MESON Chess Problem Database

Problem Display
PID: 250219 (2rN2B1/b1P2q2/2p1b3/2pk1N1p/3p1P1P/1P3K2/8/6Q1 w - - 0 1)

Torok, Andras

Nepszava, 1927

2rN2B1/b1P2q2/2p1b3/2pk1N1p/3p1P1P/1P3K2/8/6Q1

#2

9 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc7
      • 2.Bxe6#
    • 1...Qg7
      • 2.Bxe6#
    • 1...Qh7
      • 2.Bxe6#
    • 1...Qf8
      • 2.Bxe6#
  • Tries
    • 1.Se3+?
      • 1...dxe3
        • 2.Qd1#
      • 1...Kd6!
    • 1.Qe1?
      • threat
        • 2.Qe4#
        • 2.Qe5#
      • 1...Qxc7
        • 2.Bxe6#
        • 2.Qe4#
        • 2.Qxe6#
      • 1...Bxf5
        • 2.Qe5#
      • 1...c4
        • 2.Qe5#
      • 1...Qf6
        • 2.Qe4#
      • 1...Qg7
        • 2.Bxe6#
        • 2.Qe4#
        • 2.Qxe6#
      • 1...Qxf5!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qe5#
      • 1...Qxf5
        • 2.Qd7#
      • 1...Qxc7
        • 2.Bxe6#
      • 1...Qxg7
        • 2.Bxe6#
      • 1...Qf6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(h);OGATE,P_SPINB(f),XP(G)::B(I),XB(f)
    • Q(h);OGATE,P_SPINB(f)::B(I),XB(f)
  • Tries
    • Try
      • S(F);CHECK,P_SPINP(D)
      • Vars
        • P(a);XS(F)::QAR(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);P_SPINQ(h),XS(F)::QAR1(A)
        • P(b);::QAR1(A)
        • Q(h);P_SPINB(f)::QAB1(A)
      • Refutation
        • Q(h);P_PINP(D),P_SPINB(f),XS(F)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • Q(h);OGATE,P_PINP(D),P_SPINB(f),XS(F)::QAR2(A)
      • Q(h);OGATE,P_SPINB(f),XP(G)::B(I),XB(f)
      • Q(h);OGATE,P_SPINB(f),XQ(A)::B(I),XB(f)
      • Q(h);OGATE,P_SPINB(f)::QAR2(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).