Headbangers

sh=12

No white King

Headbanger (2:8 Leaper) in h1

Sol. 1. g5 2. g4 3. g3 4. g2 5. gxh1=HB 6. HBa2 7. HBh3 8. HBa4 9. HBh5 10. HBa6 11. HBh7 12. a6, Nec6=

Will it work? I don't know & I don't care: it's only rock'n'roll and I like it :)

The Convenient Ziggy :)

sh#3

Ziggy (5:8 leaper) in h1

1. Zd8 2. Kh1 3. Bh2, d8=Z# :)

King in the Corner

sh#20

Equipollent Circe*

Sol.  1.Kh1-g2 2.Kg2-f3 3.Kf3-e4 4.Ke4-d5 5.Kd5-c6 6.Kc6-b7 7.Kb7-a8 8.Ka8*a7[+wBa6] 9.Ka7*a6[+wBa5] 10.Ka6*a5[+wBa4] 11.Ka5*a4[+wBa3] 12.Ka4*a3[+wBa2] 13.Ka3*a2[+wBa1] 14.Ka2-b3 15.Kb3-c4 16.Kc4-d5 17.Kd5-e6 18.Ke6-f7 19.Kf7-g8 20.Kg8-h8 f6-f7 #

* After a capture the captured piece is reborn on a square defined with respect to the square where it stood before its capture, as follows: The rebirth square lies in the same direction as that of the capturing move and at a distance equal to the length of that move. If the rebirth square is occupied or would be off the board the capture is normal. [“Equipollent” simply means “equivalent”.]

Hop-Frog

sh#7

Equipollent Circe

Hop-Frog (3:6-Leaper) in a6

Sol. 1. HFf8 2. a5 3. a4 4. a3 5. a2, 6. a1=B 7. Bxd4 (wPg7), gxHFf8=N#

Aequipollentia Rulez

sh#10

Equipollent Circe*

Sol. 

  1.Ke6-e7   2.Ke7-f8   3.Kf8*f7[+wSf6]   4.Kf7*f6[+wSf5]   5.Kf6-g5   6.Kg5-g4   7.Kg4-h3   8.Kh3-h2   9.Kh2-h1  10.Ra2-h2 Sf5-g3 #

* After a capture the captured piece is reborn on a square defined with respect to the square where it stood before its capture, as follows: The rebirth square lies in the same direction as that of the capturing move and at a distance equal to the length of that move. If the rebirth square is occupied or would be off the board the capture is normal. [“Equipollent” simply means “equivalent”.]

Equipollent Circe

Ser-#5

Equipollent Circe*

  1.Qc2-d3 2.Qd3-e2 3.Kd1*d2[+wBd3] 4.Kd2*d3[+wBd4] 5.Qe2-e4 Rg2-d2 #

*After a capture the captured piece is reborn on a square defined with respect to the square where it stood before its capture, as follows: The rebirth square lies in the same direction as that of the capturing move and at a distance equal to the length of that move. If the rebirth square is occupied or would be off the board the capture is normal. [“Equipollent” simply means “equivalent”.]

Ubi-Ubi Roi

#4

Black Ubi-Ubi [=UU] in h1

Sol. 1. Ng6, e4 2. a7, e3 3. a8=UU+, e2+ 4. UU*e2#

Festina lente

#3

Black Minimummer*

Mirror Circe** 

1.Rc5-c2 ! threat:
   2.Rc2-g2 zugzwang.
       2...h3-h2
          3.Rg2-g1 #
1...h3-h2
     2.Rc2*h2 +
         2...Bb8*h2[+wRh8]
              3.Rh8*h2 #

* Black must play his geometrically shortest move or may choose from among shortest moves of equal length, distances being measured from the center of each square. Diagonal and oblique distances are measured from the orthogonal coordinates by using Pythagoras’s s theorem (take the square root of the sum of the squares of the orthogonal distances). All other orthodox chess rules apply.
**  Like Circe, but the rebirth square of a piece is the square occupied at the beginning of an orthodox game by a piece of the same kind and of the other side. Related to the square they occupied before the rebirth: Rooks, Bishops and Knights are reborn on the square of the same color; Pawns (including fairy Pawns) are reborn on the same file; other fairy pieces are reborn on the same file and on the promotion rank of the other side.

Ecric

Ser-h#9

Mirror Circe*

 1.Kd8-e8 2.Ke8-f8 3.Kf8-g8 4.Kg8-h7 5.f7*g6[+wRa8] 6.Kh7-h6 7.Kh6-g5 8.Kg5-f6 9.Kf6-f7 Ra8-f8 #

* A captured piece is reborn on a square where a piece of the opposite colour would be reborn in ordinary Circe.