MESON Chess Problem Database

Problem Display
PID: 76106 (8/8/2P5/1Q6/N7/2pK4/1PN5/1k6 w - - 0 1)

Degener, Udo

Degenkolbe, Mirko

Troll, 2004

8/8/2P5/1Q6/N7/2pK4/1PN5/1k6

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ka2
      • 2.Sxc3#
    • 1...cxb2
      • 2.Qxb2#
  • Tries
    • 1.Kxc3?
      • 1...Kc1
        • 2.Qf1#
      • 1...Ka2!
    • 1.Qb3?
      • 1...cxb2
        • 2.Qxb2#
      • 1...Kc1!
    • 1.Qb4?
      • 1...Ka2
        • 2.Sxc3#
      • 1...cxb2
        • 2.Qxb2#
      • 1...Kc1!
    • 1.Qd5?
      • 1...Kc1
        • 2.Qh1#
      • 1...cxb2!
    • 1.Qe5?
      • 1...Kc1
        • 2.Qe1#
      • 1...cxb2
        • 2.Qxb2#
      • 1...Ka2!
    • 1.Qg5?
      • 1...cxb2
        • 2.Sc3#
      • 1...Ka2!
    • 1.Qb7?
      • 1...Ka2
        • 2.Sxc3#
      • 1...cxb2
        • 2.Qxb2#
      • 1...Kc1!
    • 1.Qb8?
      • 1...Ka2
        • 2.Sxc3#
      • 1...cxb2
        • 2.Qxb2#
      • 1...Kc1!
    • 1.bxc3+?
      • 1...Ka2
        • 2.Qb2#
      • 1...Kc1!
    • 1.c7?
      • 1...Ka2
        • 2.Sxc3#
      • 1...cxb2
        • 2.Qxb2#
      • 1...Kc1!
  • Keys
    • 1.Qb6!
      • 1...Kc1
        • 2.Qg1#
      • 1...Ka2
        • 2.Sxc3#
      • 1...cxb2
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(D),XP(b)
    • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::S(D),XP(b)
        • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR(E)
      • Refutation
        • P(b);XP(A)
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR2(E)
        • P(b);OGATE,XP(A)::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK,XP(A)::S(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::S(D),XP(b)
        • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::S(D),XP(b)
        • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(A);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • P(F);
      • Vars
        • K(a);S_FLIGHT::S(D),XP(b)
        • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);P-FLIGHT::QAR(E)
      • K(a);S_FLIGHT::S(D),XP(b)
      • P(b);OGATE,P_SPINP(b),XP(A)::QAR1(E),XP(b)
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