MESON Chess Problem Database

Problem Display
PID: 28746 (1n3r2/1K1p4/1p4R1/3Qpk1P/4p3/6P1/1pR2P2/1Bb1r2b w - - 0 1)

Shire, David J

British Chess Magazine, 1979

1n3r2/1K1p4/1p4R1/3Qpk1P/4p3/6P1/1pR2P2/1Bb1r2b

#2

8 + 11

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Qxf7#
    • 1...Rc8
      • 2.Qf7#
    • 1...Rd8
      • 2.Qf7#
    • 1...Re8
      • 2.Qf7#
    • 1...Rg8
      • 2.Qf7#
    • 1...Rh8
      • 2.Qf7#
    • 1...Bf4
      • 2.g4#
    • 1...Sa6
      • 2.Qxd7#
    • 1...Sc6
      • 2.Qxd7#
    • 1...d6
      • 2.Qe6#
  • Keys
    • 1.f4!
      • threat
        • 2.Qxe5#
      • 1...Bxf4
        • 2.g4#
      • 1...exf4 ep
        • 2.Re2#
      • 1...Re8
        • 2.Qf7#
      • 1...Sc6
        • 2.Qxd7#
      • 1...e3
        • 2.Rg2#
      • 1...d6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(k);N_GUARD::QAR2(E),XR(k)
    • R(k);N_GUARD::QAR2(E)
    • B(a);SBLOCK::P(D)
    • S(j);N_GUARD::QAB(E),XP(i)
    • P(i);N_GUARD::QAB1(E)
  • Actual
    • P(C);
    • Threat
      • QAR1(E),XP(f)
    • Vars
      • B(a);SBLOCK,XP(C)::P(D)
      • P(e);EP,OGATEB,XP(C)::B(A)+R(B)
      • R(k);N_GUARD::QAR2(E)
      • S(j);N_GUARD::QAB(E),XP(i)
      • P(e);OGATEB,P_PINQ(E)::B(A)+R(B)
      • P(i);N_GUARD::QAB1(E)
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