MESON Chess Problem Database

Problem Display
PID: 1966 (8/8/8/8/8/3K1p2/5P2/Q2NkB2 w - - 0 1)

Anonymous

Shakhmatny Listok, 1861

8/8/8/8/8/3K1p2/5P2/Q2NkB2

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • 1...Kxd1
        • 2.Qa1#
        • 2.Qb1#
        • 2.Qd2#
      • 1...Kxf1!
    • 1.Qc3+?
      • 1...Kxd1
        • 2.Qa1#
        • 2.Qd2#
      • 1...Kxf1!
    • 1.Qd4?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qe5+?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qf6?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qg7?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qa2?
      • 1...Kxd1
        • 2.Qb1#
        • 2.Qa1#
        • 2.Qd2#
      • 1...Kxf1!
    • 1.Qa3?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qa5+?
      • 1...Kxd1
        • 2.Qd2#
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qa6?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qa7?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
    • 1.Qa8?
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1!
  • Keys
    • 1.Qh8!
      • 1...Kxd1
        • 2.Qa1#
      • 1...Kxf1
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(B)::QAR(A)
      • K(a);OGATEB,P-FLIGHT,XB(C)::QAR2(A)
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