MESON Chess Problem Database

Problem Display
PID: 72969 (N1k5/1pPp1ppp/7R/8/8/8/K3BR2/6Q1 w - - 0 1)

Koldijk, Albert Marinus

Tijdschrift vd KNSB, 1936

N1k5/1pPp1ppp/7R/8/8/8/K3BR2/6Q1

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Ba6#
    • 1...gxh6
      • 2.Qg8#
  • Tries
    • 1.Rxf7?
      • threat
        • 2.Rf8#
      • 1...b6
        • 2.Ba6#
      • 1...d5
        • 2.Sb6#
        • 2.Bg4#
        • 2.Qg4#
      • 1...d6
        • 2.Sb6#
        • 2.Bg4#
        • 2.Qg4#
      • 1...b5!
    • 1.Qc1?
      • threat
        • 2.Sb6#
      • 1...b6
        • 2.Ba6#
      • 1...b5!
  • Keys
    • 1.Qg6!
      • 1...fxg6
        • 2.Rf8#
      • 1...gxh6
        • 2.Qg8#
      • 1...hxg6
        • 2.Rh8#
      • 1...b5
        • 2.Qa6#
      • 1...b6
        • 2.Ba6#
      • 1...d5
        • 2.Qf5#
      • 1...d6
        • 2.Qf5#
      • 1...f5
        • 2.Qe8#
      • 1...f6
        • 2.Qe8#

There are these versions: 60872

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::B(C)
    • P(d);OGATE,XR(E)::QAR(A)
  • Tries
    • Try
      • R(D);XP(c)
      • Threat
        • R(D)
      • Vars
        • P(a);OGATEB::B(C)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • P(a);OGATEB::B(C)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Vars
      • P(c);OGATE,XQ(A)::R(D)
      • P(d);OGATE,XR(E)::QAR(A)
      • P(e);OGATE,XQ(A)::R(E)
      • P(a);OGATEB::QAB(A)
      • P(a);OGATEB::B(C)
      • P(b);OGATEB::QAB(A)
      • P(c);OGATE::QAR2(A)
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