MESON Chess Problem Database

Problem Display
PID: 11759 (3K1k2/5P2/5RPb/8/8/8/8/5Q2 w - - 0 1)

Lider, Valentin Viktorovich

HM., Shakhmaty v SSSR, 1971

3K1k2/5P2/5RPb/8/8/8/8/5Q2

#2

5 + 2

2012 Miniature Chess Problems from Many Countries 1981
3296 Shakhmatny zadachi miniaturi 1987

SOLUTION

  • SOUND
  • Sets
    • 1...Kg7
      • 2.f8Q#
  • Tries
    • 1.Qg1?
      • 1...Kg7
        • 2.f8Q#
      • 1...Bc1
        • 2.g7#
      • 1...Bd2
        • 2.g7#
      • 1...Be3
        • 2.g7#
      • 1...Bf4
        • 2.g7#
      • 1...Bg7
        • 2.Qc5#
      • 1...Bg5!
    • 1.Qh1?
      • threat
        • 2.Qxh6#
      • 1...Kg7
        • 2.f8Q#
      • 1...Bc1
        • 2.Qh8#
      • 1...Bd2
        • 2.Qh8#
      • 1...Be3
        • 2.Qh8#
      • 1...Bf4
        • 2.Qh8#
      • 1...Bg5
        • 2.Qh8#
      • 1...Bg7!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qxh6#
      • 1...Kg7
        • 2.f8Q#
      • 1...Bc1
        • 2.Qh8#
      • 1...Bd2
        • 2.Qh8#
      • 1...Be3
        • 2.Qh8#
      • 1...Bf4
        • 2.Qh8#
      • 1...Bg5
        • 2.Qh8#
      • 1...Bg7
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATE,S_FLIGHT::P=Q
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
        • B(a);N_GUARD::P(C)
        • B(a);SBLOCK::QAB(A)
      • Refutation
        • B(a);P_PINR(B)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XB(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
        • B(a);OGATE::QAR2(A)
        • B(a);OGATE,P_PINR(B)::QAR2(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XB(a)
    • Vars
      • K(b);OGATE,S_FLIGHT::P=Q
      • B(a);OGATE::QAR2(A)
      • B(a);OGATE,P_PINR(B)::QAR2(A)
      • B(a);SBLOCK::QAB(A)
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