MESON Chess Problem Database

Problem Display
PID: 8188 (8/8/4n3/8/p1Q5/kN6/8/K4n2 w - - 0 1)

Rice, John Michael

The Problemist, 1995

8/8/4n3/8/p1Q5/kN6/8/K4n2

#2

3 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qc3#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd2!
    • 1.Sd2?
      • threat
        • 2.Sb1#
        • 2.Qc3#
      • 1...Sd4
        • 2.Sb1#
        • 2.Qc5#
      • 1...Sc5
        • 2.Sb1#
        • 2.Qxc5#
      • 1...Sxd2!
    • 1.Sd4?
      • threat
        • 2.Sc2#
        • 2.Sb5#
        • 2.Qc3#
      • 1...Sd2
        • 2.Sc2#
        • 2.Sb5#
      • 1...Se3
        • 2.Sb5#
        • 2.Qc3#
      • 1...Sc5
        • 2.Sc2#
        • 2.Sb5#
        • 2.Qxc5#
      • 1...Sc7
        • 2.Sc2#
        • 2.Qc3#
        • 2.Qc5#
      • 1...Sxd4!
    • 1.Sa5?
      • threat
        • 2.Qc3#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sd2!
    • 1.Sc5?
      • threat
        • 2.Qc3#
        • 2.Qxa4#
      • 1...Sd2
        • 2.Qxa4#
      • 1...Sd4
        • 2.Qxa4#
      • 1...Sxc5!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Sc1#
        • 2.Sd2#
        • 2.Sd4#
        • 2.Sa5#
        • 2.Sc5#
      • 1...axb3
        • 2.Qa5#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sd4
        • 2.Sxd4#
      • 1...Sc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR2(C)
      • Vars
        • S(d);N_GUARD::QAB(C)
        • S(d);N_GUARD::QAB(C),XS(d)
      • Refutation
        • S(a);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);XS(B)
    • Try
      • S(B);
      • Threat
        • DUALS(3)
      • Refutation
        • S(d);XS(B)
    • Try
      • S(B);
      • Threat
        • QAR2(C)
      • Vars
        • S(d);N_GUARD::QAB(C)
        • S(d);N_GUARD::QAB(C),XS(d)
      • Refutation
        • S(a);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(C),XP(c)
        • S(d);::QAR1(C),XP(c)
      • Refutation
        • S(d);XS(B)
  • Actual
    • Q(C);
    • Threat
      • DUALS(5)
    • Vars
      • P(c);OGATEB,P_SPINP(c),SBLOCK,XS(B)::QAR2(C)
      • S(a);::QAR(C)+S(B),XS(a)
      • S(d);::QAR(C)+S(B),XS(d)
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