MESON Chess Problem Database

Problem Display
PID: 39215 (8/8/8/K1pp4/2k5/4Q3/1n2P3/2N5 w - - 0 1)

Lindner, Laszlo

Magyar Hirlap, 1932

8/8/8/K1pp4/2k5/4Q3/1n2P3/2N5

#2

4 + 4

4080 Mattbilder eines Lebens 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...d4
      • 2.Qb3#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd2#
      • 1...Sd3
        • 2.Qxd3#
      • 1...d4!
    • 1.Qd2?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...d4!
    • 1.Qa3?
      • 1...Sd1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...d4
        • 2.Qb3#
      • 1...Kd4!
    • 1.Qf3?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...d4
        • 2.Qb3#
      • 1...Kd4!
    • 1.Qg3?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...d4
        • 2.Qb3#
      • 1...Kd4!
    • 1.Qh3?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...d4
        • 2.Qb3#
      • 1...Kd4!
  • Keys
    • 1.Sa2!
      • threat
        • 2.Qc3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...d4
        • 2.Qe6#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • P(d);SBLOCK::QAB1(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C)
        • S(a);N_GUARD::QAB1(C),XS(a)
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
        • P(d);SBLOCK::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAR1(C)
    • Vars
      • S(a);N_GUARD::QAB1(C),XS(a)
      • P(d);OGATEB,SBLOCK::QAB(C)
      • S(a);N_GUARD::QAB1(C)
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