MESON Chess Problem Database

Problem Display
PID: 232941 (Q7/8/3p1p2/2n1kP2/3p4/1b2P3/5N2/2B1K3 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2011

Q7/8/3p1p2/2n1kP2/3p4/1b2P3/5N2/2B1K3

#2

6 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sa6
      • 2.Qe4#
    • 1...Se6
      • 2.Qe4#
    • 1...Sd7
      • 2.Qe4#
  • Tries
    • 1.e4?
      • threat
        • 2.Sg4#
      • 1...Sd3+
        • 2.Sxd3#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...d3
        • 2.Qa1#
      • 1...d5
        • 2.Qb8#
      • 1...Bd1
        • 2.Qd5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sb7!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sg4#
      • 1...Sd3+
        • 2.Sxd3#
      • 1...dxe3
        • 2.Bb2#
      • 1...Se4
        • 2.Qxe4#
      • 1...d5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(c);N_GUARD::QAR1(F)
    • S(c);N_GUARD::QAR1(F),XS(c)
  • Tries
    • Try
      • P(D);
      • Threat
        • S(C)
      • Vars
        • S(c);CHECK,N_GUARD::S(C),XS(c)
        • S(c);OGATE,XP(D)::QAR1(F),XS(c)
        • P(b);OGATEB::QAB(F)
        • P(e);OGATEB::QAB(F)
        • B(a);N_GUARD::QAR1(F)
        • B(a);N_GUARD::QAR1(F),XB(a)
      • Refutation
        • S(c);
  • Actual
    • Q(F);
    • Threat
      • S(C)
    • Vars
      • S(c);CHECK,N_GUARD::S(C),XS(c)
      • P(b);OGATEB,XP(D)::B(A)
      • S(c);N_GUARD::QAR1(F),XS(c)
      • P(e);SBLOCK::QAB1(F)
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