MESON Chess Problem Database

Problem Display
PID: 35071 (3r4/b4R1p/4Q3/4PNpK/N2Pk3/5n2/5P1B/q2r1B2 w - - 0 1)

Shire, David J

US Problem Bulletin, 1997

3r4/b4R1p/4Q3/4PNpK/N2Pk3/5n2/5P1B/q2r1B2

#2

10 + 8

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxd4
      • 2.Sg3#
    • 1...Qb1
      • 2.Sc3#
    • 1...Qa2
      • 2.Sc3#
    • 1...R1xd4
      • 2.Sg3#
    • 1...R8xd4
      • 2.Sg3#
    • 1...Ra8
      • 2.Qc6#
    • 1...Rb8
      • 2.Qc6#
    • 1...Re8
      • 2.Qc6#
    • 1...Rf8
      • 2.Qc6#
    • 1...Rg8
      • 2.Qc6#
    • 1...Rh8
      • 2.Qc6#
    • 1...Bxd4
      • 2.Sg3#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Bb8
      • 2.Sc5#
    • 1...Sxd4
      • 2.Sg3#
  • Tries
    • 1.Sd6+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Rxd6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Sg3#
      • 1...Qxd4
        • 2.Sc3#
      • 1...R1xd4
        • 2.Bd3#
      • 1...R8xd4
        • 2.Sd6#
      • 1...Bxd4
        • 2.Sc5#
      • 1...Sxd4
        • 2.Bg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • Q(a);N_GUARD::S(D),XQ(a)
    • Q(a);SBLOCK,XP(E)::S(G)
    • Q(a);N_GUARD::S(D)
    • R(b);SBLOCK,XP(E)::S(G)
    • R(h);SBLOCK,XP(E)::S(G)
    • R(h);N_GUARD::QAB(I)
    • B(f);SBLOCK,XP(E)::S(G)
    • B(f);N_GUARD::S(D),XB(f)
    • B(f);N_GUARD::S(D)
    • S(c);SBLOCK,XP(E)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(E)::QAR1(I)
      • Refutation
        • R(h);XS(G)
  • Actual
    • Q(I);
    • Threat
      • S(G)
    • Vars
      • Q(a);N_GUARD,P_SPINQ(a),XP(E)::S(D)
      • R(b);N_GUARD,P_SPINR(b),XP(E)::B(A)
      • R(h);N_GUARD,P_SPINR(h),XP(E)::S(G)
      • B(f);N_GUARD,P_SPINB(f),XP(E)::S(D)
      • S(c);OGATEB,P_SPINS(c),XP(E)::B(A)
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