MESON Chess Problem Database

Problem Display
PID: 47748 (8/8/8/B7/5P2/3N2Q1/4k3/1K4n1 w - - 0 1)

Rice, John Michael

Kingston, 1999

8/8/8/B7/5P2/3N2Q1/4k3/1K4n1

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
136 Problem Observer 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qe1#
    • 1...Kf1
      • 2.Qf2#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Qf2#
      • 1...Kf1
        • 2.Qf2#
      • 1...Sh3!
    • 1.Sc1+?
      • 1...Kd1
        • 2.Qe1#
        • 2.Qxg1#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Kf1!
    • 1.Se5?
      • threat
        • 2.Qe1#
      • 1...Kd1
        • 2.Qe1#
        • 2.Qd3#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Kf1!
    • 1.Qf2+?
      • 1...Kd1
        • 2.Sb2#
        • 2.Qe1#
        • 2.Qf1#
        • 2.Qc2#
        • 2.Qd2#
      • 1...Kxd3!
    • 1.Qe3+?
      • 1...Kd1
        • 2.Sb2#
        • 2.Sf2#
        • 2.Qd2#
        • 2.Qe1#
      • 1...Kf1
        • 2.Qf2#
      • 1...Kxe3!
  • Keys
    • 1.Se1!
      • 1...Kd1
        • 2.Qd3#
      • 1...Kf1
        • 2.Qg2#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Sh3
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR1(C)
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
      • Refutation
        • S(a);
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT::QAR2(C)
      • K(b);S_FLIGHT::QAB1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(a);N_GUARD::QAB1(C)
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