MESON Chess Problem Database

Problem Display
PID: 57826 (r3k2r/Pp1n4/7p/1Q1B4/2p3R1/B7/8/2K2b2 w qk - 0 1)

Kopyl, Valery Volodimirovich

Melnichenko, Viktor Oleksandrovich

Comm., idee & form, 2002-2003

r3k2r/Pp1n4/7p/1Q1B4/2p3R1/B7/8/2K2b2

#2

6 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.axb8Q#
      • 2.axb8R#
    • 1...Rd8
      • 2.Re4#
    • 1...Rh7
      • 2.Rg8#
    • 1...Rg8
      • 2.Rxg8#
    • 1...0-0-0
      • 2.Qxb7#
  • Tries
    • 1.Rg7?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Qxb7#
      • 1...Rd8
        • 2.Bf7#
      • 1...Bh3!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...0-0-0
        • 2.Qc5#
      • 1...Rd8
        • 2.Qh5#
      • 1...Rh7
        • 2.Rg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(f);OGATE::PXR(f)=Q
    • R(f);SBLOCK::R(C)
    • R(h);N_GUARD::R(C)
    • R(h);N_GUARD::R(C),XR(h)
    • K(g);0-0-0,N_SPINS(e),OGATEB::QAB1(D),XP(d)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(D),XS(e)
      • Vars
        • K(g);N_SPINS(e),P-FLIGHT::QAR1(D),XS(e)
        • K(g);0-0-0,N_SPINS(e),OGATEB::QAB1(D),XP(d)
        • R(f);SBLOCK::B(E)
      • Refutation
        • B(a);
  • Actual
    • B(E);
    • Threat
      • QAB1(D),XS(e)
    • Vars
      • K(g);N_SPINS(e),P-FLIGHT::QAR1(D),XS(e)
      • K(g);0-0-0,OGATEB::QAR(D)
      • R(f);SBLOCK::QAB(D)
      • R(h);N_GUARD::R(C)
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