MESON Chess Problem Database

Problem Display
PID: 234672 (6K1/8/2N1N3/5k2/8/3n4/6Q1/7B w - - 0 1)

Lincoln, Robert A

Kudesnik, 2009

6K1/8/2N1N3/5k2/8/3n4/6Q1/7B

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qh3#
        • 2.Qe4#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Sf2
        • 2.Qf3#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Sf4
        • 2.Sed4#
        • 2.Sg7#
        • 2.Qg5#
      • 1...Sc5
        • 2.Qf3#
        • 2.Qh3#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Se5+!
    • 1.Scd4+?
      • 1...Kf6
        • 2.Qg5#
        • 2.Qg7#
      • 1...Ke5!
    • 1.Scd8?
      • threat
        • 2.Qg5#
      • 1...Kf6
        • 2.Qg5#
      • 1...Ke5!
    • 1.Sed4+?
      • 1...Kf6
        • 2.Qg7#
      • 1...Kf4!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Qh3#
        • 2.Qe4#
        • 2.Qg6#
      • 1...Kxe6
        • 2.Qd5#
      • 1...Sf2
        • 2.Qg6#
      • 1...Sf4
        • 2.Sed4#
      • 1...Sc5
        • 2.Qh3#
        • 2.Qg6#
      • 1...Se5
        • 2.Scd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • DUALS(4)
      • Refutation
        • S(a);CHECK
    • Try
      • S(C);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • DUALS(3)
    • Vars
      • K(b);S_FLIGHT,XS(D)::QAB1(B)
      • S(a);::QAB1(B)
      • S(a);SBLOCK::S(D)
      • S(a);SBLOCK::S(C)
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