MESON Chess Problem Database

Problem Display
PID: 117561 (kB6/p2N1K2/n2Np3/5p2/4pP2/8/6Q1/8 w - - 0 1)

Markov, Evgeny Viktorovich

Shakhmatnaya kompozitsiya, 1992

kB6/p2N1K2/n2Np3/5p2/4pP2/8/6Q1/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qg8?
      • 1...Sxb8
        • 2.Qxb8#
      • 1...Sb4
        • 2.Bc7#
      • 1...Sc5
        • 2.Bc7#
      • 1...Sc7
        • 2.Bxc7#
      • 1...e3
        • 2.Qg2#
      • 1...e5!
  • Keys
    • 1.Qa2!
      • 1...Sxb8
        • 2.Sb6#
      • 1...Sb4
        • 2.Qxa7#
      • 1...Sc5
        • 2.Qxa7#
      • 1...Sc7
        • 2.Qxa7#
      • 1...e3
        • 2.Qg2#
      • 1...e5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • S(c);OGATE,P_SPINS(c),XB(F)::QAR1(A),XS(c)
        • S(c);N_GUARD::QAR(A)+B(F)
        • S(c);N_GUARD::QAR(A)+B(F),XS(c)
        • P(a);OGATEB::QAB(A)
      • Refutation
        • P(d);
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • S(c);P_SPINP(e),SBLOCK,XB(F)::S(D)
      • S(c);OGATE,P_SPINP(e)::QAR1(A),XP(e)
      • P(a);OGATEB::QAB(A)
      • P(d);N_GUARD::QAB(A)
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