MESON Chess Problem Database

Problem Display
PID: 223086 (r6r/6Q1/kP6/8/7p/1R6/7K/8 w - - 0 1)

Hulsen, Bernhard

Dresdner Nachrichten, 1886

r6r/6Q1/kP6/8/7p/1R6/7K/8

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qa1#
    • 1...Ra7
      • 2.Qxa7#
    • 1...Rab8
      • 2.Qa7#
    • 1...Rac8
      • 2.Qa7#
    • 1...Rad8
      • 2.Qa7#
    • 1...Rae8
      • 2.Qa7#
    • 1...Raf8
      • 2.Qa7#
    • 1...Rag8
      • 2.Qa7#
  • Keys
    • 1.b7!
      • threat
        • 2.Qa1#
      • 1...Ka5
        • 2.Qa1#
      • 1...Ka7
        • 2.b8S#
      • 1...Rh5
        • 2.bxa8Q#
        • 2.bxa8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(b);P-FLIGHT::QAR(D)
    • R(c);N_GUARD::QAR1(D),XR(c)
    • R(c);N_GUARD::QAR1(D)
  • Actual
    • P(C);
    • Threat
      • QAR(D)
    • Vars
      • K(b);P-FLIGHT::QAR(D)
      • K(b);P-FLIGHT::P=S
      • R(d);N_GUARD,SBLOCK::PXR(c)=Q
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