MESON Chess Problem Database

Problem Display
PID: 235477 (8/4p3/3Q2pK/4p1p1/7k/5bpp/3p3b/5q2 w - - 0 1)

Speckmann, Werner

Schach, 1986

8/4p3/3Q2pK/4p1p1/7k/5bpp/3p3b/5q2

#2

2 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qxe5?
      • threat
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#
      • 1...g4
        • 2.Qg5#
      • 1...Qb5!
    • 1.Qxd2?
      • threat
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#
      • 1...g4
        • 2.Qg5#
      • 1...Qc1!
    • 1.Qf6?
      • threat
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#
      • 1...exf6!
    • 1.Qxg6?
      • threat
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#
      • 1...g4
        • 2.Qh5#
        • 2.Qg5#
      • 1...Qa6!
  • Keys
    • 1.Qxe7!
      • threat
        • 2.Qxg5#
      • 1...Kg4
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);XP(h)
      • 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(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);P_PINP(i)
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • K(g);N_SPINP(i),P-FLIGHT::QAR1(A),XP(i)
      • Refutation
        • P(k);N_SPINP(i),XQ(A)
    • Try
      • Q(A);XP(j)
      • Threat
        • QAB1(A),XP(i)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(i)::QAR1(A),XP(i)
      • Refutation
        • Q(a);P_PINQ(A)
  • Actual
    • Q(A);P_PINP(i),XP(k)
    • Threat
      • QAB1(A),XP(i)
    • Vars
      • K(g);N_SPINP(i),P-FLIGHT::QAR1(A),XP(i)
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