MESON Chess Problem Database

Problem Display
PID: 54367 (8/8/6B1/8/6K1/4N3/1p1pk3/6Q1 w - - 0 1)

Lincoln, Robert A

3rd Prize, Amirov MT, 2003

8/8/6B1/8/6K1/4N3/1p1pk3/6Q1

#2

4 + 3

145 StrateGems 2004
133 The Problemist Supplement 2009
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Qg2+?
      • 1...Ke1
        • 2.Qf1#
      • 1...Kxe3!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sd4#
      • 1...d1Q
        • 2.Qg2#
      • 1...d1S
        • 2.Qe1#
      • 1...d1B
        • 2.Qe1#
        • 2.Qg2#
      • 1...d1R
        • 2.Qg2#

This anticipates 267423(2013)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XS(B)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • P(b);SBLOCK::QAR2(A)
      • P(b);N_GUARD::QAR1(A)
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