MESON Chess Problem Database

Problem Display
PID: 246013 (8/8/p3K3/8/5NkN/8/5P2/4Q3 w - - 0 1)

Svitek, Miroslav

Kudesnik, 2008

8/8/p3K3/8/5NkN/8/5P2/4Q3

#2

5 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kf6?
      • 1...Kxf4
        • 2.Qb4#
      • 1...Kxh4
        • 2.f3#
      • 1...a5!
    • 1.Qg1+?
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kxf4!
    • 1.Qe3?
      • threat
        • 2.Qg3#
      • 1...Kxh4
        • 2.Qg3#
      • 1...Kg5!
    • 1.Qe5?
      • 1...Kxh4
        • 2.Qh5#
      • 1...a5!
    • 1.f3+?
      • 1...Kxf4
        • 2.Qe5#
      • 1...Kg5!
  • Keys
    • 1.Qa5!
      • 1...Kxf4
        • 2.Qf5#
      • 1...Kxh4
        • 2.Qh5#

Anticipated by 4617(1884)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR(A)
        • K(a);P-FLIGHT,XS(D)::QAB(A)+P(B)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • P(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(C)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT,XS(C)::QAR1(A)
      • K(a);P-FLIGHT,XS(D)::QAR1(A)
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