MESON Chess Problem Database

Problem Display
PID: 238074 (2R5/n3p3/Q3P3/1b1kBp2/2N2n2/2P5/7b/1B2RK2 w - - 0 1)

Hermanson, Halvar

Skakbladet, 1949

2R5/n3p3/Q3P3/1b1kBp2/2N2n2/2P5/7b/1B2RK2

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc4+
      • 2.Qxc4#
    • 1...Sg2
      • 2.Rd1#
    • 1...Sh3
      • 2.Rd1#
    • 1...Sh5
      • 2.Rd1#
    • 1...Sg6
      • 2.Rd1#
  • Tries
    • 1.Bxf4?
      • threat
        • 2.Rd1#
        • 2.Re5#
      • 1...Bxc4+
        • 2.Qxc4#
      • 1...Bxa6
        • 2.Re5#
      • 1...Sxc8
        • 2.Qxb5#
      • 1...Bc6
        • 2.Re5#
      • 1...Sc6
        • 2.Qxb5#
      • 1...Bg1
        • 2.Re5#
      • 1...Ba4
        • 2.Se3#
        • 2.Sb6#
        • 2.Re5#
      • 1...Bxf4!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Re5#
      • 1...Bxc4+
        • 2.Qxc4#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Sxc8
        • 2.Qxb5#
      • 1...Sc6
        • 2.Qxb5#
      • 1...Sd3
        • 2.Sb6#
      • 1...Se2
        • 2.Se3#
      • 1...Sg2
        • 2.Rd1#
      • 1...Sh3
        • 2.Rd1#
      • 1...Sh5
        • 2.Rd1#
      • 1...Sg6
        • 2.Rd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,OGATE,XS(E)::QAB1(G),XB(c)
    • S(b);N_GUARD::R(B)
  • Tries
    • Try
      • B(F);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);CHECK,OGATE,XS(E)::QAB1(G),XB(c)
        • B(c);XQ(G)::R1(B)
        • S(f);N_GUARD,XR(I)::QAR2(G),XB(c)
        • B(c);N_PINS(E)::R1(B)
        • S(f);N_GUARD::QAR2(G),XB(c)
        • B(a);::R1(B)
      • Refutation
        • B(a);XB(F)
  • Actual
    • B(F);
    • Threat
      • R1(B)
    • Vars
      • B(c);CHECK,OGATE,XS(E)::QAB1(G),XB(c)
      • S(b);OGATE,XP(H)::QAB1(G),XS(b)
      • S(f);N_GUARD,XR(I)::QAR2(G),XB(c)
      • S(f);N_GUARD::QAR2(G),XB(c)
      • S(b);N_PINS(E)::S(E)
      • S(b);N_GUARD::R(B)
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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).