MESON Chess Problem Database

Problem Display
PID: 169247 (8/2B1Q3/8/2K5/k7/1p6/8/n7 w - - 0 1)

Lincoln, Robert A

SuperProblem, 2017

8/2B1Q3/8/2K5/k7/1p6/8/n7

#2

3 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Be5?
      • threat
        • 2.Qa7#
      • 1...Ka3
        • 2.Qa7#
      • 1...Ka5
        • 2.Qa7#
      • 1...b2!
    • 1.Qf6?
      • threat
        • 2.Qxa1#
        • 2.Qa6#
      • 1...Ka3
        • 2.Qxa1#
      • 1...Sc2
        • 2.Qa6#
      • 1...b2!
    • 1.Qe6?
      • threat
        • 2.Qa6#
      • 1...b2
        • 2.Qa2#
      • 1...Ka3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qb4#
        • 2.Qa5#
        • 2.Qxa1#
      • 1...Ka3
        • 2.Qxa1#
      • 1...b2
        • 2.Qb4#
      • 1...Sc2
        • 2.Qa5#

Anticipated by 164527(2007)

This is a version of 166159

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR(C)
      • Vars
        • K(c);P-FLIGHT::QAR(C)
        • K(c);P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR2(C),XS(a)
        • S(a);::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • P(b);OGATE::QAR2(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);P-FLIGHT::QAR2(C),XS(a)
      • P(b);::QAR1(C)
      • S(a);::QAR1(C)
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