MESON Chess Problem Database

Problem Display
PID: 226361 (K7/7B/8/3R2R1/5kN1/Q7/4p1rp/5qbb w - - 0 1)

Sparke, Arthur M

British Chess Magazine, 1931

K7/7B/8/3R2R1/5kN1/Q7/4p1rp/5qbb

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Qd6#
    • 1...Rf2
      • 2.Qe3#
    • 1...Rg3
      • 2.Qf8#
    • 1...Be3
      • 2.Qxe3#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Rdf5#
      • 1...Rxg4
        • 2.Rf5#
      • 1...Qf3
        • 2.Qd6#
      • 1...Be3
        • 2.Qxe3#
      • 1...Rf2
        • 2.Qe3#
      • 1...Rg3
        • 2.Qf8#
      • 1...Qxb1!
    • 1.Rgf5+?
      • 1...Ke4
        • 2.Sf6#
        • 2.Qe7#
        • 2.Qd3#
      • 1...Kxg4!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Rdf5#
      • 1...Rxg4
        • 2.Rf5#
      • 1...Qf3
        • 2.Qd6#
      • 1...Be3
        • 2.Qxe3#
      • 1...Rf2
        • 2.Qe3#
      • 1...Rg3
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(a);P_PINR(C),SBLOCK::QAB(A)
    • R(e);P_PINR(C),S_CUTB(b)::QAB1(A)
    • R(e);P_PINR(C),SBLOCK::QAR(A)
    • B(b);N_GUARD::QAB1(A),XB(b)
  • Tries
    • Try
      • B(E);
      • Threat
        • R1(C)
      • Vars
        • R(e);P_PINR(C),SBLOCK,XS(B)::R1(D)
        • Q(a);P_PINR(C),SBLOCK::QAB(A)
        • B(b);N_GUARD::QAB1(A),XB(b)
        • R(e);P_PINR(C),S_CUTB(b)::QAB1(A)
        • R(e);P_PINR(C),SBLOCK::QAR(A)
      • Refutation
        • Q(a);XB(E)
    • Try
      • R(D);CHECK
      • Refutation
        • K(g);P-FLIGHT,XS(B)
  • Actual
    • B(E);
    • Threat
      • R1(C)
    • Vars
      • R(e);P_PINR(C),SBLOCK,XS(B)::R1(D)
      • Q(a);P_PINR(C),SBLOCK::QAB(A)
      • B(b);N_GUARD::QAB1(A),XB(b)
      • R(e);P_PINR(C),S_CUTB(b)::QAB1(A)
      • R(e);P_PINR(C),SBLOCK::QAR(A)
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