MESON Chess Problem Database

Problem Display
PID: 244734 (6B1/4p2Q/3pPq2/1P1k2n1/3P2K1/1PbRRp2/nNP1N3/8 w - - 0 1)

Colaneri, Bruno

Problemas, 2020

6B1/4p2Q/3pPq2/1P1k2n1/3P2K1/1PbRRp2/nNP1N3/8

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qg7
      • 2.Sf4#
    • 1...Qh8
      • 2.Sf4#
    • 1...Qf4+
      • 2.Sxf4#
    • 1...Qf5+
      • 2.Qxf5#
    • 1...Qxe6+
      • 2.Qf5#
    • 1...Qg6
      • 2.Sf4#
    • 1...Qh6
      • 2.Sf4#
      • 2.Qf5#
    • 1...Be1
      • 2.c4#
    • 1...Bxb2
      • 2.c4#
    • 1...Bd2
      • 2.c4#
    • 1...Bb4
      • 2.c4#
    • 1...Ba5
      • 2.c4#
    • 1...Sc1
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sxc3#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sxe6
      • 2.Qe4#
    • 1...Sf7
      • 2.Qe4#
  • Tries
    • 1.Qf5+?
      • 1...Qe5
        • 2.Sf4#
      • 1...Qxf5+!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sb6#
      • 1...Qxd4+
        • 2.Sf4#
      • 1...Qf4+
        • 2.Sxf4#
      • 1...Qf5+
        • 2.Qxf5#
      • 1...Qxe6+
        • 2.Qf5#
      • 1...Bxd4
        • 2.c4#
      • 1...Ba5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(g);N_GUARD::S(C)
    • Q(g);CHECK,N_GUARD::S(C),XQ(g)
    • Q(g);CHECK,N_GUARD::QAR2(K),XQ(g)
    • Q(g);CHECK,N_GUARD,P_SPINQ(g),XP(J)::QAR2(K)
    • B(b);OGATE::P(B)
    • B(b);OGATE,XS(A)::P(B)
    • S(a);N_GUARD::S(C),XB(b)
    • S(e);N_GUARD::QAB1(K)
    • S(e);N_GUARD::QAB1(K),XS(e)
    • S(e);N_GUARD,P_SPINS(e),XP(J)::QAB1(K)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • Q(g);P_SPINQ(g)::S(C)
      • Refutation
        • Q(g);CHECK,XQ(K)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • Q(g);CHECK,N_GUARD,P_SPINQ(g),XP(G)::S(C)
      • Q(g);CHECK,N_GUARD::S(C),XQ(g)
      • Q(g);CHECK,N_GUARD::QAR2(K),XQ(g)
      • Q(g);CHECK,N_GUARD,P_SPINQ(g),XP(J)::QAR2(K)
      • B(b);OGATE,P_SPINB(b),XP(G)::P(B)
      • B(b);OGATE::P(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).