1. Qc3? [2. Qc4# A, Qa3# B]   1... Rxd5+ 2. Qc5 [3. Nc3#] Nb5 3. Qc4#   But 1... Rh3! 1. Qd4? [2. Qc4# A; not 2.Qa3# B]   1... Bb5 2. Nc3+ Ka3 3. Qb4/c5#   1... Rxd5+ 2. Qc5 [3. Nc3#] Nb5 3. Qc4#   But 1... Rh3!

Theme Garzón* (Queen Soliloquy); Theme Barnes

(*) Theme Garzón or Soliloquy - Stipulations
1)       All three white plays are executed by the same piece.
2)       The key enables a check for black, which did not exist in the initial position. The main line of the composition is built on the sequence arising from this check.
3)       The white piece that executes the soliloquy, which is the one that gives or causes the mate, cannot capture any pieces throughout the solution.

The theme was presented in October, 2016. Newsletter “Problemas” nº16, pages 414 and 415. https://drive.google.com/file/d/0B5lHTACLJK1fRVo2U01BdEdMN3c/view