MESON Chess Problem Database

Problem Display
PID: 243680 (7K/1p1B4/1p6/QqR5/3P1k1P/8/3N1P2/8 w - - 0 1)

Malafienko, Nikolai

Tidskrift for Schack, 1981

7K/1p1B4/1p6/QqR5/3P1k1P/8/3N1P2/8

#2

8 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...bxc5
      • 2.Qc7#
  • Tries
    • 1.Rf5+?
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Kg4!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Rg4#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Qxd7
        • 2.Qe5#
      • 1...Qxg5
        • 2.Qxg5#
      • 1...Qe2
        • 2.Qf5#
      • 1...Qf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE,XR(F)::QAB(E)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • Q(b);OGATE,XR(F)::QAR1(E),XQ(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • Q(b);CHECK,OGATE::QAB1(E),XQ(b)
      • Q(b);OGATE,XB(G)::QAB1(E)
      • Q(b);OGATE,XR(F)::QAB1(E),XQ(b)
      • Q(b);OGATE::QAR1(E)
      • Q(b);OGATE::QAR1(E),XQ(b)
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