MESON Chess Problem Database

Problem Display
PID: 261149 (r3kNKn/Pp1p4/1p1p4/6P1/8/8/7Q/r7 w - - 0 1)

Moutecidis, Pavlos

Soroka, Ivan Ivanovich

Sorokin, Evgeny Pavlovich

3rd Comm., Neue Zurcher Zeitung, 1981

r3kNKn/Pp1p4/1p1p4/6P1/8/8/7Q/r7

#2

5 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Qe2#
  • Tries
    • 1.Qxd6?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qe5#
      • 1...Rd1!
    • 1.Qh7?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qe4#
      • 1...Sf7!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qxd7#
      • 1...Ke7
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Rd8
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::QAR(A)
  • Tries
    • Try
      • Q(A);XP(c)
      • Threat
        • QAB1(A),XP(e)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(e)::QAR1(A),XP(e)
        • R(f);SBLOCK::QAR(A)
      • Refutation
        • R(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(e)
      • Vars
        • K(g);P-FLIGHT::QAR1(A),XP(e)
        • R(f);SBLOCK::QAR(A)
      • Refutation
        • S(h);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XP(e)
    • Vars
      • K(g);P-FLIGHT,P_PINS(D)::QAR1(A),XP(e)
      • K(g);P-FLIGHT::QAR1(A),XP(e)
      • R(f);SBLOCK::QAR(A)
HTML5 logo

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).