MESON Chess Problem Database

Problem Display
PID: 85833 (8/6pK/3p2p1/7k/3Q1ppp/3p3b/5q2/8 w - - 0 1)

Speckmann, Werner

Schach, 1984

8/6pK/3p2p1/7k/3Q1ppp/3p3b/5q2/8

#2

2 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qf6?
      • threat
        • 2.Qxg6#
      • 1...g5
        • 2.Qg6#
      • 1...gxf6!
    • 1.Qxg7?
      • threat
        • 2.Qh6#
        • 2.Qxg6#
      • 1...Kg5
        • 2.Qxg6#
      • 1...g3
        • 2.Qxg6#
      • 1...g5
        • 2.Qh6#
        • 2.Qg6#
        • 2.Qf7#
      • 1...Qa7!
    • 1.Qxd3?
      • threat
        • 2.Qxg6#
      • 1...Kg5
        • 2.Qxg6#
      • 1...g5
        • 2.Qg6#
      • 1...Qc2!
    • 1.Qxd6?
      • threat
        • 2.Qxg6#
      • 1...Kg5
        • 2.Qe5#
        • 2.Qxg6#
      • 1...g5
        • 2.Qg6#
      • 1...Qb6!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qxg6#
      • 1...Kg5
        • 2.Qxg6#
      • 1...g5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • P(i);::QAB1(A)
      • Refutation
        • P(j);XQ(A)
    • Try
      • Q(A);XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(i)::QAR1(A),XP(i)
        • P(e);::QAB1(A),XP(i)
      • Refutation
        • Q(a);P_PINQ(A)
    • Try
      • Q(A);XP(b)
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • K(g);P-FLIGHT::QAR1(A),XP(i)
        • P(i);::QAB1(A)
      • Refutation
        • Q(a);
    • Try
      • Q(A);XP(h)
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • P(i);::QAB1(A)
      • Refutation
        • Q(a);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(i)
    • Vars
      • K(g);P-FLIGHT::QAR1(A),XP(i)
      • P(i);::QAB1(A)
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