MESON Chess Problem Database

Problem Display
PID: 114270 (8/3p1p2/5p2/1K1k1Nn1/8/4Q3/4P3/B7 w - - 0 1)

Azerbajevs, Erkoli

Sovietskaya molodez, 1954

8/3p1p2/5p2/1K1k1Nn1/8/4Q3/4P3/B7

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Qb3#
    • 1...Se6
      • 2.Qf3#
    • 1...d6
      • 2.Se7#
  • Tries
    • 1.Bxf6?
      • threat
        • 2.Qe5#
      • 1...Se4
        • 2.Qb3#
      • 1...d6
        • 2.Se7#
      • 1...Sf3!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Sg3#
        • 2.Sd6#
      • 1...Ke6!
    • 1.Qc5+?
      • 1...Ke6
        • 2.Sd4#
        • 2.Sg7#
      • 1...Ke4!
  • Keys
    • 1.Qe8!
      • 1...Se6
        • 2.Qa8#
      • 1...Sf3
        • 2.e4#
      • 1...Sh3
        • 2.e4#
      • 1...Se4
        • 2.Qxf7#
      • 1...Sh7
        • 2.e4#
      • 1...d6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::QAB(C)
    • S(b);N_GUARD,SBLOCK::QAB(C)
    • P(d);SBLOCK::S(E)
  • Tries
    • Try
      • B(A);XP(c)
      • Threat
        • QAR1(C)
      • Vars
        • S(b);SBLOCK::QAB(C)
        • P(d);SBLOCK::S(E)
      • Refutation
        • S(b);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • S(b);SBLOCK::QAB(C)
      • S(b);N_GUARD::P(B)
      • S(b);N_GUARD,SBLOCK::QAB(C),XP(e)
      • P(d);SBLOCK::S(E)
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Developed and maintained by Brian Stephenson.
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