MESON Chess Problem Database

Problem Display
PID: 185714 (3Q4/8/2pPB1pp/K3P3/2N1k1p1/2Rn4/2n1N1P1/8 w - - 0 1)

Georgiev, Emil M

Chess, 1957

3Q4/8/2pPB1pp/K3P3/2N1k1p1/2Rn4/2n1N1P1/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Sd2#
    • 1...c5
      • 2.Qa8#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Sd2#
        • 2.Qxg6#
      • 1...Sxe5
        • 2.Sd2#
        • 2.Qf4#
        • 2.Qxe5#
      • 1...Se3
        • 2.Sd2#
        • 2.Qxe3#
      • 1...Sd4
        • 2.Sg3#
        • 2.Sd2#
        • 2.Qe3#
      • 1...Sf4
        • 2.Sd2#
        • 2.Qxf4#
      • 1...hxg5!
    • 1.Qb6?
      • threat
        • 2.Qxc6#
      • 1...Sxe5
        • 2.Sd2#
      • 1...Se3
        • 2.Qxe3#
        • 2.Qd4#
      • 1...Scb4
        • 2.Qe3#
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Sg3#
      • 1...c5
        • 2.Qc6#
        • 2.Qb7#
      • 1...Sdb4!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Qxg6#
      • 1...Sxe5
        • 2.Sd2#
        • 2.Qxe5#
        • 2.Qf4#
      • 1...Se3
        • 2.Sd2#
      • 1...Sd4
        • 2.Sg3#
      • 1...Sf4
        • 2.Sd2#
        • 2.Qxf4#
      • 1...g5
        • 2.Qf5#
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(b);SBLOCK,XP(F)::S(D)
    • P(e);OGATEB::QAB(I)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Refutation
        • P(g);XQ(I)
    • Try
      • Q(I);
      • Threat
        • QAB(I),XP(e)
      • Vars
        • S(b);SBLOCK,XP(F)::S(D)
        • S(a);N_GUARD::QAR1(I),XS(a)
        • S(b);SBLOCK::S(A)
      • Refutation
        • S(b);
  • Actual
    • Q(I);
    • Threat
      • QAB(I),XP(f)
    • Vars
      • S(a);SBLOCK::S(D)
      • S(a);SBLOCK::S(A)
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