MESON Chess Problem Database

Problem Display
PID: 273169 (4Rn2/2p1q3/2QNn2B/4k1PR/r2b1p2/p5r1/K3PN2/8 w - - 0 1)

Ceder, Sven Ture

Schackvarlden, 1937

4Rn2/2p1q3/2QNn2B/4k1PR/r2b1p2/p5r1/K3PN2/8

#2

9 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg5
      • 2.Bg7#
    • 1...Qxd6
      • 2.Qe4#
    • 1...Qg7
      • 2.Bxg7#
    • 1...Rg1
      • 2.Sd3#
    • 1...Rg2
      • 2.Sd3#
    • 1...Rb3
      • 2.Sg4#
    • 1...Rc3
      • 2.Sg4#
    • 1...Rd3
      • 2.Sxd3#
      • 2.Sg4#
    • 1...Re3
      • 2.Sg4#
    • 1...Rf3
      • 2.Sg4#
    • 1...Rh3
      • 2.Sg4#
    • 1...Rg4
      • 2.Sd3#
      • 2.Sxg4#
    • 1...Rxg5
      • 2.Sg4#
    • 1...f3
      • 2.Sd3#
    • 1...cxd6
      • 2.Qe4#
  • Tries
    • 1.Sc4+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Rxc4!
    • 1.Sf7+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Qxf7!
  • Keys
    • 1.e4!
      • threat
        • 2.Qd5#
      • 1...Qxg5
        • 2.Bg7#
      • 1...Qxd6
        • 2.Bg7#
      • 1...Rxg5
        • 2.Sg4#
      • 1...Sxg5
        • 2.Sf7#
      • 1...fxe4 ep
        • 2.Sd3#
      • 1...f3
        • 2.Sd3#
      • 1...Ra5
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD,P_SPINQ(i),P_SPINS(g),XP(D)::B(H)
    • Q(i);P_SPINS(g),SBLOCK,XS(G)::QAR1(F)
    • Q(i);N_GUARD,P_SPINS(g)::B(H),XQ(i)
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD,P_SPINR(b),XP(D)::S(C)
    • P(e);S_CUTR(b)::S(C)
    • P(h);SBLOCK,XS(G)::QAR1(F)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB1(F)
      • Refutation
        • R(c);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(f);P-FLIGHT::QAB1(F)
      • Refutation
        • Q(i);P_SPINS(g),XS(G)
  • Actual
    • P(B);
    • Threat
      • QAR1(F)
    • Vars
      • Q(i);N_GUARD,P_SPINQ(i),P_SPINS(g),XP(D)::B(H)
      • Q(i);N_GUARD,P_SPINS(g),XS(G)::B(H)
      • R(b);N_GUARD,P_SPINR(b),XP(D)::S(C)
      • S(g);P_SPINQ(i),P_SPINS(g),XP(D)::S(G)
      • P(e);EP,S_CUTR(b),XP(B)::S(C)
      • P(e);S_CUTR(b)::S(C)
      • R(c);N_GUARD::S(G)
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).