MESON Chess Problem Database

Problem Display
PID: 249890 (2B4k/2P2K1p/7P/4N3/8/3r4/8/7Q w - - 0 1)

Aschemann, Ralf

Deutsche Schachzeitung, 1978

2B4k/2P2K1p/7P/4N3/8/3r4/8/7Q

#2

6 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.cxd8Q#
      • 2.cxd8R#
  • Keys
    • 1.Qa8!
      • threat
        • 2.Bd7#
      • 1...Rf3+
        • 2.Bf5#
      • 1...Rd7+
        • 2.Bxd7#
      • 1...Ra3
        • 2.Ba6#
      • 1...Rb3
        • 2.Bb7#
      • 1...Rg3
        • 2.Bg4#
      • 1...Rd8
        • 2.cxd8Q#
        • 2.cxd8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::PXR(a)=Q
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+B(F)
    • Vars
      • R(a);CHECK,N_GUARD::QAR(A)+B(F)
      • R(a);CHECK::QAR(A)+B(F),XR(a)
      • R(a);N_GUARD::QAR(A)+B(F)
      • R(a);OGATE::PXR(a)=Q
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