MESON Chess Problem Database

Problem Display
PID: 109764 (8/2p2N2/2Kp4/8/3k4/6Q1/1p1N1n2/1B1n4 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Shakhmatna misl, 1965

8/2p2N2/2Kp4/8/3k4/6Q1/1p1N1n2/1B1n4

#2

5 + 6

6490 yacpdb 2009
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qxf2#
    • 1...Se3
      • 2.Qg7#
    • 1...Sh1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sh3
      • 2.Qd3#
    • 1...Se4
      • 2.Qd3#
    • 1...Sg4
      • 2.Qd3#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Sb3#
        • 2.Sb5#
        • 2.Sf5#
      • 1...Se3
        • 2.Sb5#
        • 2.Qg7#
      • 1...Sd3
        • 2.Sb5#
      • 1...Sc3
        • 2.Sb3#
        • 2.Sf5#
      • 1...cxd6!
    • 1.Sh6?
      • threat
        • 2.Sf5#
      • 1...Se3
        • 2.Qg7#
      • 1...Sd3!
    • 1.Sd8?
      • threat
        • 2.Se6#
      • 1...Se3
        • 2.Qg7#
      • 1...Sd3!
    • 1.Qb3?
      • threat
        • 2.Sf3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc3!
    • 1.Qf3?
      • 1...Se3
        • 2.Qf6#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Qxf2#
      • 1...Sh1
        • 2.Qd3#
      • 1...Sh3
        • 2.Qd3#
      • 1...Se4
        • 2.Qd3#
      • 1...Sg4
        • 2.Qd3#
      • 1...d5!
  • Keys
    • 1.Qa3!
      • 1...Sc3
        • 2.Qa7#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se3
        • 2.Qxb2#
      • 1...Sh1
        • 2.Qd3#
      • 1...Sh3
        • 2.Qd3#
      • 1...Se4
        • 2.Qd3#
      • 1...Sg4
        • 2.Qd3#
      • 1...d5
        • 2.Qc5#

Anticipated by 96796(1918)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,SBLOCK::QAB(C),XS(c)
    • S(a);SBLOCK::QAB(C)
    • S(c);N_GUARD::QAR1(C)
    • S(c);N_GUARD::QAR1(C),XS(c)
    • P(e);N_GUARD::QAB1(C)
  • Tries
    • Try
      • S(E);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::S(E)
      • Refutation
        • P(f);XS(E)
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(a);SBLOCK::QAB(C)
      • Refutation
        • S(c);
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • S(a);SBLOCK::QAB(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • S(B)
      • Vars
        • S(c);N_GUARD::QAR1(C),XS(c)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Vars
        • S(a);SBLOCK::QAB(C)
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(a);N_GUARD,SBLOCK::QAB(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
      • Refutation
        • P(e);
  • Actual
    • Q(C);
    • Vars
      • S(a);SBLOCK::QAB(C)
      • S(c);N_GUARD::QAR1(C),XS(c)
      • S(a);N_GUARD,SBLOCK::QAB(C),XP(b)
      • S(c);N_GUARD::QAR1(C)
      • P(e);N_GUARD::QAB1(C)
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