MESON Chess Problem Database

Problem Display
PID: 158322 (2r5/n2RP3/N7/3P3r/2Nk4/7p/b1p1QP1n/2K1B3 w - - 0 1)

Shire, David J

3/5 HM., British Chess Magazine, 1999-2000

2r5/n2RP3/N7/3P3r/2Nk4/7p/b1p1QP1n/2K1B3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Qe3#
    • 1...Bxc4
      • 2.Qe3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Qe3#
      • 1...Kc3
        • 2.Qe3#
      • 1...Rc3
        • 2.Qe4#
      • 1...Sf1
        • 2.Sf3#
      • 1...Sg4
        • 2.Sf3#
      • 1...Re5!
    • 1.Qg4+?
      • 1...Kd3
        • 2.Sb2#
        • 2.Sb4#
      • 1...Sxg4!
    • 1.e8Q?
      • threat
        • 2.Q2e4#
        • 2.Q8e3#
        • 2.Q8e4#
      • 1...Rh4
        • 2.Q8e3#
        • 2.Q8e5#
      • 1...Re5
        • 2.Q8xe5#
      • 1...Sf1
        • 2.Q2e4#
        • 2.Q8e4#
      • 1...Sg4
        • 2.Q2e4#
        • 2.Q8e4#
      • 1...Rxe8!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe4#
      • 1...Kxd5
        • 2.Qe4#
      • 1...Bxd5
        • 2.Qe3#
      • 1...Rh4
        • 2.Sf5#
      • 1...Re5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(h);SBLOCK,XS(E)::QAB1(C)
    • B(a);SBLOCK,XS(E)::QAB1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(C)
      • Vars
        • K(e);S_FLIGHT::QAR2(C)
        • R(h);SBLOCK::QAR1(C)
        • S(c);N_GUARD::S(E)
      • Refutation
        • R(f);
    • Try
      • Q(C);CHECK
      • Refutation
        • S(c);XQ(C)
    • Try
      • P(I);
      • Threat
        • DUALS(3)
      • Vars
        • R(f);N_GUARD::QAB1(I),XR(f)
      • Refutation
        • R(h);XQ(I)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • K(e);P-FLIGHT,XP(F)::QAB1(C)
      • B(a);SBLOCK,XP(F)::QAB1(C)
      • R(f);N_GUARD::S(E)
      • R(f);SBLOCK::QAR2(C)
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