MESON Chess Problem Database

Problem Display
PID: 257001 (8/8/2Rp1p1b/r3kB2/1NRpn1K1/3pP1pQ/5p2/q2r4 w - - 0 1)

Garofalo, Antonio

Sardella, Giuseppe

Problemas, 2022

8/8/2Rp1p1b/r3kB2/1NRpn1K1/3pP1pQ/5p2/q2r4

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.exd4#
    • 1...Qc1
      • 2.exd4#
    • 1...Qa2
      • 2.exd4#
    • 1...Qa3
      • 2.exd4#
    • 1...Qa4
      • 2.exd4#
    • 1...Bf4
      • 2.exf4#
    • 1...Sc3
      • 2.exd4#
    • 1...Sg5
      • 2.Qxg3#
    • 1...dxe3
      • 2.Rxe4#
    • 1...d5
      • 2.Re6#
  • Tries
    • 1.Qxg3+?
      • 1...Bf4
        • 2.Qxf4#
        • 2.exf4#
      • 1...Sxg3!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qxe4#
      • 1...Sd2
        • 2.Sxd3#
      • 1...Sc3
        • 2.exd4#
      • 1...Sc5
        • 2.Qd5#
      • 1...Sg5
        • 2.Qxg3#
      • 1...d5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::P(A),XP(f)
    • B(l);OGATE::P(A),XB(l)
    • S(g);S_CUTQ(a)::P(A),XP(f)
    • S(g);N_GUARD,S_CUTB(l)::QAB(B),XP(e)
    • P(f);OGATE,XP(A)::R1(D),XS(g)
    • P(j);OGATE::R1(G)
  • Tries
    • Try
      • Q(B);CHECK,XP(e)
      • Refutation
        • S(g);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B),XS(g)
    • Vars
      • S(g);S_CUTR(b)::S(C),XP(d)
      • S(g);S_CUTQ(a)::P(A),XP(f)
      • S(g);OGATE::QAR1(B)
      • S(g);N_GUARD,S_CUTB(l)::QAB(B),XP(e)
      • P(j);OGATE::R1(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).