MESON Chess Problem Database

Problem Display
PID: 179092 (7q/pN2R1pQ/K1k4r/b2p1Bp1/2p5/N1p1p1rb/7B/8 w - - 0 1)

Ellerman, Arnoldo

Magasinet, 1946

7q/pN2R1pQ/K1k4r/b2p1Bp1/2p5/N1p1p1rb/7B/8

#2

7 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Bd7#
    • 1...Rh4
      • 2.Qg6#
    • 1...Rh5
      • 2.Qg6#
    • 1...Rg6
      • 2.Qxg6#
    • 1...d4
      • 2.Be4#
    • 1...g6
      • 2.Re6#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sd4#
        • 2.Sxa7#
      • 1...d4
        • 2.Be4#
      • 1...Qa8
        • 2.Sd4#
      • 1...Qb8
        • 2.Sd4#
      • 1...Rg4
        • 2.Sxa7#
        • 2.Bd7#
      • 1...Rh4
        • 2.Sxa7#
        • 2.Qg6#
      • 1...g6
        • 2.Sxa7#
        • 2.Re6#
      • 1...Bb6!
    • 1.Bc2?
      • threat
        • 2.Ba4#
      • 1...d4
        • 2.Be4#
        • 2.Qe4#
      • 1...Bd7!
  • Keys
    • 1.Sc2!
      • threat
        • 2.Sd4#
      • 1...d4
        • 2.Be4#
      • 1...Rg4
        • 2.Bd7#
      • 1...Rh4
        • 2.Qg6#
      • 1...Bb6
        • 2.Sb4#
      • 1...g6
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • R(c);S_CUTB(d)::B(C)
    • R(j);N_GUARD::QAR(G)
    • R(j);N_GUARD::QAR(G),XR(j)
    • P(g);OGATEB::B(C)
    • P(l);S_CUTR(j)::R(F)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);OGATEB::B(C)
        • Q(m);::S(B)
      • Refutation
        • B(f);
    • Try
      • B(C);
      • Threat
        • B(C)
      • Refutation
        • B(d);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • P(g);OGATEB::B(C)
      • R(c);S_CUTB(d)::B(C)
      • R(j);N_GUARD::QAR(G)
      • B(f);N_GUARD::S(B)
      • P(l);S_CUTR(j)::R(F)
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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).