MESON Chess Problem Database

Problem Display
PID: 151463 (8/8/2Q5/2K5/R1p5/1k6/8/8 w - - 0 1)

Williams, JD

American Chess Bulletin, 1906

8/8/2Q5/2K5/R1p5/1k6/8/8

#2

3 + 2

119 Tidskrift for Schack 1909
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Ra2?
      • 1...Kc3
        • 2.Qf3#
      • 1...c3
        • 2.Qa4#
        • 2.Qd5#
        • 2.Qe6#
      • 1...Kxa2!
  • Keys
    • 1.Qg2!
      • 1...Kc3
        • 2.Ra3#
      • 1...Kxa4
        • 2.Qa2#
      • 1...c3
        • 2.Qa2#

This anticipates 161525(1996), 172275(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::QAR(C)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Vars
      • K(a);P-FLIGHT::R(A)
      • K(a);S_FLIGHT,XR(A)::QAR2(C)
      • P(b);SBLOCK::QAB1(C)
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