MESON Chess Problem Database

Problem Display
PID: 77357 (8/1K6/3pp1N1/1N1k2p1/1Qp1p3/2r3b1/3P2R1/1b1rqn1B w - - 0 1)

Holladay, Edgar Dinwiddie

British Chess Magazine, 1980

8/1K6/3pp1N1/1N1k2p1/1Qp1p3/2r3b1/3P2R1/1b1rqn1B

#2

7 + 12

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Bf2
      • 2.Qxd6#
    • 1...Bh4
      • 2.Qxd6#
    • 1...Be5
      • 2.Se7#
    • 1...e5
      • 2.Qxd6#
  • Tries
    • 1.dxc3?
      • threat
        • 2.Sc7#
      • 1...e3
        • 2.Rc2#
        • 2.Rd2#
      • 1...Qxc3!
  • Keys
    • 1.d4!
      • threat
        • 2.Se7#
      • 1...Rxd4
        • 2.Sc7#
      • 1...cxd4 ep
        • 2.Qd4#
      • 1...exd4 ep
        • 2.Re2#
      • 1...e3
        • 2.Rc2#
      • 1...e5
        • 2.Qxd6#

This is after

After a problem by David Shire

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(f);N_GUARD::QAR1(D),XP(k)
    • B(f);SBLOCK::S(F)
    • P(l);S_CUTB(f)::QAR1(D),XP(k)
  • Tries
    • Try
      • P(B);XR(e)
      • Threat
        • S(E)
      • Refutation
        • Q(c);XP(B)
  • Actual
    • P(B);
    • Threat
      • S(F)
    • Vars
      • R(b);SBLOCK,XP(B)::S(E)
      • P(g);EP,OGATE,XP(B)::QAR1(D)
      • P(h);EP,OGATEB,XP(B)::B(A)+R(C)
      • P(h);OGATEB::B(A)+R(C)
      • P(l);S_CUTB(f)::QAR1(D),XP(k)
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