MESON Chess Problem Database

Problem Display
PID: 240694 (4n1kr/7N/5P2/8/8/7Q/8/4K3 w - - 0 1)

Larsen, Lars Aksglade (= Aksglade, Lars)

Thema Danicum, 1989

4n1kr/7N/5P2/8/8/7Q/8/4K3

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • 1...Rxh7
        • 2.Qxe8#
      • 1...Sg7
        • 2.Qxg7#
      • 1...Sd6
        • 2.Qg7#
      • 1...Sc7
        • 2.Qg7#
      • 1...Sxf6!
  • Keys
    • 1.Qh5!
      • 1...Rxh7
        • 2.Qxe8#
      • 1...Sxf6
        • 2.Qg6#
      • 1...Sd6
        • 2.Qg6#
      • 1...Sc7
        • 2.Qg6#
      • 1...Sg7
        • 2.f7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Vars
        • R(c);SBLOCK,XS(D)::QAR2(B),XS(a)
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(a);N_GUARD::QAR1(B)
      • Refutation
        • S(a);XP(C)
  • Actual
    • Q(B);
    • Vars
      • R(c);SBLOCK,XS(D)::QAR2(B),XS(a)
      • S(a);N_GUARD,XP(C)::QAR2(B)
      • S(a);N_GUARD::QAR2(B)
      • S(a);SBLOCK::P(C)
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