MESON Chess Problem Database

Problem Display
PID: 104611 (n2K4/3N4/1pQ5/k7/p7/P7/8/8 w - - 0 1)

Subotic, Miroslav

Mezija, 1999

n2K4/3N4/1pQ5/k7/p7/P7/8/8

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc7
      • 2.Qxb6#
    • 1...b5
      • 2.Qxa8#
  • Tries
    • 1.Ke7?
      • 1...Sc7
        • 2.Qxb6#
      • 1...b5
        • 2.Qxa8#
      • 1...Ka6!
    • 1.Sc5?
      • threat
        • 2.Qxa4#
      • 1...b5
        • 2.Sb7#
        • 2.Qa6#
      • 1...bxc5!
    • 1.Sb8?
      • 1...b5
        • 2.Qa6#
      • 1...Sc7!
    • 1.Qd5+?
      • 1...b5
        • 2.Qxa8#
      • 1...Ka6!
    • 1.Qb7?
      • 1...Sc7
        • 2.Qxb6#
      • 1...b5
        • 2.Qxa8#
        • 2.Qa7#
      • 1...Kb5!
  • Keys
    • 1.Kc8!
      • 1...Ka6
        • 2.Qxa4#
      • 1...Sc7
        • 2.Qxb6#
      • 1...b5
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD::QAB1(B),XP(c)
    • P(c);SBLOCK::QAR(B),XS(d)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • S(d);N_GUARD::QAB1(B),XP(c)
        • P(c);SBLOCK::QAR(B),XS(d)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • S(C);
      • Threat
        • QAR1(B),XP(a)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);
      • Vars
        • P(c);OGATE::QAR1(B)
      • Refutation
        • S(d);
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);P_SPINP(c),SBLOCK::QAR(B),XS(d)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(d);N_GUARD::QAB1(B),XP(c)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(b);P-FLIGHT,P_SPINP(c)::QAR2(B),XP(a)
      • S(d);N_GUARD::QAB1(B),XP(c)
      • P(c);SBLOCK::QAR(B),XS(d)
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