MESON Chess Problem Database

Problem Display
PID: 21996 (8/Qp6/1n6/8/5N2/2p2p2/2P2P1p/R3K1kr w Q - 0 1)

Anderson, Gerald Frank

Chess Amateur (The), 1923

8/Qp6/1n6/8/5N2/2p2p2/2P2P1p/R3K1kr

#2

6 + 7

2740 Adventures of my Chessmen 1924
273 Mat Plus 1995
133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.0-0-0#
    • 1...Sc4
      • 2.0-0-0#
    • 1...Sd5
      • 2.0-0-0#
    • 1...Sd7
      • 2.0-0-0#
    • 1...Sa8
      • 2.0-0-0#
    • 1...Sc8
      • 2.0-0-0#
  • Tries
    • 1.Qa6?
      • threat
        • 2.Qf1#
      • 1...Sc4
        • 2.Qg6#
      • 1...bxa6!
  • Keys
    • 1.Ra6!
      • 1...bxa6
        • 2.Qg7#
      • 1...Sa4
        • 2.Rg6#
      • 1...Sc4
        • 2.Rg6#
      • 1...Sd5
        • 2.Rg6#
      • 1...Sd7
        • 2.Rg6#
      • 1...Sa8
        • 2.Rg6#
      • 1...Sc8
        • 2.Rg6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);::0-0-0
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(f);OGATE::QAR(F)
      • Refutation
        • P(g);XQ(F)
  • Actual
    • R(A);
    • Vars
      • P(g);OGATE,XR(A)::QAR(F)
      • S(f);OGATE::R(A)
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