MESON Chess Problem Database

Problem Display
PID: 105590 (6B1/8/3P1Q2/4K3/3N4/8/1p6/k7 w - - 0 1)

Tuxen, Harri Viggo

Stella Polaris, 1967

6B1/8/3P1Q2/4K3/3N4/8/1p6/k7

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb1
      • 2.Qf1#
  • Tries
    • 1.Kf4?
      • 1...b1Q
        • 2.Sc2#
      • 1...b1S
        • 2.Sc2#
      • 1...b1B
        • 2.Sc2#
        • 2.Se2#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sc6#
      • 1...b1R
        • 2.Sc2#
      • 1...Kb1!
    • 1.Kf5?
      • 1...b1Q+
        • 2.Sc2#
      • 1...b1B+
        • 2.Sc2#
      • 1...b1S
        • 2.Sc2#
      • 1...b1R
        • 2.Sc2#
      • 1...Kb1!
    • 1.Qf2?
      • 1...Kb1
        • 2.Qe1#
        • 2.Qg1#
        • 2.Qf1#
      • 1...b1S
        • 2.Sb3#
        • 2.Qa2#
      • 1...b1B
        • 2.Sb3#
      • 1...b1R
        • 2.Qa2#
      • 1...b1Q!
  • Keys
    • 1.Ke4!
      • 1...b1Q+
        • 2.Sc2#
      • 1...b1B+
        • 2.Sc2#
      • 1...Kb1
        • 2.Qf1#
      • 1...b1S
        • 2.Sc2#
      • 1...b1R
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR(D)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(b);SBLOCK::QAB(D)+S(A),DCHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);CHECK,SBLOCK::QAB(D)+S(A),DCHECK
        • P(b);SBLOCK::QAB(D)+S(A),DCHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(b);SBLOCK::S(A)
        • P(b);OGATE::QAR1(D)
      • Refutation
        • P(b);
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • P(b);CHECK,SBLOCK::QAB(D)+S(A),DCHECK
      • K(a);P-FLIGHT::QAR(D)
      • P(b);SBLOCK::QAB(D)+S(A),DCHECK
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