MESON Chess Problem Database

Problem Display
PID: 123450 (k7/8/1KN5/8/8/4p1n1/8/5nQ1 w - - 0 1)

Lokker, Miklosh S

Zemedelske noviny, 1966

k7/8/1KN5/8/8/4p1n1/8/5nQ1

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qa1#
    • 1...Sh2
      • 2.Qa1#
    • 1...Sh1
      • 2.Qg8#
    • 1...Se2
      • 2.Qg8#
    • 1...Se4
      • 2.Qg8#
    • 1...Sf5
      • 2.Qg8#
    • 1...Sh5
      • 2.Qg8#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qa2#
        • 2.Qf8#
      • 1...Sd2
        • 2.Qf8#
      • 1...Se2
        • 2.Qf8#
      • 1...Sf5
        • 2.Qa2#
      • 1...e2
        • 2.Qf8#
      • 1...exf2!
    • 1.Qh2?
      • threat
        • 2.Qa2#
        • 2.Qh8#
      • 1...Sd2
        • 2.Qh8#
      • 1...Se2
        • 2.Qb8#
        • 2.Qh8#
      • 1...Sh5
        • 2.Qb8#
        • 2.Qa2#
      • 1...e2
        • 2.Qh8#
      • 1...Sxh2!
    • 1.Qxe3?
      • threat
        • 2.Qa3#
        • 2.Qe8#
      • 1...Se4
        • 2.Qa3#
      • 1...Sxe3!
    • 1.Qxf1?
      • threat
        • 2.Qa6#
        • 2.Qa1#
        • 2.Qf8#
      • 1...Se2
        • 2.Qa1#
        • 2.Qf8#
      • 1...Sf5
        • 2.Qa6#
        • 2.Qa1#
      • 1...e2
        • 2.Qa1#
        • 2.Qf8#
      • 1...Sxf1!
  • Keys
    • 1.Kc7!
      • 1...Sd2
        • 2.Qa1#
      • 1...Sh2
        • 2.Qa1#
      • 1...Sh1
        • 2.Qg8#
      • 1...Se2
        • 2.Qg8#
      • 1...Se4
        • 2.Qg8#
      • 1...Sf5
        • 2.Qg8#
      • 1...Sh5
        • 2.Qg8#
      • 1...e2
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::QAB(A)
    • S(c);OGATE::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR(A)
        • S(c);::QAR(A)
        • P(b);::QAR(A)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(A)
        • P(b);::QAB1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAR(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);XS(a)
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);XQ(A)
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • S(a);OGATE::QAB(A)
      • S(c);OGATE::QAR(A)
      • P(b);OGATE::QAR1(A)
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