MESON Chess Problem Database

Problem Display
PID: 263163 (2Q1B1b1/b3N3/1p3p1n/1Pq2R2/1Pk1P3/4p3/1KN1P3/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Permyakov, Evgeni Nikolaevich

SuperProblem, 2021

2Q1B1b1/b3N3/1p3p1n/1Pq2R2/1Pk1P3/4p3/1KN1P3/8

#2

10 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Qxc6#
    • 1...Qc7
      • 2.Qxc7#
  • Tries
    • 1.Rf4?
      • threat
        • 2.e5#
      • 1...Qc6
        • 2.Qxc6#
      • 1...Bd5
        • 2.exd5#
      • 1...Sf5
        • 2.exf5#
      • 1...Bh7!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Sa3#
      • 1...Qxb4+
        • 2.S6xb4#
      • 1...Qd4+
        • 2.S6xd4#
      • 1...Qe5+
        • 2.Sxe5#
      • 1...Kxb5
        • 2.Sa5#
      • 1...Qxc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(c);OGATEB::QAR2(I),XQ(c)
    • Q(c);OGATEB::QAR(I),XQ(c)
  • Tries
    • Try
      • R(G);
      • Threat
        • R(G)+P(E)
      • Vars
        • Q(c);OGATEB::QAR2(I),XQ(c)
        • B(h);OGATE::R(G)+P(E),XB(h)
        • S(f);OGATE::R(G)+P(E),XS(f)
      • Refutation
        • B(h);
  • Actual
    • S(H);N_PINQ(c)
    • Threat
      • S(B)
    • Vars
      • Q(c);CHECK,XP(D)::QAR(I)+S(H),XQ(c)
      • Q(c);CHECK::QAR(I)+S(H),XQ(c)
      • Q(c);CHECK::QAR(I)+S(H),DCHECK,XQ(c)
      • K(b);P_SPINQ(c),S_CUTP(d),S_FLIGHT,XP(F)::B(J)+S(H)
      • Q(c);OGATE,P_SPINQ(c),XS(H)::QAR2(I),XQ(c)
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).