MESON Chess Problem Database

Problem Display
PID: 85816 (1K5k/2Q5/8/8/1R6/1pp5/1q6/8 w - - 0 1)

Speckmann, Werner

Skakbladet, 1967

1K5k/2Q5/8/8/1R6/1pp5/1q6/8

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rb7?
      • threat
        • 2.Qd8#
        • 2.Qg7#
        • 2.Qh7#
        • 2.Qc8#
      • 1...Kg8
        • 2.Qd8#
        • 2.Qg7#
        • 2.Qc8#
      • 1...Qa3
        • 2.Qg7#
        • 2.Qh7#
      • 1...Qb1
        • 2.Qd8#
        • 2.Qg7#
        • 2.Qc8#
      • 1...Qc2
        • 2.Qd8#
        • 2.Qg7#
        • 2.Qc8#
      • 1...Qd2
        • 2.Qg7#
        • 2.Qh7#
      • 1...Qe2
        • 2.Qg7#
        • 2.Qh7#
      • 1...Qf2
        • 2.Qg7#
        • 2.Qh7#
      • 1...Qg2
        • 2.Qh7#
      • 1...c2
        • 2.Qd8#
        • 2.Qh7#
        • 2.Qc8#
      • 1...Qh2!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qg7#
      • 1...Qh2
        • 2.Qxh2#
      • 1...c2
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(4)
      • Vars
        • Q(a);::QAR1(B)
      • Refutation
        • Q(a);P_PINQ(B)
  • Actual
    • R(A);
    • Threat
      • QAB1(B)
    • Vars
      • Q(a);N_GUARD,P_PINQ(B)::QAR(B),XQ(a)
      • P(c);S_CUTQ(a)::QAR(B)
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Developed and maintained by Brian Stephenson.
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