MESON Chess Problem Database

Problem Display
PID: 185259 (2n5/5KQp/3p4/1N1P4/3PkpP1/7r/B3nP1B/4N3 w - - 0 1)

Georgiev, Emil M

Chess, 1956

2n5/5KQp/3p4/1N1P4/3PkpP1/7r/B3nP1B/4N3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qxh7#
    • 1...Rc3
      • 2.Qxh7#
    • 1...Rd3
      • 2.Qxh7#
    • 1...Re3
      • 2.Qxh7#
    • 1...Rf3
      • 2.Qxh7#
    • 1...Rg3
      • 2.Qxh7#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sxd4
      • 2.Qxd4#
    • 1...Sb6
      • 2.Sxd6#
    • 1...Sa7
      • 2.Sxd6#
    • 1...Se7
      • 2.Sxd6#
    • 1...h5
      • 2.Qg6#
      • 2.Qh7#
    • 1...h6
      • 2.Qg6#
      • 2.Qh7#
  • Tries
    • 1.Qf6?
      • threat
        • 2.Qf5#
        • 2.Qe6#
      • 1...Sxd4
        • 2.Qxd4#
        • 2.Qxf4#
      • 1...Rh6
        • 2.Qf5#
      • 1...Sg3
        • 2.Sc3#
        • 2.Qe6#
      • 1...Se7
        • 2.Sxd6#
        • 2.Qxe7#
        • 2.Qe6#
      • 1...Rh5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qf5#
      • 1...Sxd4
        • 2.Qxf4#
      • 1...Rh5
        • 2.Bb1#
      • 1...Sg3
        • 2.Bb1#
      • 1...Se7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::QAB(J),XP(f)
    • S(a);N_GUARD,S_CUTR(b)::S(G)
    • S(a);OGATE,XP(E)::QAR1(J),XS(a)
    • S(g);N_GUARD::S(G),XP(e)
  • Tries
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAB1(J)
      • Refutation
        • R(b);
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • S(a);N_GUARD,XP(E)::QAR1(J),XP(d)
      • R(b);N_GUARD::B(B)
      • S(a);S_CUTR(b)::B(B)
      • S(g);N_GUARD::QAR(J),XS(g)
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