Ser-h#10 Transmuting Kings

Sol.

  1.Kh4-g5 2.Kg5-f6 3.Kf6-e5 4.Ke5-d6 5.Kd6-c5 6.Kc5-c4 7.Kc4*c3 8.Kc3-d2 9.Kd2-e1 10.Ke1-f1 Bf5-d3 #

Monochrome Circe h#5

  1.Bf8-c5 b4*c5[+bBf8] 2.Bf8-d6 + c5*d6[+bBf8] 3.Bf8-e7 d6*e7[+bBf8] 4.Ka3-b2 e7*f8=B 5.Ra7-a1 Bf8-a3 #

AntiAndernach & Transmuting Kings

AntiAndernach (all pieces except kings change colour after non-captures, but stay the same colour after a capture) and Transmuting Kings (if the Kings are transmuting, the Kings move - only when checked - like the checking piece). Sol.:  1. Rd7*f7, a7-a8=B=b 2. Ba8-d5=w, Sd6*f7 #.

Ovidii Reges

Transmuting Kings are Kings that, when in check, can only move like the checking piece. A simple sample (tested!) of this condition (Sol. 1. Ka5-b6 a7-a8=B 2. Kb6-c7 Ba8-d5 3. Kc7-d8 Sh8-f7 #).

Mao!

There is a Mao in f5, and Pe2 is a Royal Pawn (a King which has all the powers and properties of a Pawn, ok, but a King). Solution? :)

Cooked! My solution was 1. e1=Mao, Kxh6 2. Maog2, Maoh4#, but there is 3. Nh3! Sorry :(

The Empty Chessboard Mystery

If your Italian is good, you can read, here, in "Best Problems" - an excellent problemistic journal directed by a friend of mine, Antonio Garofalo -, the solution and the little "Platonic" dialogue I've written about the "mystery". Buon divertimento :)