MESON Chess Problem Database

Problem Display
PID: 85702 (8/N3p3/4Qp2/k4K2/8/2P5/P7/8 w - - 0 1)

Speckmann, Werner

Der neue Tag, 1978

8/N3p3/4Qp2/k4K2/8/2P5/P7/8

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Qa6#
  • Tries
    • 1.Ke4?
      • 1...Ka4
        • 2.Qa6#
      • 1...f5+!
    • 1.Kf4?
      • 1...Ka4
        • 2.Qa6#
      • 1...f5!
    • 1.Kg4?
      • 1...Ka4
        • 2.Qa6#
      • 1...f5+!
    • 1.Kg6?
      • 1...Ka4
        • 2.Qa6#
      • 1...f5!
    • 1.Sb5?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kxb5!
    • 1.Sc8?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kb5!
    • 1.Qb6+?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa6#
      • 1...Kxb6!
  • Keys
    • 1.a4!
      • 1...Kxa4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);CHECK
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);CHECK
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • P(b);
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT,XS(E)
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • P(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(A)::QAR2(D)
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