MESON Chess Problem Database

Problem Display
PID: 30039 (8/3r2n1/1R6/Np1k1r2/8/1N6/K2BQ3/7b w - - 0 1)

Shire, David J

The Problemist, 1988

8/3r2n1/1R6/Np1k1r2/8/1N6/K2BQ3/7b

#2

6 + 6

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qd3#
    • 1...Rd6
      • 2.Rxb5#
    • 1...Be4
      • 2.Qxb5#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qd3#
      • 1...Rf3
        • 2.Qe5#
      • 1...Rf4
        • 2.Qe5#
      • 1...Rd6
        • 2.Rxb5#
      • 1...Be4
        • 2.Qxb5#
      • 1...Se6
        • 2.Qxe6#
      • 1...Rf2!
    • 1.Bf4?
      • threat
        • 2.Rxb5#
        • 2.Qd3#
      • 1...Re5
        • 2.Qd3#
        • 2.Qxe5#
      • 1...Rd6
        • 2.Rxb5#
        • 2.Rxd6#
      • 1...Rb7
        • 2.Rd6#
        • 2.Qd3#
      • 1...Rc7
        • 2.Rd6#
        • 2.Qd3#
      • 1...Be4
        • 2.Qxb5#
      • 1...Se6
        • 2.Qxe6#
      • 1...b4
        • 2.Rb5#
        • 2.Qd3#
        • 2.Qc4#
      • 1...Rxf4!
    • 1.Qe3?
      • threat
        • 2.Qd4#
      • 1...Rd6
        • 2.Rxb5#
      • 1...Se6
        • 2.Qxe6#
      • 1...Rf4!
  • Keys
    • 1.Bb4!
      • threat
        • 2.Rxb5#
      • 1...Be4
        • 2.Qxb5#
      • 1...Re5
        • 2.Qd3#
      • 1...Rb7
        • 2.Rd6#
      • 1...Rc7
        • 2.Rd6#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(d);SBLOCK::QAR2(C)
    • R(e);SBLOCK::R(F),XP(b)
    • B(a);SBLOCK::QAR2(C),XP(b)
    • S(f);N_GUARD::QAB1(C)
    • S(f);N_GUARD::QAB1(C),XS(f)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR2(C)
      • Vars
        • R(d);N_GUARD::QAR1(C)
        • R(e);SBLOCK::R(F),XP(b)
        • B(a);SBLOCK::QAR2(C),XP(b)
        • S(f);N_GUARD::QAB1(C),XS(f)
      • Refutation
        • R(d);P_PINQ(C)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);SBLOCK::QAR2(C),XP(b)
        • S(f);N_GUARD::QAB1(C),XS(f)
      • Refutation
        • R(d);XB(B)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • R(e);SBLOCK::R(F),XP(b)
        • S(f);N_GUARD::QAB1(C),XS(f)
      • Refutation
        • R(d);
  • Actual
    • B(B);
    • Threat
      • R(F),XP(b)
    • Vars
      • B(a);SBLOCK::QAR2(C),XP(b)
      • R(d);SBLOCK::QAR2(C)
      • R(e);N_GUARD::R1(F)
      • S(f);N_GUARD::QAB1(C),XS(f)
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