MESON Chess Problem Database

Problem Display
PID: 99477 (4k2n/2p2pK1/2P5/4NpB1/1r6/1Q6/n1b1B3/4R3 w - - 0 1)

Bakcsi, Gyorgy

Magyar Sakkelet, 1963

4k2n/2p2pK1/2P5/4NpB1/1r6/1Q6/n1b1B3/4R3

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qb8#
    • 1...Rc4
      • 2.Qb8#
    • 1...Re4
      • 2.Qb8#
    • 1...Rf4
      • 2.Qb8#
    • 1...Rg4
      • 2.Qb8#
    • 1...Rh4
      • 2.Qb8#
    • 1...Rb8
      • 2.Qxb8#
    • 1...Sg6
      • 2.Qxf7#
  • Tries
    • 1.Sxf7?
      • threat
        • 2.Qe6#
      • 1...Rxb3
        • 2.Bd3#
      • 1...Bxb3
        • 2.Bc4#
      • 1...Rc4
        • 2.Qb8#
      • 1...Re4
        • 2.Qb8#
      • 1...Sg6!
    • 1.Rh1?
      • threat
        • 2.Rxh8#
      • 1...Rh4
        • 2.Qb8#
      • 1...Sg6
        • 2.Qxf7#
      • 1...f6!
    • 1.Qd5?
      • threat
        • 2.Qd7#
        • 2.Qd8#
      • 1...f6
        • 2.Qd7#
      • 1...Rb8
        • 2.Qd7#
      • 1...Rd4!
    • 1.Qxb4?
      • threat
        • 2.Qe7#
        • 2.Qf8#
        • 2.Qb8#
      • 1...f6
        • 2.Qf8#
      • 1...Sg6
        • 2.Qb8#
      • 1...Sxb4!
  • Keys
    • 1.Bh5!
      • threat
        • 2.Qe6#
      • 1...Rxb3
        • 2.Sd3#
      • 1...Bxb3
        • 2.Sc4#
      • 1...Rc4
        • 2.Qb8#
      • 1...Sg6
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(c);OGATE::QAR(C)
    • R(c);OGATE,P_PINB(E)::QAR(C)
    • R(c);OGATE::QAR(C),XR(c)
    • S(h);N_GUARD::QAB1(C),XP(f)
  • Tries
    • Try
      • S(D);XP(f)
      • Threat
        • QAR2(C)
      • Vars
        • R(c);N_GUARD,XQ(C)::R(A)+B(B)
        • B(b);N_GUARD,XQ(C)::R(A)+B(B)
        • R(c);OGATE::QAR(C)
      • Refutation
        • S(h);
    • Try
      • R(A);
      • Threat
        • R(A),XS(h)
      • Vars
        • R(c);OGATE::QAR(C)
        • S(h);N_GUARD::QAB1(C),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::QAB1(C)
        • R(c);::QAB1(C)
      • Refutation
        • R(c);
    • Try
      • Q(C);XR(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(f);::QAR1(C)
        • S(h);::QAR(C)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • B(B);P_PINP(f)
    • Threat
      • QAR2(C)
    • Vars
      • R(c);N_GUARD,XQ(C)::R(A)+S(D)
      • B(b);N_GUARD,XQ(C)::R(A)+S(D)
      • R(c);OGATE::QAR(C)
      • S(h);N_GUARD,N_SPINP(f)::QAB1(C),XP(f)
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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).