MESON Chess Problem Database

Problem Display
PID: 4630 (8/8/3Q4/3b4/3k4/3N4/3K4/8 w - - 0 1)

Wiehe, Christian

Nationaltidende, 1884

8/8/3Q4/3b4/3k4/3N4/3K4/8

#2

3 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2007
3713 Snap 2008
136 Problem Observer 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qb4#
    • 1...Ke4
      • 2.Qf4#
  • Tries
    • 1.Kc2?
      • 1...Kc4
        • 2.Qb4#
        • 2.Qc5#
      • 1...Ke4
        • 2.Qf4#
      • 1...Ke3!
    • 1.Ke2?
      • 1...Kc4
        • 2.Qb4#
      • 1...Ke4
        • 2.Qf4#
        • 2.Qe5#
      • 1...Kc3!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Sb2#
        • 2.Se5#
        • 2.Qb4#
      • 1...Ke4!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sc5#
        • 2.Qf4#
      • 1...Kc4!
  • Keys
    • 1.Qd7!
      • 1...Kc4
        • 2.Qa4#
      • 1...Ke4
        • 2.Qg4#

Anticipated by 2709(0000)

This anticipates 73187(1921), 79357(1964)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(C);CHECK,N_PINB(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINB(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT::QAR2(C)
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