MESON Chess Problem Database

Problem Display
PID: 46289 (3N4/3p4/8/3k1n2/8/2Q5/1B3K2/8 w - - 0 1)

Fedotov, V

3rd HM., Smena, 1989

3N4/3p4/8/3k1n2/8/2Q5/1B3K2/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2008
136 Problem Observer 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf3#
    • 1...Kd6
      • 2.Qe5#
    • 1...Se3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sh4
      • 2.Qd4#
    • 1...Sd6
      • 2.Qd4#
    • 1...Sh6
      • 2.Qd4#
    • 1...Se7
      • 2.Qd4#
    • 1...Sg7
      • 2.Qd4#
    • 1...d6
      • 2.Qc6#
  • Tries
    • 1.Ke1?
      • 1...Kd6
        • 2.Qe5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...Se7
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...d6
        • 2.Qc6#
      • 1...Ke4!
    • 1.Kg1?
      • 1...Kd6
        • 2.Qe5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...Se7
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...d6
        • 2.Qc6#
      • 1...Ke4!
    • 1.Ke2?
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Ke4
        • 2.Qe5#
        • 2.Qf3#
      • 1...Kd6
        • 2.Qe5#
      • 1...Se3
        • 2.Qd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...Se7
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...d6
        • 2.Qc6#
      • 1...Sg3+!
    • 1.Kf3?
      • 1...Sd4+
        • 2.Qxd4#
      • 1...Kd6
        • 2.Qe5#
      • 1...Se3
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...Se7
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...d6
        • 2.Qc6#
      • 1...Sh4+!
    • 1.Qb4?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...Se7
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...d6!
    • 1.Qd3+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kc5!
  • Keys
    • 1.Ba1!
      • 1...Ke4
        • 2.Qf3#
      • 1...Kd6
        • 2.Qe5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sh4
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sh6
        • 2.Qd4#
      • 1...Se7
        • 2.Qd4#
      • 1...Sg7
        • 2.Qd4#
      • 1...d6
        • 2.Qc6#

This anticipates 23079(1996)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(C)
    • K(a);P-FLIGHT::QAB1(C)
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(b);N_GUARD,SBLOCK::QAR1(C)
    • P(c);N_GUARD::QAB1(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD,SBLOCK::QAR1(C)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD,SBLOCK::QAR1(C)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • K(a);P-FLIGHT::QAB1(C)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD,SBLOCK::QAR1(C)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • S(b);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(C),XS(b)
        • K(a);P-FLIGHT::QAB1(C)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD,SBLOCK::QAR1(C)
        • P(c);N_GUARD::QAB1(C)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(C);
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD,SBLOCK::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAB1(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
      • S(b);N_GUARD::QAR1(C)
      • S(b);N_GUARD,SBLOCK::QAR1(C)
      • P(c);N_GUARD::QAB1(C)
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