 18HCP, and also 1♦ shows at least four diamonds (five in some versions of the system). The 2♣ opening is usually reserved to show a limited hand with long clubs and possibly a four-card major, similar to the Precision 2♣ opening. The following outline of the system is based on that given in System licytacyjny Wspólny Język 2005 - opis skrócony ("Polish Club 2005 - a brief description") by Krzysztof Jassem. The latest version translated into English (Polish Club International, 2010), is available here: 1♣ opening 12–14 HCP, no 5-card major, no 4-card diamond suit. Five clubs are possible if the hand is balanced. Opener should not bid clubs on the next round – even in competition. 15–17 HCP, five clubs, unbalanced distribution. Opener bids clubs in the next round. 18+ HCP, any distribution. 1♦ response negative: 0–8 HCP. In the 7–8 HCP range, Responder should not have a 4-card major (the response of one of a major is 7+ HCP, the 1NT response is 9–11 HCP). 9–11 unbalanced; either both minors (5-4), or one poor minor. (The hand does not qualify for any of the responses: 1NT, 2 in a minor, 3 in a minor). 12–16 HCP balanced without a 4-card major. The hand is not suitable for declaring no trumps. 1♣ - 1♦ ? 1♥/1♠ = better major (3 cards is possible) 1NT = 18–19 HCP, balanced 2♣ = 15+ HCP, natural 2♦ = artificial GF, exclusive of 2-suiter hands 2♥, 2♠, 3♣, 3♦ = 5+ in the bid suit, semi-forcing 2NT = 22–24 HCP, balanced 3♥/3♠/4♣ = GF, 2-suiter (5-5): 3♥ – with hearts, then Responder’s 3♠ shows preference over hearts, 3NT asks for a minor, 4♣, 4♦ are cue bids with agreed hearts, 3♠ – spades and a minor, then 3NT asks for a minor, 4♣, 4♦