MESON Chess Problem Database

Problem Display
PID: 20961 (5N2/K7/3p1n2/2k5/Q4n2/5B2/8/2br2R1 w - - 0 1)

Anderson, Gerald Frank

Natal Mercury, 1914

5N2/K7/3p1n2/2k5/Q4n2/5B2/8/2br2R1

#2

5 + 6

2740 Adventures of my Chessmen 1924
5383 A Tribute to G F Anderson 1974
15085 Australian Chess Forum 1996
3310 2345 Chess Problems 1997
133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Rxc1#
    • 1...Se2
      • 2.Se6#
    • 1...Sg2
      • 2.Se6#
    • 1...Sd3
      • 2.Se6#
    • 1...Sh3
      • 2.Se6#
    • 1...S4d5
      • 2.Se6#
    • 1...S4h5
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sg6
      • 2.Se6#
    • 1...Sg4
      • 2.Sd7#
    • 1...S6d5
      • 2.Sd7#
    • 1...S6h5
      • 2.Sd7#
    • 1...Sd7
      • 2.Sxd7#
    • 1...Sh7
      • 2.Sd7#
    • 1...Se8
      • 2.Sd7#
    • 1...Sg8
      • 2.Sd7#
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qc4#
      • 1...Kxd5
        • 2.Rg5#
      • 1...Rxd5
        • 2.Rxc1#
      • 1...S4xd5
        • 2.Se6#
      • 1...S6xd5
        • 2.Sd7#
      • 1...Rd4
        • 2.Qa5#

There are these versions: 175883

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • R(b);OGATE::R(A),XB(a)
    • S(c);N_GUARD::S(E)
    • S(c);N_GUARD::S(E),XS(c)
    • S(f);N_GUARD::S(E)
    • S(f);N_GUARD::S(E),XS(f)
  • Actual
    • B(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XB(B)::R(A)
      • R(b);OGATE,SBLOCK,XB(B)::R(A),XB(a)
      • S(c);N_GUARD,SBLOCK,XB(B)::S(E)
      • S(f);N_GUARD,SBLOCK,XB(B)::S(E)
      • R(b);SBLOCK::QAR2(C)
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