MESON Chess Problem Database

Problem Display
PID: 106173 (8/2Np4/pQ1P2Kn/6pr/3BkNpq/6br/4Pp1p/3R1n1b w - - 0 1)

Beszczynski, Jan

Glos Pracy, 1955

8/2Np4/pQ1P2Kn/6pr/3BkNpq/6br/4Pp1p/3R1n1b

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.Qb7#
    • 1...gxf4
      • 2.Qb1#
  • Tries
    • 1.Be3?
      • threat
        • 2.Qd4#
      • 1...Ke5
        • 2.Qd4#
      • 1...Sf5!
    • 1.Be5?
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Sf5!
    • 1.Qa5?
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qe5#
      • 1...Bxf4
        • 2.Qd5#
      • 1...Sf7
        • 2.Qf5#
      • 1...gxf4!
    • 1.Qb5?
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qe5#
      • 1...Bxf4
        • 2.Qd5#
        • 2.Qb7#
      • 1...gxf4
        • 2.Qd3#
        • 2.Qb1#
      • 1...Sf7
        • 2.Qf5#
      • 1...axb5!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qe5#
      • 1...Bxf4
        • 2.Qd5#
      • 1...gxf4
        • 2.Qc2#
      • 1...Sf7
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK,XS(D)::QAB(E)
    • P(j);SBLOCK,XS(D)::QAB(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(E)
      • Vars
        • K(g);P-FLIGHT::QAB1(E)
      • Refutation
        • S(m);
    • Try
      • B(C);
      • Threat
        • QAR1(E)
      • Vars
        • K(g);P-FLIGHT,XB(C)::QAB1(E)
      • Refutation
        • S(m);
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • K(g);P-FLIGHT,XS(D)::QAB1(E)
        • B(e);SBLOCK,XS(D)::QAB1(E)
        • S(m);N_GUARD::QAB1(E)
      • Refutation
        • P(j);XS(D)
    • Try
      • Q(E);
      • Threat
        • QAR1(E)
      • Vars
        • K(g);P-FLIGHT,XS(D)::QAB1(E)
        • S(m);N_GUARD::QAB1(E)
      • Refutation
        • P(l);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(g);P-FLIGHT,XS(D)::QAB1(E)
      • B(e);SBLOCK,XS(D)::QAB1(E)
      • P(j);SBLOCK,XS(D)::QAB(E)
      • S(m);N_GUARD::QAB1(E)
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