MESON Chess Problem Database

Problem Display
PID: 197859 (8/2p1N3/K7/N7/k7/2Q5/8/n1b5 w - - 0 1)

Koshelenko, Valery Fedotovich

Kukin, Gennady

Pypa, Volodimir Iosifovich

Zadachi i Etyudi, 1997

8/2p1N3/K7/N7/k7/2Q5/8/n1b5

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qb3#
    • 1...Sb3
      • 2.Qxb3#
  • Tries
    • 1.Sec6?
      • threat
        • 2.Qb4#
      • 1...Bd2
        • 2.Qxa1#
      • 1...Sc2
        • 2.Qb3#
      • 1...Ba3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qb4#
      • 1...Ba3
        • 2.Qc6#
      • 1...Bd2
        • 2.Qxa1#
      • 1...Sc2
        • 2.Qb3#
      • 1...c5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(A)
      • Vars
        • B(b);N_GUARD::QAR(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • B(b);
  • Actual
    • S(D);
    • Threat
      • QAR1(A)
    • Vars
      • B(b);SBLOCK::QAB(A)
      • B(b);N_GUARD::QAR(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
      • P(d);N_GUARD::S(D)
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