MESON Chess Problem Database

Problem Display
PID: 101660 (Bb6/1N2n3/4p3/4knK1/8/3Q4/8/8 w - - 0 1)

Paule, M

diagrammes, 1990

Bb6/1N2n3/4p3/4knK1/8/3Q4/8/8

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • threat
        • 2.Sc4#
      • 1...Sd6
        • 2.Qc3#
      • 1...Se3!
    • 1.Sc5?
      • threat
        • 2.Sd7#
      • 1...Sd4
        • 2.Qg3#
      • 1...Sd5!
    • 1.Sd8?
      • threat
        • 2.Sf7#
      • 1...Sd6
        • 2.Qc3#
      • 1...Sh6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sc4#
        • 2.Sf7#
      • 1...Bxd6
        • 2.Qe4#
      • 1...Sxd6
        • 2.Qc3#
      • 1...Se3
        • 2.Sf7#
      • 1...Sh6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • S(d);
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD,SBLOCK::QAB(A)
      • Refutation
        • S(b);
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • B(e);SBLOCK,XS(C)::QAR1(A)
      • S(b);N_GUARD,SBLOCK,XS(C)::QAB(A)
      • S(b);::S(C)
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