MESON Chess Problem Database

Problem Display
PID: 181799 (B1Qb2b1/8/2qp2p1/8/3PkN2/1P2P3/2P3K1/5N2 w - - 0 1)

Kuijers, LA

1st HM., Western Daily Mercury, 1905

B1Qb2b1/8/2qp2p1/8/3PkN2/1P2P3/2P3K1/5N2

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qxe6#
    • 1...Bh7
      • 2.Qe6#
  • Tries
    • 1.Kf2?
      • threat
        • 2.Sd2#
        • 2.Sg3#
      • 1...Be6
        • 2.Sg3#
        • 2.Qxe6#
      • 1...Ba5
        • 2.Sg3#
      • 1...Bh4+!
    • 1.Se2?
      • threat
        • 2.Sc3#
      • 1...Kd5
        • 2.Sc3#
        • 2.Bxc6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bd5
        • 2.Seg3#
        • 2.Qg4#
      • 1...d5
        • 2.Seg3#
        • 2.Qg4#
      • 1...Ba5!
    • 1.Bxc6+?
      • 1...Bd5
        • 2.Bxd5#
        • 2.Qe6#
      • 1...d5!
    • 1.Qxc6+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...d5
        • 2.Qxg6#
      • 1...Kf5!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc3#
      • 1...Qxc2+
        • 2.Qxc2#
      • 1...Kxd5
        • 2.Bxc6#
      • 1...Qxd5
        • 2.Qg4#
      • 1...Qxc8
        • 2.Sg3#
      • 1...Bxd5
        • 2.Qg4#
      • 1...Be6
        • 2.Qxe6#
      • 1...Qd7
        • 2.Sg3#
      • 1...Qc3
        • 2.Sg3#
        • 2.Sxc3#
        • 2.Sf6#
        • 2.Qg4#
      • 1...Ba5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::QAR2(I),XB(f)
    • B(f);N_GUARD::QAR2(I)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::S(A)
      • Refutation
        • B(e);CHECK
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • B(f);N_GUARD::QAR2(I),XB(f)
      • Refutation
        • B(e);
    • Try
      • B(H);CHECK,XQ(b)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(I);CHECK,XQ(b)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(I),XB(f)
        • P(c);OGATE,P_SPINP(c)::QAB(I),XP(d)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(G);N_PINQ(b)
    • Threat
      • S(G)
    • Vars
      • Q(b);CHECK,OGATE,XP(B)::QAB(I),XQ(b)
      • K(a);OGATEB,P_SPINQ(b),S_FLIGHT,XS(G)::B(H),XQ(b)
      • Q(b);P_SPINQ(b),XS(G)::QAR2(I)
      • Q(b);XQ(I)::S(A)
      • B(f);SBLOCK,XS(G)::QAR2(I)
      • B(f);N_GUARD::QAR2(I),XB(f)
      • Q(b);::S(A)
      • B(e);N_GUARD::S(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).