MESON Chess Problem Database

Problem Display
PID: 249564 (8/8/1p1p4/P1k1N3/1p1p4/2N5/2Q2K2/8 w - - 0 1)

Aschemann, Ralf

Deutsche Schachzeitung, 1978

8/8/1p1p4/P1k1N3/1p1p4/2N5/2Q2K2/8

#2

5 + 5

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...bxc3
        • 2.Qc4#
      • 1...dxc3
        • 2.Qc4#
      • 1...dxe5
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...b5
        • 2.Se4#
        • 2.Qd5#
      • 1...bxa5!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qc4#
        • 2.Qd5#
      • 1...bxc3
        • 2.Qc4#
      • 1...dxc3
        • 2.Qc4#
      • 1...bxa5
        • 2.Qxa5#
      • 1...dxe5
        • 2.Qd5#
      • 1...b3
        • 2.Qa3#
      • 1...d5
        • 2.Qxd5#
      • 1...b5
        • 2.Se4#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XS(C)::QAR1(A)
        • P(b);XS(C)::QAR1(A)
        • P(e);XS(E)::QAR1(A)
        • P(e);::QAR1(A),XP(e)
      • Refutation
        • P(d);XP(D)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);XS(C)::QAR1(A)
      • P(b);XS(C)::QAR1(A)
      • P(d);OGATE,XP(D)::QAR2(A),XP(d)
      • P(e);XS(E)::QAR1(A)
      • P(a);OGATEB::QAB(A)
      • P(e);::QAR1(A),XP(e)
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Developed and maintained by Brian Stephenson.
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