MESON Chess Problem Database

Problem Display
PID: 51849 (8/5p2/1N1B1P2/2N5/1n1k2n1/6Q1/8/6K1 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

Morning Post, 1920

(First published on Mon Apr 12 1920)

8/5p2/1N1B1P2/2N5/1n1k2n1/6Q1/8/6K1

#2

6 + 4

56 The Problemist 2004
5454 Near Snap 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qd3#
    • 1...Sc2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sd5
      • 2.Qd3#
    • 1...Sa6
      • 2.Qd3#
    • 1...Sc6
      • 2.Qd3#
    • 1...Sf2
      • 2.Qe5#
    • 1...Sh2
      • 2.Qe5#
    • 1...Se3
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sxf6
      • 2.Qe5#
    • 1...Sh6
      • 2.Qe5#
  • Tries
    • 1.Kh1?
      • 1...Sxf6
        • 2.Qe5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se3
        • 2.Qe5#
      • 1...Sa2
        • 2.Qd3#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sd5
        • 2.Qd3#
      • 1...Sa6
        • 2.Qd3#
      • 1...Sc6
        • 2.Qd3#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Sf2+!
    • 1.Kg2?
      • 1...Sxf6
        • 2.Qe5#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa2
        • 2.Qd3#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sd5
        • 2.Qd3#
      • 1...Sa6
        • 2.Qd3#
      • 1...Sc6
        • 2.Qd3#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Se3+!
    • 1.Qf3?
      • threat
        • 2.Sb3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se3!
    • 1.Qxg4+?
      • 1...Ke3
        • 2.Sc4#
      • 1...Kc3!
  • Keys
    • 1.Qe1!
      • 1...Sxf6
        • 2.Qe5#
      • 1...Sa2
        • 2.Qd2#
      • 1...Sc2
        • 2.Qd2#
      • 1...Sd3
        • 2.Sb3#
      • 1...Sd5
        • 2.Qd2#
      • 1...Sa6
        • 2.Qd2#
      • 1...Sc6
        • 2.Qd2#
      • 1...Sf2
        • 2.Qe5#
      • 1...Sh2
        • 2.Qe5#
      • 1...Se3
        • 2.Qa1#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qe5#

This anticipates 16843(1943), 18147(1953), 108913(1970), 88777(1993), 16255(2000)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(B)
    • S(a);N_GUARD::QAR1(B),XS(a)
    • S(c);N_GUARD::QAB1(B)
    • S(c);N_GUARD::QAB1(B),XS(c)
    • S(c);N_GUARD,XP(F)::QAB1(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(c);N_GUARD,XP(F)::QAB1(B)
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(c);N_GUARD::QAB1(B)
        • S(a);N_GUARD::QAR1(B)
        • S(c);N_GUARD::QAB1(B),XS(c)
      • Refutation
        • S(c);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(c);N_GUARD,XP(F)::QAB1(B)
        • S(a);N_GUARD::QAR1(B),XS(a)
        • S(a);N_GUARD::QAR1(B)
        • S(c);N_GUARD::QAB1(B)
        • S(c);N_GUARD::QAB1(B),XS(c)
      • Refutation
        • S(c);CHECK
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Vars
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • S(c);
    • Try
      • Q(B);CHECK,XS(c)
      • Vars
        • K(b);S_FLIGHT::S(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • S(c);N_GUARD,XP(F)::QAB1(B)
      • S(a);N_GUARD::QAR2(B)
      • S(a);SBLOCK::S(C)
      • S(c);N_GUARD::QAB1(B)
      • S(c);SBLOCK::QAB(B)
      • S(c);N_GUARD::QAB1(B),XS(c)
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