MESON Chess Problem Database

Problem Display
PID: 178542 (6b1/2pN3p/2n5/5R2/kq4Rr/3B4/NPP1n3/2QKB1b1 w - - 0 1)

Holladay, Edgar Dinwiddie

Busmen's Chess Review, 1966

6b1/2pN3p/2n5/5R2/kq4Rr/3B4/NPP1n3/2QKB1b1

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.b3#
    • 1...Qd4
      • 2.Sc5#
    • 1...Qe4
      • 2.Bb5#
    • 1...Qf4
      • 2.Bb5#
    • 1...Qxg4
      • 2.Bb5#
    • 1...Sxc1
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sa5
      • 2.Bb5#
  • Keys
    • 1.Qa1!
      • threat
        • 2.Sc3#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Qxg4
        • 2.Bb5#
      • 1...Bxa2
        • 2.Qxa2#
      • 1...Qc4
        • 2.Sc1#
      • 1...Qd4
        • 2.Sc5#
      • 1...Qe4
        • 2.Bb5#
      • 1...Qf4
        • 2.Bb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(d);S_CUTB(i)::P(E)
    • Q(d);P_PINB(G),S_CUTB(a)::S(J)
    • Q(d);::B(G)
    • Q(d);N_SPINQ(d),XR(H)::B(G)
    • S(b);N_GUARD,XQ(A)::S(D)
    • S(b);CHECK,N_GUARD::S(D),XS(b)
    • S(b);N_GUARD::S(D)
    • S(f);SBLOCK::B(G)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+S(D),DCHECK
    • Vars
      • S(b);CHECK::QAR(A)+S(D),DCHECK,XS(b)
      • Q(d);N_SPINQ(d),XR(H)::B(G)
      • B(i);OGATE,P_SPINB(i),XS(D)::QAR2(A),XB(i)
      • Q(d);S_CUTB(i)::QAR(A)+S(D)
      • Q(d);P_PINB(G),S_CUTB(a)::S(J)
      • Q(d);::B(G)
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Developed and maintained by Brian Stephenson.
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