MESON Chess Problem Database

Problem Display
PID: 99172 (B2K2b1/8/8/1Qpn4/1p1k2N1/7r/3P4/2B1N3 w - - 0 1)

Hermanson, Halvar

Magyar Sakkelet, 1954

B2K2b1/8/8/1Qpn4/1p1k2N1/7r/3P4/2B1N3

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qd3#
    • 1...Rh2
      • 2.Qd3#
    • 1...Rd3
      • 2.Qxd3#
    • 1...Rh4
      • 2.Qd3#
    • 1...Rh5
      • 2.Qd3#
    • 1...Rh6
      • 2.Qd3#
    • 1...Rh7
      • 2.Qd3#
    • 1...Rh8
      • 2.Qd3#
    • 1...Sc3
      • 2.Sc2#
    • 1...Se3
      • 2.Bb2#
      • 2.Qd3#
    • 1...Sf4
      • 2.Sc2#
    • 1...Sb6
      • 2.Sc2#
    • 1...Sf6
      • 2.Sc2#
    • 1...Sc7
      • 2.Sc2#
    • 1...Se7
      • 2.Sc2#
  • Tries
    • 1.Bb2+?
      • 1...Rc3
        • 2.Qd3#
      • 1...Sc3
        • 2.Sc2#
      • 1...Ke4!
  • Keys
    • 1.d3!
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Qc4#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Sc2#
      • 1...Se3
        • 2.Bb2#
      • 1...Sf4
        • 2.Bb2#
      • 1...Sb6
        • 2.Bb2#
      • 1...Sf6
        • 2.Bb2#
      • 1...Sc7
        • 2.Bb2#
      • 1...Se7
        • 2.Bb2#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::QAR1(E)
    • R(a);N_GUARD::QAR1(E),XR(a)
    • S(e);::S(B)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • R(a);P_SPINR(a)::QAR1(E)
        • S(e);P_SPINS(e)::S(B)
      • Refutation
        • K(c);P-FLIGHT,P_SPINS(e)
  • Actual
    • P(C);
    • Threat
      • QAR1(E)
    • Vars
      • K(c);S_FLIGHT::QAR1(E)
      • R(a);OGATE,XP(C)::QAR1(E),XR(a)
      • S(e);SBLOCK::S(B)
      • S(e);N_GUARD::B(A)
      • P(d);::QAR1(E),XP(d)
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).