MESON Chess Problem Database

Problem Display
PID: 159080 (q4Q2/7b/r2n4/pp2p3/7R/4kP2/4NN2/4K3 w - - 0 1)

Sydenham, Colin Peter

Die Schwalbe, 1976

q4Q2/7b/r2n4/pp2p3/7R/4kP2/4NN2/4K3

#2

6 + 8

15513 Selected Chess Problems of Colin Sydenham 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Sd1#
      • 2.Sg4#
    • 1...Sf5
      • 2.Qa3#
    • 1...e4
      • 2.Qf4#
  • Keys
    • 1.Rh3!
      • threat
        • 2.Qh6#
      • 1...Qxf8
        • 2.f4#
      • 1...Qe4
        • 2.fxe4#
      • 1...Qd8
        • 2.f4#
      • 1...Sc4
        • 2.Qc5#
      • 1...Se4
        • 2.fxe4#
      • 1...Sf5
        • 2.Qa3#
      • 1...Sb7
        • 2.f4#
      • 1...Sf7
        • 2.Qc5#
      • 1...Sc8
        • 2.Qc5#
      • 1...Se8
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • S(f);OGATE::QAR(F)
    • P(d);N_GUARD::QAB1(F)
  • Actual
    • R(E);
    • Threat
      • QAB(F)
    • Vars
      • Q(h);N_GUARD,XQ(F)::R(E)+P(D)
      • Q(h);OGATE::R(E)+P(D),XQ(h)
      • Q(h);N_GUARD::R(E)+P(D)
      • S(f);OGATE::QAB(F)
      • S(f);OGATE::R(E)+P(D),XS(f)
      • S(f);OGATE::QAR(F)
      • S(f);S_CUTQ(h)::R(E)+P(D)
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