MESON Chess Problem Database

Problem Display
PID: 234855 (n7/rpp4p/bpB4Q/1n1N1PBK/2k5/1N6/P3P3/8 w - - 0 1)

Groeneveld, Cornelis

Problemas, 1992

n7/rpp4p/bpB4Q/1n1N1PBK/2k5/1N6/P3P3/8

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...bxc6
      • 2.Qxc6#
  • Tries
    • 1.Be3?
      • threat
        • 2.Sd2#
      • 1...bxc6
        • 2.Qxc6#
      • 1...Sd4!
    • 1.Qf6?
      • 1...bxc6
        • 2.Qxc6#
      • 1...Sc3
        • 2.Qxc3#
        • 2.Qd4#
      • 1...Sa3
        • 2.Qc3#
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sd6
        • 2.Qc3#
        • 2.Qd4#
      • 1...h6!
  • Keys
    • 1.Be7!
      • 1...bxc6
        • 2.Qxc6#
      • 1...Sc3
        • 2.Se3#
      • 1...Sa3
        • 2.Qf4#
      • 1...Sd4
        • 2.Sd2#
      • 1...Sd6
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATE,XB(H)::QAR2(I),XP(f)
  • Tries
    • Try
      • B(F);
      • Threat
        • S(C)
      • Vars
        • P(f);OGATE,XB(H)::QAR2(I),XP(f)
      • Refutation
        • S(b);
    • Try
      • Q(I);
      • Vars
        • P(f);OGATE,XB(H)::QAR2(I),XP(f)
        • S(b);N_GUARD::QAR1(I),XS(b)
      • Refutation
        • P(h);
  • Actual
    • B(F);
    • Vars
      • P(f);OGATE,XB(H)::QAR2(I),XP(f)
      • S(b);SBLOCK::S(D)
      • S(b);N_GUARD::QAR(I)
      • S(b);SBLOCK::S(C)
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