MESON Chess Problem Database

Problem Display
PID: 179108 (8/2K3N1/5k2/4N3/7R/5B2/8/Q7 w - - 0 1)

Syversen, O

Arbeidermagasinet, 1936

8/2K3N1/5k2/4N3/7R/5B2/8/Q7

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Kg5
        • 2.Qf6#
      • 1...Kg6
        • 2.Qf6#
      • 1...Ke7
        • 2.Qf6#
      • 1...Kf7!
    • 1.Sd7+?
      • 1...Kg5
        • 2.Qf6#
      • 1...Kg6
        • 2.Qf6#
      • 1...Ke7
        • 2.Qf6#
      • 1...Kf7!
    • 1.Rh6+?
      • 1...Kg5
        • 2.Qc1#
      • 1...Ke7
        • 2.Qa3#
      • 1...Kxg7!
    • 1.Qd4?
      • 1...Kg5
        • 2.Qf4#
        • 2.Qd8#
      • 1...Ke7
        • 2.Qd6#
        • 2.Qd8#
      • 1...Kxg7!
    • 1.Qd1?
      • 1...Kxe5
        • 2.Qa1#
        • 2.Qd4#
        • 2.Qd6#
      • 1...Kg5
        • 2.Qd8#
      • 1...Ke7
        • 2.Qd6#
        • 2.Qd8#
      • 1...Kxg7!
    • 1.Qg1?
      • 1...Kxe5
        • 2.Qd4#
        • 2.Qa1#
        • 2.Qg5#
      • 1...Ke7!
    • 1.Qa2?
      • 1...Kxe5
        • 2.Qe6#
        • 2.Qa1#
        • 2.Qb2#
      • 1...Ke7
        • 2.Qf7#
      • 1...Kxg7
        • 2.Qf7#
      • 1...Kg5!
    • 1.Qa3?
      • 1...Kxe5
        • 2.Qb2#
        • 2.Qd6#
        • 2.Qe7#
        • 2.Qa1#
        • 2.Qc3#
      • 1...Kg5
        • 2.Qe7#
      • 1...Kxg7!
    • 1.Qa6+?
      • 1...Kxe5
        • 2.Qa1#
        • 2.Qd6#
        • 2.Qe6#
      • 1...Kg5
        • 2.Rg4#
        • 2.Qh6#
      • 1...Ke7
        • 2.Qd6#
      • 1...Kxg7!
  • Keys
    • 1.Qa8!
      • 1...Kxe5
        • 2.Qa1#
      • 1...Kg5
        • 2.Qd8#
      • 1...Ke7
        • 2.Qd8#
      • 1...Kxg7
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);S_FLIGHT,XS(F)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB(A)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT::QAB1(A)
      • K(a);OGATEB,S_FLIGHT,XS(F)::QAB1(A)
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