MESON Chess Problem Database

Problem Display
PID: 1057 (k5r1/1n6/1KpQ4/3N4/8/8/8/8 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 1999

k5r1/1n6/1KpQ4/3N4/8/8/8/8

#2

3 + 4

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Sc7#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qxb7#
      • 1...Rg7
        • 2.Qc8#
      • 1...Sa5
        • 2.Qa7#
      • 1...Sc5
        • 2.Qa7#
      • 1...Sd6
        • 2.Qa7#
      • 1...Sd8
        • 2.Qa7#
        • 2.Qc8#
      • 1...Rb8!
    • 1.Qe7?
      • threat
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Rb8
        • 2.Sc7#
      • 1...Sa5
        • 2.Qa7#
      • 1...Sc5
        • 2.Qa7#
      • 1...Sd6
        • 2.Qa7#
      • 1...Sd8
        • 2.Qa7#
      • 1...Rg7!
    • 1.Qb8+?
      • 1...Rxb8
        • 2.Sc7#
      • 1...Kxb8!
    • 1.Qxc6?
      • threat
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Rg7
        • 2.Qc8#
      • 1...Rb8
        • 2.Sc7#
      • 1...Rg6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxb7#
      • 1...Kb8
        • 2.Qxb7#
      • 1...Rg7
        • 2.Qc8#
      • 1...Rb8
        • 2.Sc7#
      • 1...Sa5
        • 2.Qa7#
      • 1...Sc5
        • 2.Qa7#
      • 1...Sd6
        • 2.Qa7#
      • 1...Sd8
        • 2.Qc8#
        • 2.Qa7#

There are these versions: 166345

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK::S(A)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XS(b)
      • Vars
        • R(d);N_GUARD::QAR2(C)
        • S(b);OGATE::QAR1(C)
      • Refutation
        • R(d);
    • Try
      • Q(C);
      • Threat
        • QAB1(C),XS(b)
      • Vars
        • K(c);P-FLIGHT::QAR1(C),XS(b)
        • R(d);SBLOCK::S(A)
        • S(b);OGATE::QAR1(C)
      • Refutation
        • R(d);
    • Try
      • Q(C);CHECK
      • Vars
        • R(d);SBLOCK,XQ(C)::S(A)
      • Refutation
        • K(c);P-FLIGHT,XQ(C)
    • Try
      • Q(C);P_PINS(b),XP(a)
      • Threat
        • QAB1(C),XS(b)
      • Vars
        • K(c);N_SPINS(b),P-FLIGHT::QAR1(C),XS(b)
        • R(d);N_GUARD::QAR2(C)
        • R(d);SBLOCK::S(A)
      • Refutation
        • R(d);P_PINQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XS(b)
    • Vars
      • K(c);P-FLIGHT::QAR1(C),XS(b)
      • R(d);N_GUARD::QAR2(C)
      • R(d);SBLOCK::S(A)
      • S(b);OGATE::QAR1(C)
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