Game-forcing 2♦♥

Unpassed 2/1 is 100% game-forcing. Opener defaults to rebid 2♠. Opener’s reverses promise extra strength.

1♠-2♦-FG, 4+♦
2♥4+♥
2♠MIN
2NTBAL MAX
3♣MAX, 4+♣
3♦MAX, 4+♦
3♥MAX, 5+♥
3♠MAX, 6+♠
3NTMIN, 5323
1♠-2♥-FG, 5+♥
2♠MIN
2NTBAL MAX
3♣MAX, 4+♣
3♦MAX, 4+♦
3♥MAX, 3+♥
3♠MAX, 6+♠
3NTMIN, 5233
4♣♦!MIN SPL, 0–1#, 4+♥
4♥MIN, 53(xx)