3-02 Power combo: Concealed Hand + All Chows + All Simples
All Simples is easy to build, since most of the tiles count toward it. However, it only scores 2 points. But add Concealed Hand and All Chows, and the hand is suddenly very close to finished.
Take Figure 1. You're one tile away from making ready on Mixed Shifted Chows, but our recommended play is to break up the hand and discard . Once you make a hand like the one shown in Figure 2, you're very close to finishing.
If the player to your left discards , claim it to complete Mixed Shifted Chows.
You cannot go out on an opponent's discard, but if you pick the tile yourself you'll score Fully Concealed Hand (4 pts.) + All Chows (2 pts.) + All Simples (2 pts.). In other words, with a combo of these three hands, you're guaranteed to make the minimum 8 points.
Remembering this simple fact will make it easier to build hands properly. For example, take Figure 3.
You could discard or to be one tile away from making ready with a Mixed Straight. But you would do better to discard and leave your options open, rather than rely on two specific tiles ( and ).
Let's assume you follow our advice, and make ready with the hand shown in Figure 4.
You've lost the Mixed Straight, but you can go out on an opponent's discard with this hand, since it scores Concealed Hand (2 pts.) + All Chows (2 pts.) + All Simples (2 pts.) + Closed Wait (1 pt.) + Mixed Double Chow (1 pt.) for a total of 8 points. The combo of Concealed + All Chows + All Simples gives you 6 points, so you need only add two more through some combination of Mixed Double Chow, Pure Double Chow, Short Straight, or one of the 1-chance waits. The best strategy is often to avoid narrowing your possibilities, and concentrate on building chows with the simple tiles.