MESON Chess Problem Database

Problem Display
PID: 224495 (8/8/2Kp4/5pr1/3pkB1r/6p1/3Q2P1/8 w - - 0 1)

Gold, Samuel

Aftenposten, 1887

8/8/2Kp4/5pr1/3pkB1r/6p1/3Q2P1/8

#2

4 + 7

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Qe2#
    • 1...d3
      • 2.Qe3#
      • 2.Qb4#
  • Tries
    • 1.Qc2+?
      • 1...d3
        • 2.Qa4#
        • 2.Qc4#
      • 1...Kxf4!
    • 1.Qd3+?
      • 1...Kxf4
        • 2.Qxd4#
      • 1...Kxd3!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qf3#
      • 1...Kxf4
        • 2.Qxd4#
      • 1...Rxf4
        • 2.Qe2#
      • 1...d3
        • 2.Qa4#

This anticipates 51031(1913), 190141(1913), 121520(1948), 224811(2004)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(d);SBLOCK,XB(C)::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(c);P-FLIGHT,XB(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,XB(C)::QAR2(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);P-FLIGHT,XB(C)::QAR2(A),XP(b)
      • R(d);SBLOCK,XB(C)::QAR2(A)
      • P(b);OGATEB,SBLOCK::QAR(A)
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