MESON Chess Problem Database

Problem Display
PID: 275821 (8/2brp1P1/1nrpP1p1/1bpk2P1/p1N2RpK/P2p2Np/5Bq1/1B2R2Q w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Pat a Mat, 2024

8/2brp1P1/1nrpP1p1/1bpk2P1/p1N2RpK/P2p2Np/5Bq1/1B2R2Q

#2

12 + 15

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qxe4#
    • 1...h2
      • 2.Qxg2#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
      • 1...Kxe6
        • 2.g8Q#
        • 2.g8B#
      • 1...Qe4
        • 2.Qxe4#
      • 1...dxe2!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc3#
      • 1...Qxf2+
        • 2.Sxf2#
      • 1...Qg3+
        • 2.Sxg3#
      • 1...Kxc4
        • 2.Ba2#
      • 1...Kxe6
        • 2.g8Q#
        • 2.g8B#
      • 1...Qxe4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(a);OGATE::QAB1(C),XQ(a)
    • P(c);N_GUARD::QAB(C),XQ(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(h);N_SPINQ(a),S_FLIGHT,XP(K)::P=Q
        • Q(a);OGATE::QAB1(C),XQ(a)
      • Refutation
        • P(b);XS(F)
  • Actual
    • S(F);N_PINQ(a)
    • Threat
      • S(F)
    • Vars
      • Q(a);CHECK,XB(D)::QAB(C)+S(F),XQ(a)
      • Q(a);CHECK::QAB(C)+S(F),XQ(a)
      • K(h);OGATEB,S_FLIGHT,XS(G)::B(A)
      • K(h);S_FLIGHT,XP(K)::P=Q
      • Q(a);OGATE,P_SPINQ(a),XS(F)::QAB1(C),XQ(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).