MESON Chess Problem Database

Problem Display
PID: 85819 (8/5K2/8/6kN/8/4pPN1/4Q3/8 w - - 0 1)

Speckmann, Werner

Problem (Zagreb), 1967

8/5K2/8/6kN/8/4pPN1/4Q3/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Se4+?
      • 1...Kh4
        • 2.Qh2#
      • 1...Kf5
        • 2.Qb5#
      • 1...Kxh5
        • 2.Qh2#
      • 1...Kh6!
    • 1.Qb2?
      • threat
        • 2.Qf6#
      • 1...Kh6
        • 2.Qg7#
      • 1...Kh4!
  • Keys
    • 1.Sf5!
      • 1...Kxf5
        • 2.Qb5#
      • 1...Kxh5
        • 2.f4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • K(b);P-FLIGHT::QAR(A)
        • K(b);P-FLIGHT,XS(D)::QAR(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XS(C)::QAR(A)
      • K(b);P-FLIGHT,XS(D)::QAB(A)+P(B)
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