MESON Chess Problem Database

Problem Display
PID: 712 (1n3QBB/1R2R2K/2ppP1N1/2Pk2Np/P7/1P4n1/2r2b2/1b1q1r2 w - - 0 1)

Storm, Fredrik

British Chess Magazine, 1940

1n3QBB/1R2R2K/2ppP1N1/2Pk2Np/P7/1P4n1/2r2b2/1b1q1r2

#2

12 + 11

887 Mate in Two Moves 1931

SOLUTION

  • SOUND
  • Sets
    • 1...Sh1
      • 2.Qf5#
    • 1...Se2
      • 2.Qf5#
    • 1...Se4
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
  • Tries
    • 1.Red7?
      • threat
        • 2.Qxd6#
      • 1...Bxc5
        • 2.Se7#
      • 1...Se4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxc5!
    • 1.Re8?
      • threat
        • 2.Qxd6#
      • 1...Rxc5
        • 2.e7#
      • 1...Bxc5
        • 2.Se7#
      • 1...dxc5
        • 2.Sf4#
      • 1...Se4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxc5!
  • Keys
    • 1.Rec7!
      • threat
        • 2.Qxd6#
      • 1...Kxc5
        • 2.Rb5#
      • 1...Rxc5
        • 2.e7#
      • 1...Bxc5
        • 2.Se7#
      • 1...dxc5
        • 2.Sf4#
      • 1...Se4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(f);N_GUARD::QAR2(J)
    • S(f);N_GUARD::QAR2(J),XS(f)
  • Tries
    • Try
      • R(H);P_PINP(j)
      • Threat
        • QAR1(J),XP(j)
      • Vars
        • B(e);SBLOCK,XP(C)::S(F)
        • S(f);N_GUARD::QAR2(J)
        • S(f);N_GUARD::QAR2(J),XS(f)
      • Refutation
        • K(g);P-FLIGHT,XP(C)
    • Try
      • R(H);
      • Threat
        • QAR1(J),XP(j)
      • Vars
        • R(d);P_PINS(F),SBLOCK,XP(C)::B(K)+P(E)
        • B(e);SBLOCK,XP(C)::S(F)
        • P(j);XP(C)::S(F)
        • S(f);N_GUARD::QAR2(J)
        • S(f);N_GUARD::QAR2(J),XS(f)
      • Refutation
        • K(g);P-FLIGHT,P_SPINP(j),XP(C)
  • Actual
    • R(H);
    • Threat
      • QAR1(J),XP(j)
    • Vars
      • K(g);OGATEB,P-FLIGHT,P_SPINP(i),XP(C)::R1(G)
      • R(d);P_PINS(F),SBLOCK,XP(C)::B(K)+P(E)
      • B(e);SBLOCK,XP(C)::S(F)
      • P(j);XP(C)::S(F)
      • S(f);N_GUARD::QAR2(J)
      • S(f);N_GUARD::QAR2(J),XS(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).