MESON Chess Problem Database

Problem Display
PID: 63302 (nBq5/1pn4Q/rpk1r3/8/PP2b3/N1N2B2/4R3/3RK3 w - - 0 1)

Kipping, Cyril Stanley

Starling, WL

Chess, 1945

nBq5/1pn4Q/rpk1r3/8/PP2b3/N1N2B2/4R3/3RK3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd7
      • 2.Qxd7#
    • 1...Qxb8
      • 2.Qd7#
    • 1...Qf8
      • 2.Qd7#
    • 1...Qg8
      • 2.Qd7#
    • 1...Qh8
      • 2.Qd7#
    • 1...Sb5
      • 2.axb5#
  • Tries
    • 1.Bxe4+?
      • 1...Sd5
        • 2.Bxd5#
      • 1...Rxe4!
    • 1.Qxe4+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Rxe4!
  • Keys
    • 1.Scb5!
      • threat
        • 2.Rc2#
      • 1...Bxf3
        • 2.Qc2#
      • 1...Sxb5
        • 2.axb5#
      • 1...Qf8
        • 2.Qd7#
      • 1...Qh8
        • 2.Qd7#
      • 1...Re5
        • 2.Rd6#
      • 1...Bd5
        • 2.Rc1#
      • 1...Sd5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::QAB1(I),XQ(i)
    • Q(i);N_GUARD,XB(J)::QAB1(I)
    • Q(i);N_GUARD::QAB1(I)
    • S(g);OGATE::P(G),XS(g)
  • Tries
    • Try
      • B(F);CHECK,XB(a)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::B(F),XS(g)
      • Refutation
        • R(e);P_PINR(C),XB(F)
    • Try
      • Q(I);CHECK,XB(a)
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAB1(I),XS(g)
      • Refutation
        • R(e);P_PINR(C),P_SPINR(e),XQ(I)
  • Actual
    • S(E);
    • Threat
      • R(C)
    • Vars
      • B(a);N_SPINB(a),OGATE,P_PINR(C),XB(F)::QAR(I)
      • S(g);OGATE,XS(E)::P(G),XS(g)
      • Q(i);N_GUARD::QAB1(I)
      • R(e);N_GUARD::R1(A)
      • B(a);P_PINR(C)::R(A)
      • S(g);N_SPINB(a),SBLOCK::S(E)
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