MESON Chess Problem Database

Problem Display
PID: 179050 (6N1/qQn5/3p1pK1/1p1r2p1/3bk3/4pN1R/7B/3R4 w - - 0 1)

Wirtanen, Erkki Aukusti

Magasinet, 1938

6N1/qQn5/3p1pK1/1p1r2p1/3bk3/4pN1R/7B/3R4

#2

7 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Rxd4#
    • 1...Qa2
      • 2.Rxd4#
    • 1...Qa3
      • 2.Rxd4#
    • 1...Qa5
      • 2.Rxd4#
    • 1...Qa6
      • 2.Rxd4#
    • 1...Qa8
      • 2.Rxd4#
    • 1...Bc5
      • 2.Sxf6#
    • 1...Bb6
      • 2.Sxf6#
    • 1...e2
      • 2.Sd2#
    • 1...f5
      • 2.Sxg5#
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qg4#
      • 1...Rc5
        • 2.Rxd4#
      • 1...Re5
        • 2.Sxf6#
      • 1...Rf5
        • 2.Qxf5#
      • 1...e2
        • 2.Sd2#
      • 1...Be5
        • 2.Qf5#
      • 1...Se6
        • 2.Qc2#
      • 1...g4
        • 2.Qxg4#
      • 1...f5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(i);N_GUARD::R1(A),XB(b)
    • B(b);N_GUARD::S(G),XP(h)
    • P(a);N_GUARD::S(C)
    • P(h);N_GUARD::S(C),XP(f)
  • Actual
    • Q(F);N_PINR(e)
    • Threat
      • QAR2(F)
    • Vars
      • R(e);N_GUARD,S_CUTQ(i)::R1(A),XB(b)
      • R(e);S_CUTB(b)::S(G),XP(h)
      • R(e);N_GUARD::QAB1(F),XR(e)
      • P(a);N_GUARD::S(C)
      • B(b);S_CUTR(e)::QAB1(F)
      • S(j);OGATE::QAB(F)
      • P(f);::QAR2(F),XP(f)
      • P(h);N_GUARD,S_CUTR(e)::S(C),XP(f)
HTML5 logo

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).