MESON Chess Problem Database

Problem Display
PID: 51220 (2R5/p7/3N4/1nNp4/3k1P2/7p/KP6/Q1B5 w - - 0 1)

Morse, Christopher Jeremy

Manchester Guardian, 1954

2R5/p7/3N4/1nNp4/3k1P2/7p/KP6/Q1B5

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.bxa3#
      • 2.b3#
      • 2.b4#
    • 1...Sc3+
      • 2.bxc3#
    • 1...Sxd6
      • 2.b3#
    • 1...Sc7
      • 2.b4#
  • Tries
    • 1.Bd2?
      • threat
        • 2.Qg1#
      • 1...Sc3+
        • 2.bxc3#
      • 1...Sxd6
        • 2.b3#
      • 1...h2!
    • 1.Qb1?
      • threat
        • 2.Sb3#
        • 2.Se6#
        • 2.Qd3#
      • 1...Sc7
        • 2.Sb3#
      • 1...Sc3+!
  • Keys
    • 1.Kb1!
      • threat
        • 2.Qa4#
      • 1...Sa3+
        • 2.bxa3#
      • 1...Sc3+
        • 2.bxc3#
      • 1...Sxd6
        • 2.b3#
      • 1...Sc7
        • 2.b4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);CHECK,OGATE::P(D),XS(c)
    • S(c);N_GUARD,XS(G)::QAB(A)+P(D)
    • S(c);N_GUARD::QAB(A)+P(D)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAB(A)
      • Vars
        • S(c);CHECK,OGATE::P(D),XS(c)
        • S(c);N_GUARD,XS(G)::QAB(A)+P(D)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(F)
      • Refutation
        • S(c);CHECK
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAR(A)
    • Vars
      • S(c);CHECK,OGATE::QAB(A)+P(D),XS(c)
      • S(c);CHECK,OGATE::P(D),XS(c)
      • S(c);N_GUARD,XS(G)::QAB(A)+P(D)
      • S(c);N_GUARD::QAB(A)+P(D)
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