MESON Chess Problem Database

Problem Display
PID: 171078 (8/Q7/6NP/6k1/6P1/8/3K2R1/8 w - - 0 1)

Schattner, Richard

Die Rheinpfalz, 1971

8/Q7/6NP/6k1/6P1/8/3K2R1/8

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg6
      • 2.Qg7#
  • Tries
    • 1.Qd4?
      • 1...Kxg6
        • 2.Qg7#
      • 1...Kxh6!
    • 1.Qa1?
      • 1...Kxg6
        • 2.Qg7#
      • 1...Kxh6!
    • 1.Qd7?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kxg6
        • 2.Qg7#
      • 1...Kxh6!
    • 1.Qe7+?
      • 1...Kxg6
        • 2.Qg7#
      • 1...Kxh6!
  • Keys
    • 1.Sf4!
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qe7#
      • 1...Kf6
        • 2.Qg7#
      • 1...Kxh6
        • 2.g5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(F)
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
  • Actual
    • S(D);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(F)
      • K(a);S_FLIGHT::QAB(F)
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);OGATE,S_FLIGHT,XP(E)::P(C)
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