MESON Chess Problem Database

Problem Display
PID: 83966 (8/8/1K4p1/3N3p/3kB1b1/3P4/nR1p1P1Q/8 w - - 0 1)

Csak, Janos

Sachsische Zeitung, 1982

8/8/1K4p1/3N3p/3kB1b1/3P4/nR1p1P1Q/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Rb4#
    • 1...Sc3
      • 2.Rb4#
    • 1...Sb4
      • 2.Rxb4#
  • Tries
    • 1.Sc7?
      • threat
        • 2.Sb5#
      • 1...Kc3
        • 2.Qe5#
      • 1...Sc3
        • 2.Rb4#
      • 1...Bd7!
    • 1.Qh4?
      • threat
        • 2.Qf6#
      • 1...Ke5
        • 2.Qf6#
      • 1...g5!
    • 1.f4?
      • threat
        • 2.Qg1#
        • 2.Qf2#
      • 1...d1Q
        • 2.Qf2#
      • 1...d1R
        • 2.Qf2#
      • 1...d1S!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sb5#
      • 1...Kxc3
        • 2.Qe5#
      • 1...Sxc3
        • 2.Rb4#
      • 1...Bd7
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::R(A)
    • S(a);N_GUARD::R(A),XS(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(c);S_FLIGHT::QAB(C)
        • S(a);N_GUARD,SBLOCK::R(A)
      • Refutation
        • B(d);
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
      • Refutation
        • P(f);
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAB(C)
      • Refutation
        • P(b);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(c);S_FLIGHT,XS(F)::QAB(C)
      • S(a);N_GUARD,SBLOCK,XS(F)::R(A)
      • B(d);N_GUARD::S(F)
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