MESON Chess Problem Database

Problem Display
PID: 85855 (8/k2N4/8/8/5K2/8/6Q1/8 w - - 0 1)

Speckmann, Werner

Karpati Igaz Szo, 1968

8/k2N4/8/8/5K2/8/6Q1/8

#2

3 + 1

6490 yacpdb 2009
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qb7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Kb6!
    • 1.Qf1?
      • 1...Ka8
        • 2.Qa6#
      • 1...Kb7!
    • 1.Qe2?
      • 1...Ka8
        • 2.Qa6#
      • 1...Kb7!
    • 1.Qg6?
      • 1...Ka8
        • 2.Qa6#
      • 1...Kb7!
  • Keys
    • 1.Qb2!
      • 1...Ka6
        • 2.Qb6#
      • 1...Ka8
        • 2.Qb8#

Anticipated by 182239(1906), 149372(1923), 46746(1967)

This anticipates 158191(1968), 249383(1971), 219432(1977), 245161(1997)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
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