MESON Chess Problem Database

Problem Display
PID: 6621 (3Q4/8/8/1k2N3/4K3/2R5/8/8 w - - 0 1)

Manskopf, Johannes Karl Alvin Georg

Il Problema, 1932

3Q4/8/8/1k2N3/4K3/2R5/8/8

#2

4 + 1

3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6?
      • threat
        • 2.Qa5#
      • 1...Ka4
        • 2.Qa5#
      • 1...Ka6!
    • 1.Ra3?
      • threat
        • 2.Qa5#
      • 1...Kb4
        • 2.Qa5#
      • 1...Kc5!
    • 1.Rb3+?
      • 1...Kc5
        • 2.Qb6#
        • 2.Qc7#
        • 2.Qe7#
        • 2.Qd4#
        • 2.Qd5#
        • 2.Qf8#
      • 1...Ka6
        • 2.Qb6#
        • 2.Qa8#
      • 1...Ka4!
    • 1.Qb8+?
      • 1...Ka5
        • 2.Ra3#
      • 1...Ka6
        • 2.Ra3#
      • 1...Ka4!
  • Keys
    • 1.Sc4!
      • 1...Ka4
        • 2.Qa5#
      • 1...Kb4
        • 2.Qa5#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kc6
        • 2.Sd6#

This anticipates 41413(1935), 197826(1944), 12216(1976)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);P-FLIGHT::R(A)
        • K(a);S_FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);P-FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::R(A)+S(C)
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