MESON Chess Problem Database

Problem Display
PID: 193807 (8/1K2B1p1/4p2p/pRN3Qr/1n1k2P1/qP1BN1Pb/3PR1n1/4r3 w - - 0 1)

Henriksen, Thorleif Cammillo

Good Companions, 1916

8/1K2B1p1/4p2p/pRN3Qr/1n1k2P1/qP1BN1Pb/3PR1n1/4r3

#2

12 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qf4#
    • 1...Sa2
      • 2.Sc2#
    • 1...Sc2
      • 2.Sxc2#
    • 1...Sxd3
      • 2.Sc2#
    • 1...Sd5
      • 2.Sc2#
    • 1...Sa6
      • 2.Sc2#
    • 1...Sc6
      • 2.Sc2#
  • Tries
    • 1.Sf5+?
      • 1...Kd5
        • 2.Sa4#
        • 2.Se4#
        • 2.Sa6#
        • 2.Sxe6#
        • 2.Sd7#
        • 2.Bc4#
      • 1...exf5!
    • 1.Bg6?
      • threat
        • 2.Sxe6#
      • 1...Qxb3
        • 2.Sxb3#
      • 1...Sf4
        • 2.Qxf4#
      • 1...e5
        • 2.Se6#
      • 1...Bxg4!
    • 1.Bf6+?
      • 1...e5
        • 2.Bxe5#
      • 1...gxf6!
    • 1.Rxb4+?
      • 1...axb4
        • 2.Sc2#
      • 1...Qxb4+!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Sxe6#
      • 1...Ke5
        • 2.Qxg7#
      • 1...Qxb3
        • 2.Sxb3#
      • 1...exf5
        • 2.Qxg7#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sd5
        • 2.Sc2#
      • 1...e5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • S(b);N_GUARD::QAR2(J),XS(b)
    • S(b);N_GUARD::QAR2(J)
    • S(e);N_GUARD::S(E)
    • S(e);N_GUARD::S(E),XS(e)
    • S(e);N_GUARD,XB(D)::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • P(i);XS(E)
    • Try
      • B(D);
      • Threat
        • S(I),XP(i)
      • Vars
        • Q(c);XP(C)::S(I),XQ(c)
        • S(b);N_GUARD::QAR2(J),XS(b)
        • P(i);::S(I)
      • Refutation
        • B(d);XP(G)
    • Try
      • B(L);CHECK
      • Vars
        • P(i);P_SPINP(i)::B(L),XP(i)
      • Refutation
        • P(k);XB(L)
    • Try
      • R(H);CHECK,XS(e)
      • Vars
        • P(g);XR(H)::S(E)
      • Refutation
        • Q(c);CHECK,XR(H)
  • Actual
    • B(D);
    • Threat
      • S(I),XP(i)
    • Vars
      • K(f);S_FLIGHT::QAB(J),XP(k)
      • Q(c);XP(C)::S(I),XQ(c)
      • P(i);N_GUARD,XB(D)::QAB(J),XP(k)
      • S(b);N_GUARD::QAR2(J),XS(b)
      • S(e);N_GUARD,SBLOCK::S(E)
      • P(i);::S(I)
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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).