MESON Chess Problem Database

Problem Display
PID: 195077 (7b/1p6/2p1p1p1/RN2k3/2p1N1pp/8/5Qpq/KB6 w - - 0 1)

Guidelli, Giorgio

Pittsburgh Gazette-Times, 1918

7b/1p6/2p1p1p1/RN2k3/2p1N1pp/8/5Qpq/KB6

#2

6 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5+
      • 2.Sbc3#
    • 1...Qf4
      • 2.Qc5#
    • 1...cxb5
      • 2.Rxb5#
  • Tries
    • 1.Sa3+?
      • 1...c5
        • 2.Rxc5#
      • 1...b5!
    • 1.Sbc3+?
      • 1...c5
        • 2.Rxc5#
      • 1...b5!
    • 1.Sd4+?
      • 1...c5
        • 2.Rxc5#
      • 1...b5!
    • 1.Sbd6+?
      • 1...c5
        • 2.Rxc5#
      • 1...b5!
    • 1.Sa7+?
      • 1...c5
        • 2.Rxc5#
      • 1...b5!
    • 1.Sc7+?
      • 1...c5
        • 2.Rxc5#
      • 1...b5!
    • 1.Qf6+?
      • 1...Kd5
        • 2.Sbc3#
        • 2.Sc7#
      • 1...Bxf6!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qg5#
      • 1...Kd5+
        • 2.Sbc3#
      • 1...Kf5+
        • 2.Sd4#
      • 1...cxb5
        • 2.Rxb5#
      • 1...Qf4
        • 2.Qc5#
      • 1...Bf6
        • 2.Sec3#
      • 1...g5
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(f);CHECK,P-FLIGHT::R(E)+S(F),DCHECK
    • Q(b);SBLOCK::QAR2(C)
    • P(g);OGATE,P_SPINP(g),XS(F)::R(E),XP(g)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E),XP(g)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E),XP(g)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E),XP(g)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E),XP(g)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E),XP(g)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • S(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R(E),XP(g)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • Q(C);CHECK
      • Refutation
        • B(k);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(f);CHECK,P-FLIGHT::R(E)+S(F),DCHECK
      • P(g);OGATE,P_SPINP(g),XS(F)::R(E),XP(g)
      • Q(b);SBLOCK::QAR2(C)
      • B(k);SBLOCK::QAR(C)+S(D)
      • P(i);::QAR2(C),XP(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).