MESON Chess Problem Database

Problem Display
PID: 156830 (6BB/KPP3rN/2P4b/4kpnb/4pR1n/8/3Q4/8 w - - 0 1)

Rice, John Michael

The Problemist, 2015

6BB/KPP3rN/2P4b/4kpnb/4pR1n/8/3Q4/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Qd4#
  • Tries
    • 1.b8Q?
      • threat
        • 2.Qbb2#
        • 2.Qb5#
      • 1...Sxh7
        • 2.Qbb2#
      • 1...Bf7
        • 2.c8Q#
        • 2.c8B#
      • 1...Sf7
        • 2.Qe8#
      • 1...e3
        • 2.Qd4#
      • 1...Be2
        • 2.Qbb2#
      • 1...Shf3
        • 2.Qb5#
      • 1...Sgf3
        • 2.Qb5#
      • 1...Se6!
  • Keys
    • 1.c8Q!
      • threat
        • 2.Qc7#
        • 2.Qb8#
      • 1...Sxh7
        • 2.Qe6#
      • 1...Bf7
        • 2.b8Q#
        • 2.b8B#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(a);::QAB1(A)
  • Tries
    • Try
      • P(E);P_SPINP(F)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);XS(G)::QAB(E)
        • B(f);N_PINP(F)::P=Q
        • S(e);N_GUARD,N_PINP(F),S_CUTB(f)::QAR(E)
        • P(a);::QAB1(A)
        • B(f);::QAB(E)
        • S(b);::QAR(E)
        • S(e);::QAR(E)
      • Refutation
        • S(e);
  • Actual
    • P(F);P_SPINP(E)
    • Threat
      • DUALS(2)
    • Vars
      • S(e);N_GUARD,XS(G)::QAR1(F)
      • B(f);N_PINP(E)::P=Q
      • S(e);N_GUARD::QAR1(F),XS(e)
      • S(e);N_GUARD,N_PINP(E),S_CUTB(f)::QAR(F)
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