MESON Chess Problem Database

Problem Display
PID: 51145 (8/2P1p3/2n2p2/5k1K/8/2N1P3/4N2b/4Q3 w - - 0 1)

Allison, Christopher John

Manchester Guardian, 1951

8/2P1p3/2n2p2/5k1K/8/2N1P3/4N2b/4Q3

#2

6 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sd4#
    • 1...e5
      • 2.c8Q#
      • 2.c8B#
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qe4#
      • 1...Ke5
        • 2.Qd5#
      • 1...Ke6
        • 2.Qd5#
      • 1...Be5
        • 2.Qh3#
      • 1...Se5
        • 2.Sd4#
      • 1...e5
        • 2.c8Q#
        • 2.c8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,SBLOCK::S(B)
    • P(e);N_GUARD,SBLOCK::P=Q
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::QAB1(A)
      • B(a);OGATE,SBLOCK::QAB(A)
      • S(c);N_GUARD,SBLOCK::S(B)
      • P(e);N_GUARD,SBLOCK::P=Q
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