MESON Chess Problem Database

Problem Display
PID: 6641 (8/Q7/1pkP4/5N2/3K4/8/1N6/8 w - - 0 1)

Meinartz, F

Magyar Sakkvilag, 1932

8/Q7/1pkP4/5N2/3K4/8/1N6/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Qa4#
    • 1...b5
      • 2.Qc7#
  • Tries
    • 1.Sd1?
      • 1...b5
        • 2.Qc7#
      • 1...Kb5!
    • 1.Sd3?
      • 1...b5
        • 2.Sb4#
        • 2.Se5#
        • 2.Qc7#
      • 1...Kb5!
    • 1.Sa4?
      • 1...b5
        • 2.Qc7#
      • 1...Kb5!
    • 1.Sc4?
      • 1...b5
        • 2.Sa5#
        • 2.Se5#
        • 2.Se7#
        • 2.Qc7#
      • 1...Kb5!
    • 1.Se3?
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.Qc7#
      • 1...Kxd6!
    • 1.Sg3?
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.Qc7#
      • 1...Kxd6!
    • 1.Sh4?
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.Qc7#
      • 1...Kxd6!
    • 1.Sh6?
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.Qc7#
      • 1...Kxd6!
    • 1.Se7+?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kxd6!
    • 1.Sg7?
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.Qc7#
      • 1...Kxd6!
    • 1.Qe7?
      • 1...b5
        • 2.Qc7#
      • 1...Kb5!
    • 1.Qf7?
      • 1...b5
        • 2.Qc7#
      • 1...Kb5!
    • 1.Qg7?
      • 1...b5
        • 2.Qc7#
      • 1...Kb5!
    • 1.Qh7?
      • 1...b5
        • 2.Qc7#
      • 1...Kb5!
    • 1.Qa8+?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd7!
  • Keys
    • 1.d7!
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.d8S#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(E)
    • P(a);SBLOCK::QAR1(E)
  • Tries
    • Try
      • S(A);
      • Vars
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • Q(E);
      • Vars
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(a);SBLOCK::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • P(a);SBLOCK::P=S
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