MESON Chess Problem Database

Problem Display
PID: 18667 (8/8/5NK1/8/3P1k2/2Q5/2P3Pn/5n2 w - - 0 1)

Maslar, Zdravko

Politika, 1957

(First published on Wed Jan 23 1957)

8/8/5NK1/8/3P1k2/2Q5/2P3Pn/5n2

#2

6 + 3

3976 FIDE Album (1956-1958) 1961
3310 2345 Chess Problems 1997
5454 Near Snap 2009
15522 Atelier 64 (Maslar) 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.g3#
    • 1...Se3
      • 2.Qc7#
    • 1...Sg3
      • 2.Qd2#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sg4
      • 2.Qf3#
  • Tries
    • 1.Sd5+?
      • 1...Kg4
        • 2.Qh3#
      • 1...Ke4!
    • 1.Sh5+?
      • 1...Kg4
        • 2.Qh3#
      • 1...Ke4!
    • 1.Qb3?
      • 1...Se3
        • 2.Qb8#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sd2
        • 2.g3#
      • 1...Sg4
        • 2.Qf3#
      • 1...Sg3!
    • 1.Qd3?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sd2
        • 2.g3#
      • 1...Sg3
        • 2.Qd2#
      • 1...Sg4
        • 2.Sd5#
        • 2.Sh5#
        • 2.Qf3#
      • 1...Se3!
    • 1.Qh3?
      • 1...Sg3
        • 2.Qh6#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Se3
        • 2.Qxh2#
      • 1...Sg4
        • 2.Qf3#
      • 1...Sd2!
  • Keys
    • 1.Qa3!
      • 1...Se3
        • 2.Qd6#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sd2
        • 2.g3#
      • 1...Sg3
        • 2.Qc1#
      • 1...Sg4
        • 2.Qf3#

This anticipates 108396(1975), 215664(1979)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::P(B)
    • S(a);SBLOCK::QAB(C)
    • S(a);N_GUARD,SBLOCK::QAB(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • S(a);SBLOCK::QAB(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(a);N_GUARD::P(B)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(a);N_GUARD::P(B)
        • S(a);N_GUARD,SBLOCK::QAB(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Vars
        • S(a);SBLOCK::QAB(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(a);N_GUARD,SBLOCK::QAB(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(a);
  • Actual
    • Q(C);
    • Vars
      • S(a);SBLOCK::QAB(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(a);N_GUARD::P(B)
      • S(a);N_GUARD,SBLOCK::QAB(C)
      • S(b);N_GUARD::QAR1(C)
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