MESON Chess Problem Database

Problem Display
PID: 134208 (8/8/1P2Q3/2P5/p1K5/kB6/n7/3N4 w - - 0 1)

Stojnic, Dragan

Sachsische Zeitung, 1999

8/8/1P2Q3/2P5/p1K5/kB6/n7/3N4

#2

6 + 3

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Qd7?
      • threat
        • 2.Qxa4#
      • 1...axb3
        • 2.Qa7#
      • 1...Sc3!
    • 1.Qe1?
      • 1...axb3
        • 2.Qa5#
      • 1...Sc1
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc3!
    • 1.Qe2?
      • threat
        • 2.Qxa2#
        • 2.Qb2#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sc3
        • 2.Qb2#
      • 1...Sb4
        • 2.Qb2#
      • 1...axb3!
    • 1.Qc6?
      • threat
        • 2.Qxa4#
      • 1...axb3
        • 2.Qa8#
      • 1...Sc3!
    • 1.Qh6?
      • 1...Sc3
        • 2.Qc1#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sb4
        • 2.Qc1#
      • 1...axb3!
    • 1.Qe7?
      • 1...axb3
        • 2.Qa7#
      • 1...Sc3
        • 2.c6#
      • 1...Sc1
        • 2.c6#
      • 1...Sb4!
    • 1.Qe8?
      • threat
        • 2.Qxa4#
      • 1...axb3
        • 2.Qa8#
      • 1...Sc3!
  • Keys
    • 1.Qe3!
      • 1...axb3
        • 2.Qxb3#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sc3
        • 2.Qc1#
      • 1...Sb4
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(c)
      • Vars
        • P(c);OGATEB,XB(B)::QAR(F)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Vars
        • P(c);OGATEB,XB(B)::QAR2(F)
        • S(a);N_GUARD::QAB1(F)
        • S(a);N_GUARD::QAB1(F),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(F)
      • Refutation
        • P(c);XB(B)
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(c)
      • Vars
        • P(c);OGATEB,XB(B)::QAR(F)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Vars
        • S(a);N_GUARD::QAB(F)
        • S(a);N_GUARD::QAB(F),XS(a)
      • Refutation
        • P(c);XB(B)
    • Try
      • Q(F);
      • Vars
        • P(c);OGATEB,XB(B)::QAR(F)
        • S(a);N_GUARD::QAB(F)+P(D)
      • Refutation
        • S(a);
    • Try
      • Q(F);
      • Threat
        • QAR1(F),XP(c)
      • Vars
        • P(c);OGATEB,XB(B)::QAR(F)
      • Refutation
        • S(a);
  • Actual
    • Q(F);
    • Vars
      • P(c);OGATE,P_SPINP(c),XB(B)::QAR1(F),XP(c)
      • S(a);N_GUARD::QAB(F),XS(a)
      • S(a);N_GUARD::QAB(F)
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