MESON Chess Problem Database

Problem Display
PID: 143515 (1B2R3/2r1b2N/1PPP3p/1K2k3/2P1p1Q1/5b2/3P3N/1B3R2 w - - 0 1)

Holladay, Edgar Dinwiddie

Holladay, John Courtenay

5th Prize, New York Post, 1946-1948

1B2R3/2r1b2N/1PPP3p/1K2k3/2P1p1Q1/5b2/3P3N/1B3R2

#2

13 + 6

70 American Chess Problemist 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sxf3#
    • 1...Kxd6
      • 2.Bxc7#
  • Tries
    • 1.Sxf3+?
      • 1...Kxd6
        • 2.Bxc7#
        • 2.Qd7#
      • 1...exf3!
    • 1.Rxe7+?
      • 1...Kd4
        • 2.Sxf3#
        • 2.Qg7#
      • 1...Kxd6
        • 2.Re6#
        • 2.Qe6#
        • 2.Qd7#
      • 1...Rxe7!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qc5#
        • 2.Qd5#
      • 1...Kxd6
        • 2.Bxc7#
        • 2.Qd5#
        • 2.c5#
      • 1...Kxf5!
    • 1.Qxe4+?
      • 1...Kxd6
        • 2.Bxc7#
        • 2.Qxe7#
        • 2.c5#
      • 1...Bxe4!
    • 1.Qf4+?
      • 1...Kd4
        • 2.Sxf3#
      • 1...Ke6
        • 2.Sf8#
        • 2.Qf6#
      • 1...Kxf4!
    • 1.Qg5+?
      • 1...Kd4
        • 2.Qc5#
        • 2.Qd5#
      • 1...Kxd6
        • 2.Qxe7#
        • 2.Qd5#
      • 1...Ke6
        • 2.Qf6#
        • 2.Qd5#
      • 1...hxg5!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Sxf3#
      • 1...Kf5
        • 2.Qxe4#
      • 1...Kxd6
        • 2.Qxe7#
      • 1...Ke6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(f),P_SPINP(b),S_FLIGHT::S(D),XB(a)
    • K(c);N_SPINB(f),OGATEB,P_SPINR(e),S_FLIGHT,XP(J)::B(L),XR(e)
  • Tries
    • Try
      • S(D);CHECK,XB(a)
      • Refutation
        • P(b);XS(D)
    • Try
      • R(M);CHECK,XB(f)
      • Refutation
        • R(e);XR(M)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);N_SPINB(f),P-FLIGHT,P_SPINB(a),P_SPINP(b),XQ(F)
    • Try
      • Q(F);CHECK,XP(b)
      • Refutation
        • B(a);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);N_SPINB(f),P_SPINP(b),S_FLIGHT::S(D),XB(a)
      • Refutation
        • K(c);N_SPINB(f),P_SPINB(a),S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • P(d);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • K(c);N_SPINB(f),P_SPINP(b),S_FLIGHT::S(D),XB(a)
      • K(c);N_SPINB(f),P-FLIGHT,P_SPINB(a),P_SPINP(b)::QAB1(F),XP(b)
      • K(c);N_SPINB(f),P_SPINR(e),S_FLIGHT,XP(J)::QAB1(F),XB(f)
      • K(c);P-FLIGHT::QAR1(F)
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