MESON Chess Problem Database

Problem Display
PID: 276483 (4Nn2/8/2p5/2PpkBp1/1n3NPp/4BQ1P/3p1pp1/3Kbrrb w - - 0 1)

Boswell, Edward

Western Morning News, 1926

(First published on Sat Aug 21 1926)

4Nn2/8/2p5/2PpkBp1/1n3NPp/4BQ1P/3p1pp1/3Kbrrb

#2

9 + 14

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Sd3#
    • 1...Sc2
      • 2.Sd3#
    • 1...Sd3
      • 2.Sxd3#
    • 1...Sa6
      • 2.Sd3#
    • 1...Se6
      • 2.Sg6#
    • 1...Sg6
      • 2.Sxg6#
    • 1...Sd7
      • 2.Sg6#
    • 1...Sh7
      • 2.Sg6#
    • 1...d4
      • 2.Qe4#
    • 1...gxf4
      • 2.Qxf4#
  • Tries
    • 1.Bxf2?
      • threat
        • 2.Qe3#
      • 1...gxf4
        • 2.Qe2#
      • 1...Sc2
        • 2.Sd3#
      • 1...d4
        • 2.Qe4#
      • 1...Bxf2+!
    • 1.Qxd5+?
      • 1...Sxd5
        • 2.Sd3#
      • 1...cxd5!
  • Keys
    • 1.Qe2!
      • 1...gxf4
        • 2.Bxf2#
      • 1...Sc2
        • 2.Sd3#
      • 1...Sa2
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sa6
        • 2.Sd3#
      • 1...Se6
        • 2.Sg6#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sd7
        • 2.Sg6#
      • 1...Sh7
        • 2.Sg6#
      • 1...d4
        • 2.Bxd2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(h);N_GUARD::S(E)
    • S(h);N_GUARD::S(E),XS(h)
    • S(n);N_GUARD::S(E)
    • S(n);N_GUARD::S(E),XS(n)
    • P(j);N_GUARD::QAR1(C)
    • P(l);OGATE,XS(E)::QAB1(C),XP(l)
  • Tries
    • Try
      • B(B);XP(f)
      • Threat
        • QAR2(C)
      • Vars
        • P(l);SBLOCK,XS(E)::QAR(C)
        • S(h);N_GUARD::S(E)
        • P(j);N_GUARD::QAR1(C)
      • Refutation
        • B(a);CHECK,XB(B)
    • Try
      • Q(C);CHECK,XP(j)
      • Vars
        • S(h);SBLOCK,XQ(C)::S(E)
      • Refutation
        • P(m);XQ(C)
  • Actual
    • Q(C);
    • Vars
      • P(l);SBLOCK,XS(E)::QAR(C)+B(B),XP(f)
      • S(h);N_GUARD::S(E)
      • S(h);N_GUARD::S(E),XS(h)
      • S(n);N_GUARD::S(E)
      • S(n);N_GUARD::S(E),XS(n)
      • P(j);SBLOCK::QAR(C)+B(B),XP(e)
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