MESON Chess Problem Database

Problem Display
PID: 35218 (1b1r4/6nN/K1Q5/5k2/2n1R2P/8/4N3/5b2 w - - 0 1)

Shire, David J

Problem Observer, 1998

1b1r4/6nN/K1Q5/5k2/2n1R2P/8/4N3/5b2

#2

6 + 6

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxd4#
    • 1...Rc8
      • 2.Sd4#
    • 1...Re8
      • 2.Sd4#
    • 1...Rf8
      • 2.Sd4#
    • 1...Rg8
      • 2.Sd4#
    • 1...Rh8
      • 2.Sd4#
    • 1...Bg3
      • 2.Sxg3#
    • 1...Ba7
      • 2.Sg3#
    • 1...Se5
      • 2.Rf4#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Keys
    • 1.h5!
      • threat
        • 2.Qg6#
      • 1...Sxh5
        • 2.Qe6#
      • 1...Rd6
        • 2.Sg3#
      • 1...Bd6
        • 2.Sd4#
      • 1...Se5
        • 2.Rf4#
      • 1...Sd6
        • 2.Qd5#
      • 1...Se6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(f);N_GUARD::S(A),XR(f)
    • R(f);N_GUARD::S(A)
    • B(e);N_GUARD::S(A),XB(e)
    • B(e);N_GUARD::S(A)
    • S(b);P_PINS(A),SBLOCK,S_CUTB(e)::R1(B)
    • S(d);N_GUARD::QAB1(E)
    • S(d);N_GUARD::QAB1(E),XS(d)
  • Actual
    • P(C);
    • Threat
      • QAB1(E)
    • Vars
      • S(d);N_GUARD,XP(C)::QAB1(E)
      • R(f);P_PINQ(E),S_CUTB(e)::S(A)
      • B(e);S_CUTR(f)::S(A)
      • S(b);P_PINS(A),SBLOCK,S_CUTB(e)::R1(B)
      • S(b);N_GUARD,P_PINS(A),S_CUTB(e),S_CUTR(f)::QAR2(E)
      • S(d);N_GUARD::QAB1(E),XS(d)
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Developed and maintained by Brian Stephenson.
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