Fairy helpmates with echo diagonal-orthogonal 1

a) 1.Qb3 ROae6+ 2.Ke3 ROxb3#

b) 1.Qe2 ROhe6+ 2.Kc4 ROxe2#

Unbelievable miniature. Usage of two roses allows perfect transformation of miror model mate from orthogonal form to diagonal one. Almost everything is perfectly matched in the D-O manner.

a) 1.PAc5 (VAd6?) VAa3 2.VAe5 Sf4#

b) 1.VAc5 (PAc4?) PAc6 2.PAd4 Sf4#

Thanks to a board rotation it seems from a notation that moves B1 and W2 are played to the same squares. However it is B2 that really blocks the same square. The rotation of board changes of flight guard by wp. The rest (the most important, D-O one) is about switching the chinese lines on and off.

I'd like to remind you of Brian Stephenson 50 JT C 25.9.2004 for chinese pieces too...

a) 1.LEg7+ Sg8+ 2.PAg3+ Sf4#

b) 1.LEe8+ Sf8+ 2.VAb5+ Sd5#

Two series of checks are almost ideally matched in D-O form (only bLE makes two orthogonal moves, but motivation is matched perfectly) and in the finale we see double-check battery+antibatery mates.

1...Bb4 2.Ka2 Qb2 3.Ka3 Qa2#

1...Qc4+ 2.Kc3 Bd2 3.Kd3 Bc3#

W1 O-D moves block, B2 O-D bK moves, W2 create D-O white batteries, B3 bK walks into battery, W3 O-D follow-my-leader block moves that fire the batteries. Tanagra with excellent economy and very rich and well motivated content (with the only fairy element!).