MESON Chess Problem Database

Problem Display
PID: 121402 (5B2/n5Q1/P3p3/3kN3/4p3/1K6/2P5/8 w - - 0 1)

Kahles, J

Sach-Mat, 1884

5B2/n5Q1/P3p3/3kN3/4p3/1K6/2P5/8

#2

6 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qd6#
        • 2.Qc5#
      • 1...Kd4
        • 2.Qc5#
      • 1...Sb5
        • 2.Qc5#
      • 1...Sc6
        • 2.Qd6#
      • 1...Sc8
        • 2.Qc5#
      • 1...e3!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sb4#
        • 2.Qd7#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Sxc6
        • 2.c4#
      • 1...e3
        • 2.Qg2#
      • 1...e5
        • 2.Qd7#
      • 1...Sb5
        • 2.Sb4#
      • 1...Sc8
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAB1(E)
        • S(d);::QAR1(E)
      • Refutation
        • P(a);
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • S(d);SBLOCK,XS(C)::P(A)
      • P(a);OGATEB::QAB(E)
      • P(c);::QAR2(E)
      • S(d);::S(C)
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