MESON Chess Problem Database

Problem Display
PID: 71557 (8/1pQp3N/1p2kPB1/1K6/3P2n1/8/8/8 w - - 0 1)

Ceder, Sven Ture

Source?, 1959

8/1pQp3N/1p2kPB1/1K6/3P2n1/8/8/8

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd7#
    • 1...Sf2
      • 2.Qe5#
    • 1...Sh2
      • 2.Qe5#
    • 1...Se3
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sxf6
      • 2.Qe5#
    • 1...Sh6
      • 2.Qe5#
    • 1...d5
      • 2.Qe7#
    • 1...d6
      • 2.Qf7#
  • Tries
    • 1.Kb4?
      • 1...Kd5
        • 2.Qxd7#
      • 1...Sxf6
        • 2.Qe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf7#
      • 1...b5!
    • 1.Kxb6?
      • 1...Sxf6
        • 2.Qe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf7#
      • 1...Kd5!
    • 1.Sg5+?
      • 1...Kd5
        • 2.Qxd7#
      • 1...Kxf6!
    • 1.Sf8+?
      • 1...Kd5
        • 2.Qxd7#
      • 1...Kxf6!
    • 1.Qc5?
      • 1...Sxf6
        • 2.Sg5#
        • 2.Sf8#
        • 2.Qe5#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
        • 2.d5#
      • 1...Sh6
        • 2.Qe5#
      • 1...bxc5!
  • Keys
    • 1.Qf4!
      • 1...Kd5
        • 2.Bf7#
      • 1...Sxf6
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...d6
        • 2.Qf5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...d5
        • 2.Sf8#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR2(E),XP(e)
    • S(a);N_GUARD::QAR1(E)
    • S(a);N_GUARD::QAR1(E),XS(a)
    • S(a);N_GUARD,XP(C)::QAR1(E)
    • P(e);OGATE,SBLOCK::QAR1(E)
    • P(e);OGATE,SBLOCK::QAB1(E)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR2(E),XP(e)
        • S(a);N_GUARD,XP(C)::QAR1(E)
        • S(a);N_GUARD::QAR1(E)
        • S(a);N_GUARD::QAR1(E),XS(a)
        • P(e);OGATE,SBLOCK::QAR1(E)
        • P(e);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • K(B);P-FLIGHT,XP(b)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR1(E)
        • S(a);N_GUARD::QAR1(E)
        • S(a);N_GUARD::QAR1(E),XS(a)
        • P(e);OGATE,SBLOCK::QAR1(E)
        • P(e);OGATE,SBLOCK::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(E),XP(e)
      • Refutation
        • K(c);P-FLIGHT,XP(C)
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(E),XP(e)
      • Refutation
        • K(c);P-FLIGHT,XP(C)
    • Try
      • Q(E);
      • Vars
        • P(e);SBLOCK::QAR1(E)
        • P(e);SBLOCK::QAB1(E)
        • S(a);N_GUARD::QAR1(E)
      • Refutation
        • P(b);XQ(E)
  • Actual
    • Q(E);
    • Vars
      • K(c);S_FLIGHT::B(D)
      • S(a);N_GUARD,XP(C)::QAR1(E)
      • S(a);N_GUARD::QAR1(E),XS(a)
      • P(e);SBLOCK::QAB1(E)
      • S(a);N_GUARD::QAR1(E)
      • P(e);SBLOCK::S(F)
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