MESON Chess Problem Database

Problem Display
PID: 76107 (3K4/8/3N4/3n4/kb1Q4/3N4/2P5/8 w - - 0 1)

Cuppini, Alessandro

Troll, 2004

3K4/8/3N4/3n4/kb1Q4/3N4/2P5/8

#2

5 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ka3
      • 2.Qa1#
    • 1...Ka5
      • 2.Qa7#
    • 1...Sc3
      • 2.Qxb4#
    • 1...Se3
      • 2.Qxb4#
    • 1...Sf4
      • 2.Qxb4#
    • 1...Sb6
      • 2.Qxb4#
    • 1...Sf6
      • 2.Qxb4#
    • 1...Sc7
      • 2.Qxb4#
    • 1...Se7
      • 2.Qxb4#
  • Tries
    • 1.Sb2+?
      • 1...Ka5
        • 2.Qa7#
      • 1...Ka3!
    • 1.Sc5+?
      • 1...Ka3
        • 2.Qa1#
      • 1...Ka5!
    • 1.Sb7?
      • 1...Ka3
        • 2.Qa1#
      • 1...Sc3
        • 2.Qxb4#
      • 1...Se3
        • 2.Qxb4#
      • 1...Sf4
        • 2.Qxb4#
      • 1...Sb6
        • 2.Qxb4#
      • 1...Sf6
        • 2.Qxb4#
      • 1...Sc7
        • 2.Qxb4#
      • 1...Se7
        • 2.Qxb4#
      • 1...Kb5!
  • Keys
    • 1.Qc4!
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5
        • 2.Qb5#
      • 1...Sc3
        • 2.Qxb4#
      • 1...Se3
        • 2.Qxb4#
      • 1...Sf4
        • 2.Qxb4#
      • 1...Sb6
        • 2.Qxb4#
      • 1...Sf6
        • 2.Qxb4#
      • 1...Sc7
        • 2.Qxb4#
      • 1...Se7
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINB(b),P-FLIGHT::QAR2(C)
    • S(c);N_GUARD::QAR1(C),XB(b)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • S(B);CHECK
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR2(C)
        • S(c);N_GUARD::QAR1(C),XB(b)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT::QAR1(C)
      • S(c);N_GUARD::QAR1(C),XB(b)
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