MESON Chess Problem Database

Problem Display
PID: 22011 (K1b4Q/1pr1P1R1/3B4/Ppn3p1/N1Bnk3/2b1r3/q5P1/3R3N w - - 0 1)

Malmstrom, Birger Georg Christens

Good Companions, 1923

K1b4Q/1pr1P1R1/3B4/Ppn3p1/N1Bnk3/2b1r3/q5P1/3R3N

#2

11 + 11

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Sg3#
    • 1...Sde6
      • 2.Qh7#
  • Tries
    • 1.Sf2+?
      • 1...Kf5
        • 2.Qf8#
      • 1...Qxf2!
  • Keys
    • 1.Rxg5!
      • threat
        • 2.Qe5#
      • 1...Qxg2
        • 2.Bd5#
      • 1...Rxe7
        • 2.Sxc5#
      • 1...Sc2
        • 2.Sf2#
      • 1...Se2
        • 2.Sf2#
      • 1...Sdb3
        • 2.Bd5#
      • 1...Sf3
        • 2.Sg3#
      • 1...Sf5
        • 2.Rg4#
      • 1...Sc6
        • 2.Sxc5#
      • 1...Sde6
        • 2.Qh7#
      • 1...Sd3
        • 2.Sxc3#
      • 1...Sd7
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(d);S_CUTR(c)::S(B)
    • S(d);N_GUARD,S_CUTB(k)::QAB(K)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR(K)
      • Refutation
        • Q(a);XS(B)
  • Actual
    • R(I);XP(h)
    • Threat
      • QAR1(K)
    • Vars
      • Q(a);N_GUARD,XP(C)::B(E)
      • R(j);N_GUARD,XP(H)::S(D),XS(g)
      • S(d);S_CUTQ(a)::S(B)
      • S(d);S_CUTQ(a)::B(E)
      • S(d);S_CUTR(c)::S(B)
      • S(d);SBLOCK,S_CUTB(k)::R(I)
      • S(d);S_CUTR(j)::S(D),XS(g)
      • S(d);N_GUARD,S_CUTB(k)::QAB(K)
      • S(g);S_CUTR(c)::S(D),XB(b)
      • S(g);S_CUTB(k)::QAR(K)
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).