MESON Chess Problem Database

Problem Display
PID: 15115 (N7/8/PP6/kN1Q1R2/1p4R1/p7/3p3K/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

1st Prize, 64 Shakhmatnoe obozrenie, 1980

N7/8/PP6/kN1Q1R2/1p4R1/p7/3p3K/8

#2

8 + 4

3752 FIDE Album (1980-1982) 1988
6167 Viktor Chepizhny 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Sc3#
    • 1...Kxa6
      • 2.Sbc7#
    • 1...a2
      • 2.Qxa2#
    • 1...b3
      • 2.Sbc7#
  • Tries
    • 1.Sd4+?
      • 1...Ka4
        • 2.Qb3#
        • 2.Qc6#
        • 2.Qa5#
        • 2.Qb5#
        • 2.Qd7#
      • 1...Kxa6!
    • 1.Sd6+?
      • 1...Kxa6
        • 2.Qc4#
        • 2.Qb7#
        • 2.Qd3#
        • 2.Qa5#
        • 2.Qb5#
      • 1...Ka4!
    • 1.Qxd2?
      • 1...Ka4
        • 2.Qxb4#
      • 1...a2
        • 2.Qxa2#
      • 1...Kxa6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Sc3#
      • 1...Ka4
        • 2.Qxa3#
      • 1...Kxa6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(d);P-FLIGHT,P_SPINP(c)::S(C)
    • K(d);P-FLIGHT,XP(F)::S(C)
    • P(b);OGATEB::QAR(D),XP(b)
    • P(c);::QAR(D)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,XP(F)
    • Try
      • S(C);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(D);P_PINP(c),XP(a)
      • Vars
        • K(d);P-FLIGHT::QAR1(D),XP(c)
        • P(b);OGATEB::QAR(D),XP(b)
      • Refutation
        • K(d);N_SPINP(c),P-FLIGHT,XP(F)
  • Actual
    • Q(D);
    • Threat
      • R(E)+S(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(c)::QAR1(D),XP(b)
      • K(d);P-FLIGHT,XP(F)::QAB(D)+S(C)
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Developed and maintained by Brian Stephenson.
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