MESON Chess Problem Database

Problem Display
PID: 76873 (b7/2p4K/N6p/1p2nN2/2kB2pr/b3Q2q/2Pn4/1r5B w - - 0 1)

Holladay, Edgar Dinwiddie

The Problemist, 1954

b7/2p4K/N6p/1p2nN2/2kB2pr/b3Q2q/2Pn4/1r5B

#2

7 + 12

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qc3#
    • 1...Qh2
      • 2.Qc3#
    • 1...Sc6
      • 2.Qe6#
    • 1...g3
      • 2.Qc3#
    • 1...c5
      • 2.Sd6#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Qd4#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Sf3
        • 2.Qd3#
      • 1...b4
        • 2.Qc5#
      • 1...Bb2
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...g3
        • 2.Qe2#
        • 2.Qc3#
        • 2.Qd3#
      • 1...c5
        • 2.Sd6#
      • 1...Sb3!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Qd4#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Bxb2
        • 2.Qc5#
      • 1...Sdf3
        • 2.Qb3#
      • 1...Sef3
        • 2.Qd3#
      • 1...b4
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sb3
        • 2.cxb3#
      • 1...Sc6
        • 2.Qe6#
      • 1...g3
        • 2.Qc3#
      • 1...c5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(d);N_GUARD::QAR1(C)
    • S(i);OGATE::QAB(C)
    • P(f);S_CUTQ(d)::QAR1(C)
    • P(k);N_GUARD,S_CUTB(c)::S(E)
  • Tries
    • Try
      • B(D);XS(i)
      • Threat
        • QAR1(C)
      • Vars
        • Q(d);XQ(C)::S(E),XQ(d)
        • S(b);S_CUTQ(d)::QAB1(C)
        • P(h);S_CUTB(c)::QAR1(C)
        • B(c);N_GUARD::QAR1(C)
        • B(c);N_GUARD::QAR1(C),XB(c)
        • P(k);N_GUARD,S_CUTB(c)::S(E)
      • Refutation
        • S(b);
  • Actual
    • B(D);
    • Threat
      • QAR1(C)
    • Vars
      • Q(d);XQ(C)::S(E),XQ(d)
      • B(c);N_GUARD,XB(D)::QAR1(C)
      • S(b);N_GUARD,S_CUTQ(d)::QAB1(C)
      • S(i);N_GUARD,S_CUTQ(d)::QAB1(C)
      • P(h);S_CUTB(c)::QAR1(C)
      • B(c);N_GUARD::QAR1(C),XB(c)
      • S(b);OGATE::P(B),XS(b)
      • S(i);OGATE::QAB(C)
      • P(f);S_CUTQ(d)::QAR1(C)
      • P(k);N_GUARD,S_CUTB(c)::S(E)
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