MESON Chess Problem Database

Problem Display
PID: 158063 (3nB3/8/3p4/N1pk4/5QP1/5K2/5n2/8 w - - 0 1)

Meyer, Max Julius

Boys' Own Paper, 1894

(First published on Sat Jun 16 1894)

3nB3/8/3p4/N1pk4/5QP1/5K2/5n2/8

#2

5 + 5

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sd3
      • 2.Qe4#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sxg4
      • 2.Qe4#
    • 1...Sc6
      • 2.Bf7#
    • 1...Se6
      • 2.Bc6#
    • 1...Sb7
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
  • Tries
    • 1.Qe3?
      • 1...Sxg4
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se6
        • 2.Bc6#
      • 1...Sd1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sh3
        • 2.Qe4#
      • 1...Sc6
        • 2.Bxc6#
        • 2.Bf7#
      • 1...Sb7
        • 2.Bc6#
        • 2.Bf7#
      • 1...Sf7
        • 2.Bc6#
        • 2.Bxf7#
      • 1...c4!
  • Keys
    • 1.Sc6!
      • 1...Ke6
        • 2.Qf5#
      • 1...Sxg4
        • 2.Qe4#
      • 1...Sxc6
        • 2.Bf7#
      • 1...Se4
        • 2.Qxe4#
      • 1...c4
        • 2.Qf5#
      • 1...Sd1
        • 2.Qe4#
      • 1...Sh1
        • 2.Qe4#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sh3
        • 2.Qe4#
      • 1...Se6
        • 2.Se7#
      • 1...Sb7
        • 2.Qf7#
      • 1...Sf7
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(a);N_GUARD,XP(C)::QAB1(B)
    • S(e);N_GUARD::B(E)
    • S(e);N_GUARD,SBLOCK::B(E)
    • S(e);N_GUARD::B(E),XS(e)
  • Tries
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD,XP(C)::QAB1(B)
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(e);N_GUARD::B(E)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(b);
  • Actual
    • S(D);
    • Vars
      • K(c);S_FLIGHT::QAB1(B)
      • S(a);N_GUARD,XP(C)::QAB1(B)
      • S(e);N_GUARD,SBLOCK,XS(D)::B(E)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • P(b);SBLOCK::QAR2(B)
      • S(a);N_GUARD::QAB1(B)
      • S(e);SBLOCK::S(D)
      • S(e);N_GUARD::QAB(B)
      • S(e);N_GUARD::QAB(B),XS(e)
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