MESON Chess Problem Database

Problem Display
PID: 187376 (6Q1/7K/8/7k/8/8/R4P2/4b2n w - - 0 1)

Lincoln, Robert A

3rd HM., Kozhakina-25 JT, 2016

6Q1/7K/8/7k/8/8/R4P2/4b2n

#2

4 + 3

145 StrateGems 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Ra4?
      • threat
        • 2.Qd5#
        • 2.Qg4#
        • 2.Qg6#
      • 1...Sxf2
        • 2.Qd5#
        • 2.Qg6#
      • 1...Bd2
        • 2.Qg4#
        • 2.Qg6#
      • 1...Bc3
        • 2.Qg4#
        • 2.Qg6#
      • 1...Sg3
        • 2.Qg4#
        • 2.Qg6#
      • 1...Bb4!
    • 1.Ra6?
      • threat
        • 2.Rh6#
      • 1...Kh4
        • 2.Rh6#
      • 1...Bd2!
    • 1.f3?
      • threat
        • 2.Qg4#
      • 1...Kh4
        • 2.Rh2#
        • 2.Qg4#
      • 1...Sf2!
  • Keys
    • 1.f4!
      • threat
        • 2.Qg5#
      • 1...Kh4
        • 2.Rh2#
      • 1...Bh4
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • K(c);P-FLIGHT::R(A)
      • Refutation
        • B(a);
    • Try
      • P(B);
      • Threat
        • QAB1(D)
      • Refutation
        • S(b);
  • Actual
    • P(B);
    • Threat
      • QAR1(D)
    • Vars
      • K(c);P-FLIGHT::R(A)
      • B(a);SBLOCK::QAB1(D)
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