MESON Chess Problem Database

Problem Display
PID: 76581 (4B3/r1b2N1R/1p2pk1p/pKB3p1/1p4n1/3Q2N1/4r2q/5b2 w - - 0 1)

Holladay, Edgar Dinwiddie

Comm., American Chess Bulletin, 1948

4B3/r1b2N1R/1p2pk1p/pKB3p1/1p4n1/3Q2N1/4r2q/5b2

#2

7 + 13

6232 Holladay Chess Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sh5#
    • 1...Qf2
      • 2.Sh5#
    • 1...Qg2
      • 2.Sh5#
    • 1...Qh5
      • 2.Sxh5#
    • 1...Bh3
      • 2.Sh5#
    • 1...e5
      • 2.Qf5#
  • Tries
    • 1.Qd8+?
      • 1...Kg6
        • 2.Sxg5#
      • 1...Bxd8!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sxg4#
        • 2.Sd7#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Qxg3
        • 2.Sd7#
      • 1...Rxe5
        • 2.Rf7#
      • 1...Bxe5
        • 2.Qg6#
      • 1...Sxe5
        • 2.Be7#
      • 1...Qh3
        • 2.Sd7#
      • 1...Qh4
        • 2.Sd7#
      • 1...Qh5
        • 2.Sd7#
      • 1...Re4
        • 2.Sd7#
      • 1...Bh3
        • 2.Sd7#
      • 1...Bd6
        • 2.Sxg4#
      • 1...Bb8
        • 2.Sxg4#
      • 1...Bd8
        • 2.Sxg4#
      • 1...Sf2
        • 2.Sd7#
      • 1...Se3
        • 2.Sd7#
      • 1...h5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 14
    • REMOVED MATES = 4
  • Sets
    • Q(c);N_GUARD::S(B)
    • Q(c);N_GUARD::S(B),XQ(c)
    • B(a);S_CUTQ(c)::S(B)
    • P(i);N_GUARD::QAR1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(j);P-FLIGHT::B(G)+S(E),XP(g)
      • Refutation
        • B(m);XQ(A)
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • K(j);OGATEB,S_FLIGHT,XS(E)::QAB1(A)
      • Q(c);XS(B)::S(E)
      • R(b);P_PINB(D),P_PINQ(A),SBLOCK,XS(E)::R1(F)
      • B(m);SBLOCK,XS(E)::QAR1(A)
      • S(e);SBLOCK,XS(E)::B(D)
      • Q(c);::S(E)
      • R(b);P_PINQ(A)::S(E)
      • B(a);::S(E)
      • B(m);::S(E),XS(e)
      • S(e);::S(E)
      • P(k);::S(E)
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