MESON Chess Problem Database

Problem Display
PID: 6825 (K1k3r1/6P1/3Q1P2/4p3/8/8/8/8 w - - 0 1)

Lebedev, Aleksandr N

Tijdschrift vd NSB, 1933

K1k3r1/6P1/3Q1P2/4p3/8/8/8/8

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2007
145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Qc6#
    • 1...Rf8
      • 2.gxf8Q#
      • 2.gxf8R#
    • 1...Rh8
      • 2.gxh8Q#
      • 2.gxh8R#
  • Keys
    • 1.f7!
      • threat
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxg7
        • 2.f8Q#
        • 2.f8R#
      • 1...Re8
        • 2.fxe8Q#
        • 2.fxe8R#
      • 1...Rd8
        • 2.Qc6#
      • 1...Rf8
        • 2.gxf8Q#
        • 2.gxf8R#
      • 1...Rh8
        • 2.gxh8Q#
        • 2.gxh8R#
      • 1...e4
        • 2.fxg8Q#
        • 2.fxg8R#

This anticipates 65179(2006)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::QAR2(A)
    • R(c);OGATE::PXR(c)=Q
  • Actual
    • P(B);
    • Threat
      • PXR(c)=Q
    • Vars
      • R(c);N_GUARD,XP(C)::P=Q
      • R(c);OGATE::PXR(c)=Q
      • R(c);SBLOCK::QAR2(A)
      • P(a);::PXR(c)=Q
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