MESON Chess Problem Database

Problem Display
PID: 82245 (4R3/nK4p1/1B1pP3/3k4/Q1NNp1r1/2n1p2B/8/b1R5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

3rd Prize, Schweizerische Schachzeitung, 1982

4R3/nK4p1/1B1pP3/3k4/Q1NNp1r1/2n1p2B/8/b1R5

#2

9 + 9

328 Schweizerische Schachzeitung 1984
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sc8
      • 2.Qc6#
  • Tries
    • 1.Kxa7?
      • threat
        • 2.Qc6#
      • 1...Sb5+
        • 2.Qxb5#
      • 1...Sxa4!
    • 1.Sc2?
      • threat
        • 2.S2xe3#
      • 1...Sd1
        • 2.Sb4#
      • 1...e2
        • 2.S2e3#
      • 1...Rg3!
    • 1.Sf5?
      • threat
        • 2.Sfxe3#
      • 1...Rg3
        • 2.Se7#
      • 1...e2
        • 2.Sfe3#
      • 1...Sd1!
    • 1.Bxa7?
      • threat
        • 2.Qc6#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sxa4!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sxe3#
      • 1...Sxc6
        • 2.Qxc6#
      • 1...Rg3
        • 2.Se7#
      • 1...Sd1
        • 2.Sb4#
      • 1...e2
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(h);N_GUARD::QAB1(C),XS(h)
    • S(h);N_GUARD::QAB1(C)
  • Tries
    • Try
      • K(H);P-FLIGHT,XS(h)
      • Threat
        • QAB1(C)
      • Vars
        • S(b);CHECK,N_GUARD::QAR2(C),XS(b)
      • Refutation
        • S(b);XQ(C)
    • Try
      • S(E);
      • Threat
        • S(E),XP(c)
      • Vars
        • S(b);::S(E)
        • P(c);::S(E)
      • Refutation
        • R(e);
    • Try
      • S(E);
      • Threat
        • S(E),XP(c)
      • Vars
        • R(e);::S(E)
        • P(c);::S(E)
      • Refutation
        • S(b);
    • Try
      • B(F);XS(h)
      • Threat
        • QAB1(C)
      • Vars
        • S(b);N_GUARD::QAR2(C),XS(b)
      • Refutation
        • S(b);XQ(C)
  • Actual
    • S(E);
    • Threat
      • S(D),XP(c)
    • Vars
      • S(h);OGATE,XS(E)::QAB1(C),XS(h)
      • R(e);::S(E)
      • S(b);::S(E)
      • P(c);::S(D)
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