MESON Chess Problem Database

Problem Display
PID: 36956 (n2B1K2/1pNN4/3kP3/1P1P1p2/1ppr4/Q7/n7/1b6 w - - 0 1)

Storozhenko, Ivan Ivanovich

1st Prize, Magadanskaya Pravda, 1994

n2B1K2/1pNN4/3kP3/1P1P1p2/1ppr4/Q7/n7/1b6

#2

8 + 9

3705 Album Russia (1992-1994) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qxb4#
    • 1...Sc3
      • 2.Qxb4#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Se8#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Sxc7
        • 2.Be7#
      • 1...Be4
        • 2.Qf4#
      • 1...Re4!
    • 1.Qg3+?
      • 1...Rf4
        • 2.Qxf4#
      • 1...f4!
    • 1.Qa7?
      • threat
        • 2.Qc5#
      • 1...b6
        • 2.Be7#
      • 1...Sb6
        • 2.Qxb6#
      • 1...Rxd5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qe5#
      • 1...Rxd5
        • 2.Se8#
      • 1...Re4
        • 2.Qc5#
      • 1...Be4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::QAB(A),XP(c)
  • Tries
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • S(E)
      • Vars
        • R(e);OGATE,XP(C)::QAR1(A),XR(e)
        • S(i);SBLOCK,XS(E)::B(G)
        • B(a);S_CUTR(e)::QAB(A)
      • Refutation
        • R(e);
    • Try
      • Q(A);CHECK,N_PINP(c)
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB(A),XR(e)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • QAB1(A)
      • Vars
        • P(h);::B(G)
        • S(i);N_GUARD::QAR2(A),XS(i)
      • Refutation
        • R(e);XP(C)
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • QAB1(A)
    • Vars
      • R(e);SBLOCK,XP(C)::S(E)
      • R(e);OGATE::QAB1(A)
      • B(a);S_CUTR(e)::QAB(A)
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