MESON Chess Problem Database

Problem Display
PID: 53099 (3BB1Kn/5Q2/6Rp/R2q3k/8/8/8/2b5 w - - 0 1)

Holladay, Edgar Dinwiddie

3rd Prize, British Chess Magazine, 1953

3BB1Kn/5Q2/6Rp/R2q3k/8/8/8/2b5

#2

6 + 5

268 Chess Life 1954
1111 Busmen's Chess Review 1986
6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa5
      • 2.Qf3#
    • 1...Qb5
      • 2.Qf3#
    • 1...Qc5
      • 2.Qf3#
    • 1...Qe5
      • 2.Qf3#
    • 1...Ba3
      • 2.Rxd5#
      • 2.Qxd5#
  • Tries
    • 1.Rg1+?
      • 1...Sxf7
        • 2.Bxf7#
      • 1...Sg6!
    • 1.Rg2+?
      • 1...Sxf7
        • 2.Bxf7#
      • 1...Sg6!
    • 1.Rg3+?
      • 1...Sxf7
        • 2.Bxf7#
      • 1...Sg6!
    • 1.Rg7+?
      • 1...Sxf7
        • 2.Bxf7#
      • 1...Sg6!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Rxh6#
      • 1...Sxg6
        • 2.Bxg6#
      • 1...Qg5
        • 2.Qh3#
      • 1...Qf5
        • 2.Qe2#
      • 1...Sf7
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_PINQ(C),N_SPINQ(b),XR(A)::QAB(C)
    • Q(b);N_PINQ(C)::QAB(C)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(e);OGATE,P_SPINS(e),XQ(C)::B(E),XS(e)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • R(B);CHECK
      • Vars
        • S(e);OGATE,P_SPINS(e),XQ(C)::B(E),XS(e)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • R(B);CHECK
      • Vars
        • S(e);OGATE,P_SPINS(e),XQ(C)::B(E),XS(e)
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • R(B);CHECK
      • Vars
        • S(e);OGATE,P_SPINS(e),XQ(C)::B(E),XS(e)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • Q(C);
    • Threat
      • B(E)+R(B),DCHECK,XP(d)
    • Vars
      • S(e);OGATE,P_SPINS(e),XR(B)::B(E),XS(e)
      • Q(b);N_PINQ(C),P_PINR(B)::QAR2(C)
      • Q(b);N_PINQ(C)::QAB(C)
      • S(e);N_PINQ(C)::QAB1(C)
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