MESON Chess Problem Database

Problem Display
PID: 153263 (2B2b1K/5Qpp/7q/3p1N2/P1k1n3/BR3bp1/5r2/1R2N3 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1944

2B2b1K/5Qpp/7q/3p1N2/P1k1n3/BR3bp1/5r2/1R2N3

#2

9 + 10

15256 TRD Scrapbook 2014
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Ba6#
    • 1...Qd2
      • 2.Ba6#
    • 1...Qe3
      • 2.Ba6#
    • 1...Qf4
      • 2.Ba6#
    • 1...Qg5
      • 2.Ba6#
    • 1...Qh1
      • 2.Ba6#
    • 1...Qh2
      • 2.Ba6#
    • 1...Qh3
      • 2.Ba6#
    • 1...Qh4
      • 2.Ba6#
    • 1...Qh5
      • 2.Ba6#
    • 1...Qa6
      • 2.Bxa6#
    • 1...Bd6
      • 2.Ba6#
    • 1...Sd6
      • 2.Qc7#
    • 1...Sf6
      • 2.Ba6#
    • 1...g6
      • 2.Ba6#
  • Tries
    • 1.Se3+?
      • 1...Kd4
        • 2.Qxd5#
      • 1...Qxe3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qxd5#
      • 1...Qc6
        • 2.Se3#
      • 1...Qd6
        • 2.Se3#
      • 1...Qe6
        • 2.Se3#
      • 1...Sd2
        • 2.Rc1#
      • 1...Sc3
        • 2.Rd4#
      • 1...Sc5
        • 2.Rb4#
      • 1...Sg5
        • 2.Se3#
      • 1...Sd6
        • 2.Qc7#
      • 1...Sf6
        • 2.Ba6#

Anticipated by 201367(1922)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 13
  • Sets
    • Q(g);N_GUARD::B(H)
    • Q(g);N_GUARD::B(H),XQ(g)
    • B(j);S_CUTQ(g)::B(H)
    • S(e);N_GUARD,S_CUTB(j),S_CUTQ(g)::QAR(G)
    • S(e);S_CUTQ(g)::B(H)
    • P(h);S_CUTQ(g)::B(H)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINP(f),P-FLIGHT::QAR1(G),XP(f)
      • Refutation
        • Q(g);XS(F)
  • Actual
    • R(D);
    • Threat
      • QAB1(G),XP(f)
    • Vars
      • Q(g);N_GUARD::S(F)
      • Q(g);N_GUARD,N_SPINP(f)::S(F)
      • S(e);N_GUARD,S_CUTQ(g),S_CUTR(a)::R(A)
      • S(e);SBLOCK::R1(D)
      • S(e);SBLOCK,S_CUTB(j)::R1(A)
      • S(e);S_CUTQ(g)::S(F)
      • S(e);N_GUARD,S_CUTB(j),S_CUTQ(g)::QAR(G)
      • S(e);S_CUTQ(g)::B(H)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).