MESON Chess Problem Database

Problem Display
PID: 66569 (6N1/1R6/3p4/3k1p2/5P2/8/2K5/Q5B1 w - - 0 1)

van der Goot, HH

Tijdschrift vd NSB, 1897

6N1/1R6/3p4/3k1p2/5P2/8/2K5/Q5B1

#2

6 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qd4#
      • 2.Qa2#
  • Tries
    • 1.Sf6+?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qf1#
        • 2.Qa2#
        • 2.Qa4#
        • 2.Qa6#
      • 1...Kc6
        • 2.Qa6#
      • 1...Ke6!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Re7#
      • 1...Kc6!
    • 1.Qe5+?
      • 1...Kc4
        • 2.Qd4#
        • 2.Qb5#
      • 1...Kc6
        • 2.Qb5#
      • 1...dxe5!
    • 1.Qd1+?
      • 1...Kc4
        • 2.Qd3#
        • 2.Qd4#
      • 1...Ke4
        • 2.Rb4#
      • 1...Ke6
        • 2.Re7#
      • 1...Kc6!
    • 1.Qf1?
      • 1...Ke4
        • 2.Sf6#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6!
    • 1.Qa5+?
      • 1...Kc4
        • 2.Rb4#
        • 2.Rc7#
        • 2.Qa2#
        • 2.Qb5#
      • 1...Kc6
        • 2.Rc7#
        • 2.Qb5#
      • 1...Ke6
        • 2.Re7#
      • 1...Ke4!
  • Keys
    • 1.Qa8!
      • 1...Kc4
        • 2.Qa2#
      • 1...Ke4
        • 2.Rb4#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R(E)
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::S(F)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT::QAB(A)+R(E),DCHECK
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT::R1(E)
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