MESON Chess Problem Database

Problem Display
PID: 24127 (k7/P1R5/8/n7/4K3/2p5/2Q5/8 w - - 0 1)

Lincoln, Robert A

3rd Comm., Smena, 1995

k7/P1R5/8/n7/4K3/2p5/2Q5/8

#2

4 + 3

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Tries
    • 1.Qb1?
      • threat
        • 2.Qb8#
      • 1...Sb7
        • 2.Qxb7#
      • 1...Sc6
        • 2.Qb7#
      • 1...Sb3!
    • 1.Qb3?
      • threat
        • 2.Qg8#
        • 2.Qb8#
      • 1...Sb7
        • 2.Qxb7#
      • 1...Sc6
        • 2.Qb7#
      • 1...Sc4
        • 2.Qb7#
        • 2.Qb8#
      • 1...Sxb3!
    • 1.Qf2?
      • threat
        • 2.Qf8#
      • 1...Sb7
        • 2.Rc8#
      • 1...Sc6!
    • 1.Qxc3?
      • threat
        • 2.Qh8#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb7!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qe8#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::QAB1(A),XS(b)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • S(b);SBLOCK::R(D)
      • Refutation
        • S(b);
    • Try
      • Q(A);XP(a)
      • Threat
        • QAB1(A)
      • Vars
        • S(b);N_GUARD::QAB(A),XS(b)
      • Refutation
        • S(b);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • S(b);N_GUARD::QAB(A),XS(b)
      • S(b);SBLOCK::R(D)
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