MESON Chess Problem Database

Problem Display
PID: 106259 (8/8/K7/4N3/4N3/1k6/4P3/Q7 w - - 0 1)

Lokker, Miklosh S

Karacsonyi lap, 1967

8/8/K7/4N3/4N3/1k6/4P3/Q7

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2+?
      • 1...Kb4
        • 2.Sd3#
        • 2.Qa5#
      • 1...Kc2!
    • 1.Sc5+?
      • 1...Kb4
        • 2.Qa5#
      • 1...Kc2!
    • 1.Qb2+?
      • 1...Ka4
        • 2.Sc3#
        • 2.Sc5#
      • 1...Kxb2!
    • 1.Qc3+?
      • 1...Ka4
        • 2.Sc5#
      • 1...Ka2!
    • 1.Qa2+?
      • 1...Kb4
        • 2.Sd3#
        • 2.Sc6#
      • 1...Kxa2!
  • Keys
    • 1.Sc6!
      • 1...Kc2
        • 2.Sd4#
      • 1...Kc4
        • 2.Qa2#

Anticipated by 115453(1911)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::S(D)
      • K(a);S_FLIGHT::QAB(A)
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