MESON Chess Problem Database

Problem Display
PID: 85854 (8/4k3/5N1K/3B4/3P4/8/1P6/7Q w - - 0 1)

Speckmann, Werner

British Chess Magazine, 1970

8/4k3/5N1K/3B4/3P4/8/1P6/7Q

#2

6 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kxf6
        • 2.Qe5#
        • 2.Qe6#
      • 1...Kf8
        • 2.Sd7#
        • 2.Sh7#
        • 2.Qe8#
      • 1...Kd8!
    • 1.Qc1?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kf8
        • 2.Qc5#
      • 1...Kd8!
    • 1.Qe1+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kxf6
        • 2.Qe5#
        • 2.Qe6#
      • 1...Kf8
        • 2.Sd7#
        • 2.Sh7#
        • 2.Qb4#
        • 2.Qe8#
      • 1...Kd8!
    • 1.Qh2?
      • 1...Kxf6
        • 2.Qe5#
      • 1...Kf8
        • 2.Qd6#
      • 1...Kd8!
    • 1.Qh5?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kxf6
        • 2.Qf7#
        • 2.Qe5#
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#
        • 2.Qe8#
      • 1...Kd8!
  • Keys
    • 1.Qh3!
      • 1...Kd6
        • 2.Qd7#
      • 1...Kxf6
        • 2.Qe6#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT,XS(E)::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT,XS(E)::QAR1(A)
      • K(a);S_FLIGHT::QAB(A)
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