MESON Chess Problem Database

Problem Display
PID: 239199 (3b4/pp6/8/2Q5/k7/4N3/K7/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Problemist Pribuzhya, 1991

3b4/pp6/8/2Q5/k7/4N3/K7/8

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Qc4#
    • 1...b5
      • 2.Qa3#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sb2#
        • 2.Sc3#
      • 1...b5
        • 2.Qa3#
      • 1...Ba5
        • 2.Sb2#
      • 1...Bf6!
    • 1.Sd5?
      • threat
        • 2.Sc3#
        • 2.Qb4#
      • 1...b5
        • 2.Qa3#
        • 2.Qb4#
      • 1...Bf6
        • 2.Qb4#
      • 1...Be7
        • 2.Sc3#
      • 1...a5
        • 2.Sc3#
        • 2.Qc4#
      • 1...Ba5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb2#
      • 1...Bf6
        • 2.Qa5#
      • 1...b5
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK::QAR2(C)
    • P(c);SBLOCK::QAR1(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);SBLOCK::QAR1(C)
        • B(d);::S(B)
      • Refutation
        • B(d);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAR1(C)
        • B(d);::S(B)
      • Refutation
        • B(d);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • B(d);N_GUARD::QAR1(C)
      • P(c);SBLOCK::QAR1(C)
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