MESON Chess Problem Database

Problem Display
PID: 7869 (8/8/p7/2Q5/3p4/3K4/6N1/n2k4 w - - 0 1)

Tomasevic, Milos

10th Place, Pozarevac, 1994

8/8/p7/2Q5/3p4/3K4/6N1/n2k4

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sb3
      • 2.Qc2#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qe1#
        • 2.Qd2#
        • 2.Qb1#
      • 1...Sc2
        • 2.Qd2#
        • 2.Qb1#
      • 1...Sb3
        • 2.Qe1#
      • 1...Kc1!
    • 1.Qxd4?
      • threat
        • 2.Qxa1#
        • 2.Qg1#
      • 1...Kc1
        • 2.Qxa1#
      • 1...Sb3
        • 2.Qg1#
      • 1...Sc2!
    • 1.Qc3?
      • threat
        • 2.Qxa1#
        • 2.Qe1#
        • 2.Qd2#
      • 1...Sc2
        • 2.Qd2#
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qe1#
        • 2.Qc2#
      • 1...dxc3!
    • 1.Qc4?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...a5!
    • 1.Qc6?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...a5!
    • 1.Qc7?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...a5!
    • 1.Qc8?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...a5!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qe1#
        • 2.Qd2#
        • 2.Qxa1#
      • 1...Kc1
        • 2.Qxa1#
      • 1...Sc2
        • 2.Qd2#
      • 1...Sb3
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(a);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::QAR1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR2(C),XS(a)
        • S(a);::QAR(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);
      • Vars
        • S(a);N_GUARD::QAB1(C),XS(a)
        • S(a);N_GUARD::QAB1(C)
      • Refutation
        • P(d);
  • Actual
    • Q(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR2(C),XS(a)
      • S(a);::QAR1(C)
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