MESON Chess Problem Database

Problem Display
PID: 7896 (nNQ2B2/1n4pK/1r2PP2/1P1k4/1p2R3/1qp1PP2/8/8 w - - 0 1)

Shire, David J

3rd Prize, Scacco!, 1994

nNQ2B2/1n4pK/1r2PP2/1P1k4/1p2R3/1qp1PP2/8/8

#2

10 + 8

4849 The Sushkov Theme 1999
3256 David Shire Selected Chess Problems 2001
133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qc4#
    • 1...Qc2
      • 2.Qc4#
    • 1...Qa4
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qb1
      • 2.Qc4#
    • 1...Qb2
      • 2.Qc4#
    • 1...Qa3
      • 2.Qc4#
    • 1...Rxb5
      • 2.Qc6#
    • 1...Rc6
      • 2.Qxc6#
    • 1...Rxe6
      • 2.Qxe6#
    • 1...Sa5
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sd8
      • 2.Qc5#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Rd4#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sd6
        • 2.Se7#
      • 1...Qd1
        • 2.Sxb4#
      • 1...Qc2
        • 2.Sxb4#
      • 1...Qc4
        • 2.Re5#
      • 1...Qb1!
    • 1.Qxb7+?
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rxb7!
    • 1.f4?
      • threat
        • 2.Rd4#
        • 2.Re5#
      • 1...Rxe6
        • 2.Rd4#
        • 2.Qxe6#
      • 1...gxf6
        • 2.Rd4#
      • 1...Qd1
        • 2.Re5#
        • 2.Qc4#
      • 1...Qc2
        • 2.Qc4#
      • 1...Qc4
        • 2.Re5#
        • 2.Qxc4#
      • 1...Qb1
        • 2.Qc4#
      • 1...Rc6
        • 2.Rd4#
        • 2.Qxc6#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sc7
        • 2.Rd4#
      • 1...Kxe4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Re5#
      • 1...Rxe6
        • 2.Rd4#
      • 1...gxf6
        • 2.Sxf6#
      • 1...Qc2
        • 2.Qc4#
      • 1...Qb1
        • 2.Qc4#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Sc7
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::QAB1(I)
    • Q(a);N_GUARD,P_PINR(C)::QAB1(I)
    • Q(a);N_GUARD::QAB1(I),XQ(a)
    • R(e);N_GUARD,XP(D)::QAB1(I)
    • R(e);N_GUARD::QAB1(I),XR(e)
    • R(e);OGATE,XP(E)::QAB1(I),XR(e)
    • S(f);N_GUARD::QAR1(I)
    • S(f);N_GUARD::QAR1(I),XS(f)
  • Tries
    • Try
      • S(H);
      • Threat
        • R1(C)
      • Vars
        • R(e);OGATE,XS(H)::QAB1(I),XR(e)
        • S(f);SBLOCK::S(H)
        • Q(a);N_GUARD::S(H),XP(c)
        • Q(a);N_GUARD,P_PINR(C)::S(H),XP(c)
        • Q(a);SBLOCK::R1(C)
      • Refutation
        • Q(a);P_PINR(C)
    • Try
      • Q(I);CHECK,XS(f)
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::QAB1(I),XR(e)
      • Refutation
        • R(e);XQ(I)
    • Try
      • P(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);XP(F)::R1(C)
        • Q(a);N_GUARD,P_PINR(C)::QAB1(I)
        • S(f);::R1(C)
        • S(h);::R1(C)
      • Refutation
        • K(d);S_FLIGHT,XR(C)
  • Actual
    • S(H);
    • Threat
      • R1(C)
    • Vars
      • R(e);SBLOCK,XP(E)::R1(C)
      • P(g);XP(F)::S(H),XP(g)
      • Q(a);N_GUARD,P_PINR(C)::QAB1(I)
      • R(e);N_GUARD::QAB1(I),XR(e)
      • S(f);N_GUARD::QAR1(I),XS(f)
      • S(h);N_GUARD::S(H),XR(e)
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