MESON Chess Problem Database

Problem Display
PID: 41852 (7K/8/1p6/3nP3/N5N1/1p1kPp2/b2n4/B1QB4 w - - 0 1)

Strerath, Otto

Schach-Express, 1948

7K/8/1p6/3nP3/N5N1/1p1kPp2/b2n4/B1QB4

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Sf2#
    • 1...Sf1
      • 2.Sf2#
    • 1...Sc4
      • 2.Sf2#
    • 1...Se4
      • 2.Sb2#
    • 1...Sxe3
      • 2.Sf2#
    • 1...b2
      • 2.Qc2#
    • 1...b5
      • 2.Sc5#
  • Tries
    • 1.Bxf3?
      • threat
        • 2.Sb2#
      • 1...Sxe3
        • 2.Sf2#
        • 2.Qc3#
      • 1...Sc4
        • 2.Sf2#
      • 1...b2
        • 2.Sxb2#
      • 1...Sxf3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxd5#
      • 1...Ke4
        • 2.Qg6#
      • 1...Sxe3
        • 2.Sf2#
      • 1...Sc3
        • 2.Sb2#
      • 1...Sb4
        • 2.Sb2#
      • 1...Sf4
        • 2.Sb2#
      • 1...Sf6
        • 2.Sb2#
      • 1...Sc7
        • 2.Sb2#
      • 1...Se7
        • 2.Sb2#
      • 1...b2
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • S(b);::S(F)
    • S(b);SBLOCK::S(E)
    • S(f);SBLOCK,XP(D)::S(F)
    • P(c);N_GUARD::QAB1(B)
    • P(g);N_GUARD::S(E)
  • Tries
    • Try
      • B(C);XP(e)
      • Threat
        • S(E)
      • Vars
        • S(b);::S(F)
        • P(c);::S(E),XP(c)
      • Refutation
        • S(b);XB(C)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B),XS(f)
    • Vars
      • K(d);P_SPINS(f),S_FLIGHT::QAB(B)
      • S(f);SBLOCK,XP(D)::S(F)
      • S(f);::S(E)
      • P(c);N_GUARD::QAB1(B)
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Developed and maintained by Brian Stephenson.
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