MESON Chess Problem Database

Problem Display
PID: 9415 (6Q1/2RB4/p7/1p6/1k6/8/K7/8 w - - 0 1)

Shinkman, William Anthony

Falkirk Herald, 1900

(First published on Wed Jun 20 1900)

6Q1/2RB4/p7/1p6/1k6/8/K7/8

#2

4 + 3

3757 Schachminiaturen I 1902
3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Qb3#
      • 2.Qg4#
  • Tries
    • 1.Rc4+?
      • 1...Ka5
        • 2.Qd8#
      • 1...bxc4!
    • 1.Qg3?
      • threat
        • 2.Qa3#
      • 1...Ka4
        • 2.Qa3#
      • 1...Ka5!
    • 1.Qf8+?
      • 1...Ka4
        • 2.Qa3#
      • 1...Ka5!
  • Keys
    • 1.Qd8!
      • 1...Ka4
        • 2.Rc4#
      • 1...Ka5
        • 2.Rc4#
      • 1...a5
        • 2.Qh4#

This anticipates 121634(1991)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(D)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,P_SPINP(b)::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::R(B)
      • K(a);S_FLIGHT::QAB(D)+R(B)
      • P(c);SBLOCK::QAR(D)
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