MESON Chess Problem Database

Problem Display
PID: 78377 (6K1/8/8/p1QPp1B1/2prk3/2pN1R1n/qn6/rb5B w - - 0 1)

Shire, David J

Australian Chess, 2003

6K1/8/8/p1QPp1B1/2prk3/2pN1R1n/qn6/rb5B

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Rf4#
    • 1...Rxd5
      • 2.Qe3#
    • 1...Bxd3
      • 2.Rf1#
    • 1...Sxd3
      • 2.Rf2#
    • 1...Sg1
      • 2.Sf2#
    • 1...Sf2
      • 2.Sxf2#
    • 1...Sxg5
      • 2.Sf2#
    • 1...cxd3
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
  • Keys
    • 1.d6!
      • threat
        • 2.Qxe5#
      • 1...cxd3+
        • 2.Rf7#
      • 1...Rxd3
        • 2.Rf4#
      • 1...Bxd3
        • 2.Rf1#
      • 1...Sxd3
        • 2.Rf2#
      • 1...Rd5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(h);SBLOCK,XS(B)::B(A)+R(C),DCHECK
    • R(h);OGATE,SBLOCK,XP(E)::QAR1(D)
    • B(b);SBLOCK,XS(B)::B(A)+R(C)
    • S(d);SBLOCK,XS(B)::B(A)+R(C)
    • S(f);N_GUARD::S(B)
    • S(f);N_GUARD::S(B),XS(f)
    • S(f);N_GUARD,XB(F)::S(B)
  • Actual
    • P(E);
    • Threat
      • QAR1(D),XP(k)
    • Vars
      • P(g);CHECK,SBLOCK,XS(B)::B(A)+R(C)
      • R(h);SBLOCK,XS(B)::B(A)+R(C),DCHECK
      • B(b);SBLOCK,XS(B)::B(A)+R(C)
      • S(d);SBLOCK,XS(B)::B(A)+R(C)
      • R(h);OGATE,SBLOCK::QAR1(D)
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