MESON Chess Problem Database

Problem Display
PID: 109986 (6K1/6p1/2P5/1p1p1p2/2k1pQr1/PNN5/n1PP4/6qb w - - 0 1)

Groeneveld, Cornelis

Buletin Problemistic-25 JT, 1997

6K1/6p1/2P5/1p1p1p2/2k1pQr1/PNN5/n1PP4/6qb

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qf1#
    • 1...Qb6
      • 2.Qf1#
    • 1...Qa7
      • 2.Qf1#
    • 1...Qf1
      • 2.Qxf1#
    • 1...Sxc3
      • 2.d3#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qxd5#
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qc5
        • 2.Sa5#
      • 1...e3
        • 2.d3#
      • 1...d4
        • 2.Sa5#
        • 2.Qxb5#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe6#
      • 1...Sb4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qxd5#
      • 1...Sxc3
        • 2.Qb4#
      • 1...Qd4
        • 2.Sa5#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Sb4
        • 2.Qxb4#
      • 1...e3
        • 2.Qc5#
      • 1...d4
        • 2.Sa5#
        • 2.Qc5#
        • 2.Qd5#
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::QAB(F)
    • Q(a);N_GUARD::QAB(F),XQ(a)
    • S(c);SBLOCK,XS(E)::P(B)
  • Tries
    • Try
      • Q(F);N_PINP(e)
      • Threat
        • QAB1(F),XP(h)
      • Vars
        • S(c);OGATE,XS(E)::QAR1(F),XS(c)
        • Q(a);N_GUARD::QAR1(F),XQ(a)
        • Q(a);SBLOCK::S(D)
        • P(e);N_GUARD::P(B)
      • Refutation
        • S(c);
  • Actual
    • Q(F);N_PINP(e)
    • Threat
      • QAB1(F),XP(h)
    • Vars
      • S(c);N_GUARD,XS(E)::QAR1(F)
      • Q(a);SBLOCK::S(D)
      • Q(a);N_GUARD::QAR1(F),XQ(a)
      • S(c);N_GUARD::QAR1(F),XS(c)
      • P(e);S_CUTQ(a)::QAR1(F)
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