MESON Chess Problem Database

Problem Display
PID: 182773 (6Q1/5n2/8/8/1n6/kPB5/8/1K6 w - - 0 1)

Ouellet, Charles

Problem Observer, 2015

6Q1/5n2/8/8/1n6/kPB5/8/1K6

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Bb2#
    • 1...Sg5
      • 2.Bb2#
    • 1...Sd6
      • 2.Bb2#
    • 1...Sh6
      • 2.Bb2#
    • 1...Sd8
      • 2.Bb2#
    • 1...Sh8
      • 2.Bb2#
  • Tries
    • 1.Qb8?
      • threat
        • 2.Qxb4#
      • 1...Kxb3
        • 2.Qxb4#
      • 1...Sa2
        • 2.Bb2#
      • 1...Sc2
        • 2.Bb2#
      • 1...Sd5
        • 2.Bb2#
      • 1...Sa6
        • 2.Bb2#
      • 1...Sc6
        • 2.Bb2#
      • 1...Sd3!
    • 1.Qf8?
      • threat
        • 2.Qxb4#
      • 1...Kxb3
        • 2.Qxb4#
      • 1...Sd6!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxb4#
      • 1...Kxb3
        • 2.Qxb4#
      • 1...Sa2
        • 2.Qa4#
      • 1...Sc2
        • 2.Qa4#
      • 1...Sd3
        • 2.Qa4#
      • 1...Sd5
        • 2.Qa4#
      • 1...Sa6
        • 2.Qa4#
      • 1...Sc6
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • S(c);::B(C)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAB1(D),XS(b)
      • Vars
        • K(a);P-FLIGHT,P_SPINS(b),XP(B)::QAR1(D),XS(b)
        • S(b);::B(C)
      • Refutation
        • S(b);
    • Try
      • Q(D);P_PINS(b)
      • Threat
        • QAB1(D),XS(b)
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT,XP(B)::QAR1(D),XS(b)
      • Refutation
        • S(c);N_SPINS(b)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D),XS(b)
    • Vars
      • K(a);P-FLIGHT,XP(B)::QAR1(D),XS(b)
      • S(b);OGATE::QAR1(D)
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Developed and maintained by Brian Stephenson.
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