MESON Chess Problem Database

Problem Display
PID: 81657 (8/8/1N2K3/8/8/pk6/3Q2p1/4N3 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 2008

8/8/1N2K3/8/8/pk6/3Q2p1/4N3

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sc1#
        • 2.Sc5#
      • 1...a2
        • 2.Qb2#
      • 1...g1B
        • 2.Sc1#
      • 1...g1R
        • 2.Sc5#
      • 1...g1Q!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qc2#
      • 1...Ka4
        • 2.Qb4#
      • 1...Kc4
        • 2.Qb4#
      • 1...a2
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);N_GUARD::QAR1(B)
        • P(a);::S(A)
      • Refutation
        • P(a);
  • Actual
    • S(C);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);S_FLIGHT::QAR1(B)
      • P(b);SBLOCK::QAR1(B)
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