MESON Chess Problem Database

Problem Display
PID: 261535 (6K1/1b3p2/5rp1/4N3/R2Pk1P1/1Q3pP1/2P2b2/1B6 w - - 0 1)

Nikolay, Josef

Neue Zurcher Zeitung, 1959

6K1/1b3p2/5rp1/4N3/R2Pk1P1/1Q3pP1/2P2b2/1B6

#2

9 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Qxf3#
    • 1...Rb6
      • 2.Qxf3#
    • 1...Rc6
      • 2.Qxf3#
    • 1...Rd6
      • 2.Qxf3#
    • 1...Re6
      • 2.Qxf3#
    • 1...Be3
      • 2.c3#
    • 1...Bd5
      • 2.Qd3#
  • Keys
    • 1.Sxf7!
      • threat
        • 2.Sg5#
      • 1...Rxf7
        • 2.Qe6#
      • 1...Bxg3
        • 2.d5#
      • 1...Bxd4
        • 2.c4#
      • 1...Rf5
        • 2.Sd6#
      • 1...Be3
        • 2.c3#
      • 1...Bd5
        • 2.Qd3#
      • 1...g5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::QAB1(C),XP(b)
    • B(a);SBLOCK::B(A)+P(B)
    • B(f);SBLOCK::QAB1(C)
  • Actual
    • S(H);XP(g)
    • Threat
      • S(H)
    • Vars
      • R(d);N_GUARD,XS(H)::QAR2(C)
      • B(a);N_GUARD,XP(D)::R(E)+P(F)
      • B(a);P_SPINB(a),SBLOCK,XP(F)::B(A)+P(B)
      • R(d);N_GUARD::S(H)
      • B(a);SBLOCK::B(A)+P(B)
      • B(f);P_PINS(H),SBLOCK::QAB1(C)
      • P(e);::S(H),XP(e)
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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).