MESON Chess Problem Database

Problem Display
PID: 91940 (2B1N3/8/4n1p1/4kP1p/1nQ1N3/6P1/8/1K4b1 w - - 0 1)

Kupper, Josef

Schweizerische Schachzeitung, 2007

2B1N3/8/4n1p1/4kP1p/1nQ1N3/6P1/8/1K4b1

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qxe6#
    • 1...Bd4
      • 2.Qxe6#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qe4#
      • 1...Kxf5
        • 2.Qf4#
      • 1...Bd4
        • 2.Qxe6#
      • 1...Sd4
        • 2.Qc7#
      • 1...Sc5
        • 2.Qf4#
      • 1...Sg5
        • 2.Qf4#
      • 1...gxf5!
  • Keys
    • 1.S4f6!
      • threat
        • 2.Qe4#
      • 1...Kxf5
        • 2.Qf4#
      • 1...gxf5
        • 2.Sd7#
      • 1...Sd4
        • 2.Qc7#
      • 1...Bd4
        • 2.Qxe6#
      • 1...Sc5
        • 2.Qf4#
      • 1...Sg5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,P_SPINS(e),XP(E)::QAB1(C),XS(e)
    • B(a);SBLOCK::QAR1(C),XS(e)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(C)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(e),XP(E)::QAR1(C)
        • B(a);SBLOCK::QAR1(C),XS(e)
        • S(e);N_GUARD,SBLOCK::QAB(C)
        • S(e);N_GUARD::QAB1(C)
      • Refutation
        • P(f);XP(E)
  • Actual
    • S(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(c);P-FLIGHT,P_SPINS(e),XP(E)::QAR1(C)
      • P(f);SBLOCK,XP(E)::S(D)
      • S(e);N_GUARD,SBLOCK::QAB(C)
      • B(a);SBLOCK::QAR1(C),XS(e)
      • S(e);N_GUARD::QAB1(C)
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