MESON Chess Problem Database

Problem Display
PID: 11119 (8/8/8/4p3/8/nK1kP3/6Q1/5N2 w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Shakhmaty v SSSR, 1936

8/8/8/4p3/8/nK1kP3/6Q1/5N2

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Qc2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sc4
      • 2.Qc2#
    • 1...Sb5
      • 2.Qc2#
    • 1...e4
      • 2.Qd2#
  • Tries
    • 1.Qa2?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...e4
        • 2.Qd2#
      • 1...Ke4!
    • 1.Qb2?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...e4
        • 2.Qd2#
      • 1...Ke4!
    • 1.Qf2?
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...e4
        • 2.Qd2#
      • 1...Ke4!
    • 1.Qh2?
      • 1...Sb1
        • 2.Qc2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sc4
        • 2.Qc2#
      • 1...Sb5
        • 2.Qc2#
      • 1...e4
        • 2.Qd2#
      • 1...Ke4!
  • Keys
    • 1.Qg4!
      • 1...Sb1
        • 2.Qc4#
      • 1...Sc2
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sb5
        • 2.Qc4#
      • 1...e4
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • P(c);SBLOCK::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD::QAB1(B)
        • S(a);N_GUARD::QAB1(B),XS(a)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD::QAB1(B)
        • S(a);N_GUARD::QAB1(B),XS(a)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • S(a);N_GUARD::QAB1(B)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(c);SBLOCK::QAR2(B)
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