MESON Chess Problem Database

Problem Display
PID: 107789 (8/3K4/1PpppP2/3k4/2NpN3/1P3P2/7P/7Q w - - 0 1)

Brabec, Juraj

Zpravodaj Kotva, 1967

8/3K4/1PpppP2/3k4/2NpN3/1P3P2/7P/7Q

#2

9 + 5

6490 yacpdb 2009
5454 Near Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1?
      • 1...d3
        • 2.Se3#
      • 1...c5
        • 2.Qa8#
      • 1...e5!
    • 1.Qg1?
      • 1...d3
        • 2.Sc3#
      • 1...e5
        • 2.Qg8#
      • 1...c5!
  • Keys
    • 1.Qd1!
      • 1...d3
        • 2.Qxd3#
      • 1...c5
        • 2.Sc3#
      • 1...e5
        • 2.Se3#

This anticipates 88754(1989)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(a);N_GUARD::S(E)
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Vars
        • P(a);N_GUARD::S(F)
        • P(e);OGATEB::QAB(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);P_PINP(a)
    • Vars
      • P(a);OGATEB::QAR2(A),XP(a)
      • P(c);SBLOCK::S(F)
      • P(e);SBLOCK::S(E)
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