MESON Chess Problem Database

Problem Display
PID: 81901 (2R1R3/N2n2N1/B5p1/2PpP2p/3k4/2p1p3/3n2Q1/7K w - - 0 1)

Allison, Christopher John

The Field, 1953

(First published on Thu Apr 16 1953)

2R1R3/N2n2N1/B5p1/2PpP2p/3k4/2p1p3/3n2Q1/7K

#2

9 + 8

5454 Near Snap 2012
15148 Sadier Collection 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Sc6#
    • 1...Sxe5
      • 2.Se6#
    • 1...g5
      • 2.Sf5#
  • Keys
    • 1.Qxg6!
      • threat
        • 2.Qd3#
      • 1...Sxc5
        • 2.Sc6#
      • 1...Sxe5
        • 2.Se6#
      • 1...Sc4
        • 2.Sb5#
      • 1...Se4
        • 2.Sf5#

Anticipated by 145591(1917), 145225(1920)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(h);SBLOCK,XP(C)::S(F)
    • S(h);SBLOCK,XP(D)::S(G)
    • P(g);N_GUARD::S(G)
  • Actual
    • Q(B);XP(g)
    • Threat
      • QAR1(B)
    • Vars
      • S(h);SBLOCK,XP(C)::S(F)
      • S(h);SBLOCK,XP(D)::S(G)
      • S(a);SBLOCK::S(F)
      • S(a);SBLOCK::S(G)
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