MESON Chess Problem Database

Problem Display
PID: 82113 (8/B2pQ1n1/7r/nB1k4/2p5/2KPpP2/7p/5b1q w - - 0 1)

Ahues, Herbert Siegfried Oskar

El Ajedrez Espanol, 1964

8/B2pQ1n1/7r/nB1k4/2p5/2KPpP2/7p/5b1q

#2

6 + 10

23 Die Schwalbe 1966
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qe4#
    • 1...Re6
      • 2.Qc5#
    • 1...Sc6
      • 2.Bxc4#
    • 1...d6
      • 2.Qe4#
  • Tries
    • 1.d4?
      • threat
        • 2.Qe5#
      • 1...Rh5
        • 2.Qxd7#
      • 1...Re6
        • 2.Qc5#
      • 1...Se6
        • 2.Qxd7#
      • 1...d6
        • 2.Qe4#
      • 1...Sc6!
    • 1.f4?
      • threat
        • 2.Qe5#
      • 1...Qe4
        • 2.dxe4#
      • 1...Rh5
        • 2.Qxd7#
      • 1...Re6
        • 2.Qc5#
      • 1...Sc6
        • 2.Bxc4#
      • 1...Se6
        • 2.Qxd7#
      • 1...d6!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qe5#
      • 1...Rh5
        • 2.Qxd7#
      • 1...Re6
        • 2.Qc5#
      • 1...Sc6
        • 2.Bxc4#
      • 1...Se6
        • 2.Qxd7#
      • 1...d6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(h);SBLOCK::QAB1(F)
    • R(h);SBLOCK::QAR1(F)
    • S(f);N_GUARD,SBLOCK::B(D),XP(e)
    • P(i);SBLOCK::QAB1(F)
  • Tries
    • Try
      • P(B);
      • Threat
        • QAR1(F)
      • Vars
        • R(h);N_GUARD::QAR2(F),XP(i)
        • R(h);SBLOCK::QAR1(F)
        • S(j);S_CUTR(h)::QAR2(F),XP(i)
        • P(i);SBLOCK::QAB1(F)
      • Refutation
        • S(f);
    • Try
      • P(C);
      • Threat
        • QAR1(F)
      • Vars
        • Q(b);OGATE::P(B),XQ(b)
        • R(h);N_GUARD::QAR2(F),XP(i)
        • R(h);SBLOCK::QAR1(F)
        • S(f);N_GUARD,SBLOCK::B(D),XP(e)
        • S(j);S_CUTR(h)::QAR2(F),XP(i)
      • Refutation
        • P(i);
  • Actual
    • B(E);
    • Threat
      • QAR1(F)
    • Vars
      • R(h);N_GUARD::QAR2(F),XP(i)
      • R(h);SBLOCK::QAR1(F)
      • S(f);N_GUARD,SBLOCK::B(D),XP(e)
      • S(j);S_CUTR(h)::QAR2(F),XP(i)
      • P(i);SBLOCK::QAB1(F)
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