MESON Chess Problem Database

Problem Display
PID: 31057 (8/4Q1N1/4P3/3kp3/8/p2N2P1/p7/K5B1 w - - 0 1)

Dubbe, Friedrich

Deutsches Wochenschach, 1898

8/4Q1N1/4P3/3kp3/8/p2N2P1/p7/K5B1

#2

7 + 4

3429 Friedrich Dubbe ein Deutscher Problemmeister 1938

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qd7#
    • 1...e4
      • 2.Qc5#
  • Tries
    • 1.Se1?
      • 1...Ke4
        • 2.Qb7#
      • 1...Kc6
        • 2.Qd7#
      • 1...e4
        • 2.Qc5#
      • 1...Kc4!
    • 1.Sb2?
      • 1...Ke4
        • 2.Qb7#
      • 1...Kc6
        • 2.Qd7#
      • 1...e4
        • 2.Qc5#
      • 1...axb2+!
    • 1.Sb4+?
      • 1...Ke4
        • 2.Qb7#
      • 1...Kc4!
    • 1.Qb4?
      • 1...e4
        • 2.Qc5#
      • 1...Kc6!
    • 1.Qb7+?
      • 1...Kd6
        • 2.Bc5#
        • 2.Qd7#
      • 1...Kc4!
    • 1.Qc7?
      • 1...e4
        • 2.Sb4#
        • 2.Sf4#
        • 2.Qc5#
      • 1...Ke4!
  • Keys
    • 1.Sc1!
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4
        • 2.Qb7#
      • 1...Kc6
        • 2.Qd7#
      • 1...e4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(F)
    • P(d);SBLOCK::QAR1(F)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(c);S_FLIGHT::QAB(F)
        • K(c);S_FLIGHT::QAB1(F)
        • P(d);SBLOCK::QAR1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(c);S_FLIGHT::QAB(F)
        • K(c);S_FLIGHT::QAB1(F)
        • P(d);SBLOCK::QAR1(F)
      • Refutation
        • P(b);CHECK,XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • P(d);SBLOCK::QAR1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(F);
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(c);S_FLIGHT::QAR1(F)
      • K(c);S_FLIGHT::QAB(F)
      • K(c);S_FLIGHT::QAB1(F)
      • P(d);SBLOCK::QAR1(F)
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