MESON Chess Problem Database

Problem Display
PID: 134626 (5RR1/4pK2/8/5k2/1Q6/6n1/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2009

5RR1/4pK2/8/5k2/1Q6/6n1/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Ke7#
      • 2.Qg4#
  • Tries
    • 1.Rxg3?
      • 1...Ke5
        • 2.Rg5#
      • 1...e5
        • 2.Ke7#
        • 2.Qg4#
      • 1...e6!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qf4#
      • 1...Ke5
        • 2.Qc5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se2
        • 2.Qe4#
      • 1...Sh5
        • 2.Qe4#
      • 1...e5
        • 2.Ke7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);XS(a)
      • Vars
        • K(b);P-FLIGHT::R(D)
      • Refutation
        • P(c);
  • Actual
    • R(D);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
      • P(c);SBLOCK::R(C)+K(B)
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