MESON Chess Problem Database

Problem Display
PID: 273668 (b3R3/2b1Bp2/1pP5/4kP2/2R4P/pN1pN1p1/1q1p4/Q1nK4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Shakhmatnaya kompozitsiya, 2023

b3R3/2b1Bp2/1pP5/4kP2/2R4P/pN1pN1p1/1q1p4/Q1nK4

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qd4
      • 2.Qxd4#
    • 1...a2
      • 2.Qxb2#
    • 1...f6
      • 2.Bxa3#
      • 2.Bb4#
      • 2.Bc5#
      • 2.Bf8#
  • Tries
    • 1.Sxd2?
      • threat
        • 2.Sf3#
        • 2.Re4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Bxc6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sf3#
      • 1...Qc2+
        • 2.Sdxc2#
      • 1...Qb3+
        • 2.Sxb3#
      • 1...Ke4
        • 2.Bd6#
      • 1...Kf4
        • 2.Bg5#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Bxc6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::QAB(A),XQ(b)
    • Q(b);OGATE::QAB1(A),XQ(b)
    • P(d);N_GUARD::QAB(A),XQ(b)
  • Tries
    • Try
      • S(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);OGATE::QAB1(A),XQ(b)
      • Refutation
        • B(k);XP(H)
  • Actual
    • S(C);N_PINQ(b)
    • Threat
      • S(C)
    • Vars
      • Q(b);CHECK::QAB(A)+S(C),XQ(b)
      • K(g);N_GUARD,P-FLIGHT::R(J)+B(I)
      • K(g);N_GUARD,S_FLIGHT::B(I)
      • Q(b);OGATE,P_SPINQ(b),XS(C)::QAB1(A),XQ(b)
      • B(k);XP(H)::S(C),XB(k)
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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).