MESON Chess Problem Database

Problem Display
PID: 121493 (2B1nr2/5p1Q/pB6/3kN1p1/1RN4n/r3p3/p3P3/K7 w - - 0 1)

Henriksen, Thorleif Cammillo

Nordisk Schachblad, 1911

2B1nr2/5p1Q/pB6/3kN1p1/1RN4n/r3p3/p3P3/K7

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxd3#
    • 1...Ra4
      • 2.Qd3#
    • 1...Ra5
      • 2.Qd3#
    • 1...Sf5
      • 2.Qh1#
    • 1...Sg6
      • 2.Qh1#
    • 1...a5
      • 2.Rb5#
    • 1...f5
      • 2.Qb7#
    • 1...f6
      • 2.Qb7#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Qe4#
      • 1...Sf5
        • 2.Qh1#
      • 1...Sg6
        • 2.Qh1#
      • 1...f5!
    • 1.Be6+?
      • 1...fxe6
        • 2.Qb7#
      • 1...Kxe6!
    • 1.Qxh4?
      • threat
        • 2.Qh1#
        • 2.Qd4#
      • 1...g4
        • 2.Qh1#
      • 1...Rd3
        • 2.Qh1#
      • 1...Rh8
        • 2.Qd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sf6
        • 2.Qd4#
      • 1...gxh4!
    • 1.Qxf7+?
      • 1...Ke4
        • 2.Bb7#
      • 1...Rxf7!
  • Keys
    • 1.Sg6!
      • threat
        • 2.Se7#
      • 1...Ke4
        • 2.Sxe3#
      • 1...Kc6
        • 2.Se7#
      • 1...Sxg6
        • 2.Qh1#
      • 1...fxg6
        • 2.Qb7#
      • 1...Sf5
        • 2.Qh1#
      • 1...f5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::QAR2(G),XR(b)
    • R(b);N_GUARD::QAR2(G)
    • S(d);OGATE::QAB(G)
    • P(g);N_GUARD::R(C)
    • P(h);OGATE::QAB(G)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • K(e);S_FLIGHT,XS(E)::QAB(G)
        • S(d);OGATE::QAB(G)
      • Refutation
        • P(h);
    • Try
      • B(H);CHECK
      • Vars
        • P(h);OGATE,SBLOCK,XB(H)::QAB(G)
      • Refutation
        • K(e);S_FLIGHT,XB(H)
    • Try
      • Q(G);XS(d)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::QAB(G)
        • R(b);::QAB(G)
        • R(j);::QAR1(G)
        • S(i);::QAR1(G)
      • Refutation
        • P(f);XQ(G)
    • Try
      • Q(G);CHECK,XP(h)
      • Vars
        • K(e);S_FLIGHT::B(H)
      • Refutation
        • R(j);XQ(G)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • K(e);S_FLIGHT::R(C)+S(D),XP(c)
      • K(e);S_FLIGHT::S(E)
      • S(d);OGATE,XS(E)::QAB(G)
      • P(h);OGATE,XS(E)::QAB(G)
      • S(d);OGATE::QAB(G)
      • P(h);OGATE::QAB(G)
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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).