MESON Chess Problem Database

Problem Display
PID: 207038 (8/3p4/1N4R1/k7/1q6/8/P2B4/K4Q2 w - - 0 1)

Goldsmith, Louis A

New York Clipper, 1862

8/3p4/1N4R1/k7/1q6/8/P2B4/K4Q2

#2

6 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3+
      • 2.Bxc3#
  • Tries
    • 1.Rd6?
      • 1...Qc3+
        • 2.Bxc3#
      • 1...Qxd2!
    • 1.Qc4?
      • threat
        • 2.Bxb4#
      • 1...Qc3+
        • 2.Bxc3#
      • 1...Qxd2
        • 2.Qa4#
      • 1...d6!
  • Keys
    • 1.a4!
      • threat
        • 2.Qb5#
      • 1...Qc3+
        • 2.Bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(a);CHECK,OGATEB::B(D),XQ(a)
  • Tries
    • Try
      • R(F);
      • Vars
        • Q(a);CHECK,OGATEB::B(D),XQ(a)
      • Refutation
        • Q(a);N_SPINQ(a),XB(D)
    • Try
      • Q(B);
      • Threat
        • B(D),XQ(a)
      • Vars
        • Q(a);CHECK,OGATEB::B(D),XQ(a)
        • Q(a);N_SPINQ(a),OGATE,XB(D)::QAR1(B)
      • Refutation
        • P(c);
  • Actual
    • P(C);
    • Threat
      • QAR1(B)
    • Vars
      • Q(a);CHECK,OGATEB::B(D),XQ(a)
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