MESON Chess Problem Database

Problem Display
PID: 242687 (8/3B4/pp1P4/p7/N1k1P3/B7/KQpr1b2/nnNr4 w - - 0 1)

Hartong, Jan

Norsk Sjakkblad, 1951

8/3B4/pp1P4/p7/N1k1P3/B7/KQpr1b2/nnNr4

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxb6#
    • 1...Be1
      • 2.Sxb6#
    • 1...Bg3
      • 2.Sxb6#
    • 1...Bd4
      • 2.Be6#
    • 1...Bh4
      • 2.Sxb6#
    • 1...Sxa3
      • 2.Qc3#
    • 1...Sc3+
      • 2.Qxc3#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Sb2#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sxa3
        • 2.Qc3#
      • 1...Bd4
        • 2.Be6#
        • 2.Qd5#
        • 2.Qe6#
      • 1...Rd4!
    • 1.Qf6?
      • threat
        • 2.Sb2#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sxa3
        • 2.Qc3#
      • 1...Bd4
        • 2.Qe6#
        • 2.Qf7#
      • 1...Rd4!
    • 1.Qg7?
      • threat
        • 2.Sb2#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sxa3
        • 2.Qc3#
      • 1...Bd4
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rd4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Sb2#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sxa3
        • 2.Qc3#
      • 1...Rd4
        • 2.Qc8#
      • 1...Bd4
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • R(e);S_CUTB(f)::S(E),XP(j)
    • B(f);N_GUARD::S(E),XP(j)
    • B(f);S_CUTR(e)::B(H)
    • S(b);N_GUARD,XB(D)::QAR1(C)
    • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
  • Tries
    • Try
      • Q(C);
      • Threat
        • S(E)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD,XB(D)::QAR1(C)
      • Refutation
        • R(e);
    • Try
      • Q(C);
      • Threat
        • S(E)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD,XB(D)::QAR1(C)
      • Refutation
        • R(e);
    • Try
      • Q(C);
      • Threat
        • S(E)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD,XB(D)::QAR1(C)
      • Refutation
        • R(e);
  • Actual
    • Q(C);
    • Threat
      • S(E)
    • Vars
      • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD,XB(D)::QAR1(C)
      • R(e);SBLOCK,S_CUTB(f)::QAR(C)
      • B(f);SBLOCK,S_CUTR(e)::QAB(C)
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