MESON Chess Problem Database

Problem Display
PID: 261512 (K5bR/Np1n4/p6Q/P1k5/R2N1n2/1B6/4p1pb/8 w - - 0 1)

Vollenweider, Odette (aka Baumgartner, Gabriel)

Neue Zurcher Zeitung, 1964

K5bR/Np1n4/p6Q/P1k5/R2N1n2/1B6/4p1pb/8

#2

8 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Rc8#
    • 1...Bh7
      • 2.Rc8#
    • 1...Sd5
      • 2.Rc4#
    • 1...Se5
      • 2.Qf8#
      • 2.Qb6#
    • 1...Sb6+
      • 2.Qxb6#
    • 1...Sf6
      • 2.Qf8#
    • 1...Sb8
      • 2.Qf8#
      • 2.Qb6#
    • 1...Sf8
      • 2.Qxf8#
      • 2.Qb6#
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Qc6#
  • Tries
    • 1.Sdb5?
      • threat
        • 2.Qd6#
      • 1...Sb6+
        • 2.Qxb6#
      • 1...Be6
        • 2.Rc8#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sh3
        • 2.Qe3#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sh5
        • 2.Qe3#
      • 1...Se6
        • 2.Qc1#
      • 1...Sg6
        • 2.Qe3#
      • 1...Sf6
        • 2.Qf8#
      • 1...axb5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qd6#
      • 1...Sb6+
        • 2.Qxb6#
      • 1...Be6
        • 2.Rc8#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sh3
        • 2.Qe3#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sh5
        • 2.Qe3#
      • 1...Se6
        • 2.Qc1#
      • 1...Sg6
        • 2.Qe3#
      • 1...Sf6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • B(i);OGATE::R(H)
    • S(d);SBLOCK,S_CUTB(i)::R1(B)
    • S(h);CHECK,N_GUARD::QAB1(E),XS(h)
    • S(h);N_GUARD::QAB(E)
    • P(g);N_GUARD::QAR1(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • S(h);CHECK,N_GUARD::QAB1(E),XS(h)
        • B(i);OGATE::R(H)
        • S(d);OGATE::QAB(E)
        • S(d);SBLOCK,S_CUTB(i)::R1(B)
        • S(d);OGATE::QAR(E)
        • S(h);N_GUARD::QAB(E)
      • Refutation
        • P(f);XS(C)
  • Actual
    • S(C);
    • Threat
      • QAB1(E)
    • Vars
      • S(h);CHECK,N_GUARD::QAB1(E),XS(h)
      • B(i);OGATE::R(H)
      • S(d);OGATE::QAB(E)
      • S(d);SBLOCK,S_CUTB(i)::R1(B)
      • S(d);OGATE::QAR(E)
      • S(h);N_GUARD::QAB(E)
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