MESON Chess Problem Database

Problem Display
PID: 168214 (8/r1p1K3/N1p2p2/2nk4/1P4R1/1p2p1Q1/5p1B/3Nq2b w - - 0 1)

Petite, Efren

L'Italia Scacchistica, 2000

8/r1p1K3/N1p2p2/2nk4/1P4R1/1p2p1Q1/5p1B/3Nq2b

#2

7 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qxb4
      • 2.Sxe3#
      • 2.Sxb4#
    • 1...Qf1
      • 2.Sc3#
      • 2.Sxe3#
    • 1...Qg1
      • 2.Sc3#
      • 2.Sxe3#
    • 1...Qe2
      • 2.Sc3#
    • 1...Ra8
      • 2.Sxc7#
    • 1...Sb7
      • 2.Sxc7#
    • 1...e2
      • 2.Se3#
    • 1...f5
      • 2.Qe5#
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Rd4#
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...Qxd1
        • 2.Qxc5#
      • 1...Be4
        • 2.Qxc5#
      • 1...Se4
        • 2.Qd3#
      • 1...Qd2
        • 2.Qxc5#
      • 1...Qc3
        • 2.Sxc3#
      • 1...Se6
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::S(A),XQ(a)
    • Q(a);N_GUARD::S(A)
    • R(j);N_GUARD::S(F),XP(k)
    • S(f);S_CUTR(j)::S(F),XP(k)
    • P(e);S_CUTQ(a)::S(A)
    • P(i);N_GUARD::QAR1(C)
  • Actual
    • Q(C);P_SPINQ(C),XP(e)
    • Threat
      • R1(E)
    • Vars
      • Q(a);CHECK,XQ(C)::S(A),XQ(a)
      • Q(a);N_PINQ(C),XP(D)::S(F),XQ(a)
      • Q(a);N_PINQ(C),XS(A)::QAR1(C),XS(f)
      • B(b);N_PINQ(C)::QAR1(C),XS(f)
      • S(f);N_PINQ(C)::QAR2(C)
      • Q(a);N_PINQ(C)::QAR1(C),XS(f)
      • Q(a);N_GUARD,N_PINQ(C)::S(A),XQ(a)
      • S(f);N_PINQ(C)::QAB(C),XP(d)
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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).