MESON Chess Problem Database

Problem Display
PID: 143358 (b2b4/4p3/n2P2p1/1B1k4/2NP2Q1/B2RP3/4r2p/4N1nK w - - 0 1)

Bakay, Bela

Magyar Sakkvilag, 1930

b2b4/4p3/n2P2p1/1B1k4/2NP2Q1/B2RP3/4r2p/4N1nK

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.e4#
    • 1...Rb2
      • 2.e4#
    • 1...Rc2
      • 2.e4#
    • 1...Rd2
      • 2.e4#
    • 1...Rf2
      • 2.e4#
    • 1...Rg2
      • 2.e4#
    • 1...Rxe3
      • 2.Sxe3#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Sc5
      • 2.dxc5#
    • 1...Sc7
      • 2.Sb6#
    • 1...e5
      • 2.dxe5#
  • Tries
    • 1.Qf5+?
      • 1...e5
        • 2.Qxe5#
        • 2.dxe5#
      • 1...gxf5!
    • 1.Qg5+?
      • 1...Ke4
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Ke6+!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qe6#
      • 1...Kxc4+
        • 2.d5#
      • 1...Rxe3
        • 2.Sxe3#
      • 1...Sc5
        • 2.dxc5#
      • 1...Sc7
        • 2.Sb6#
      • 1...e5
        • 2.dxe5#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::P(E)
    • R(b);XP(E)::S(F),XR(b)
    • B(i);N_GUARD::S(F),XB(i)
    • S(e);OGATE::R(D)+P(G),XS(e)
    • S(e);S_CUTB(i)::S(F)
    • P(g);OGATE::R(D)+P(G),XP(g)
  • Tries
    • Try
      • Q(H);CHECK
      • Refutation
        • P(f);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(H)
        • P(g);P_SPINP(g)::QAR1(H),XP(g)
      • Refutation
        • K(d);CHECK,S_FLIGHT
  • Actual
    • B(I);
    • Threat
      • QAB1(H)
    • Vars
      • K(d);CHECK,OGATE,S_FLIGHT,XS(F)::QAR(H)+P(G)
      • R(b);XP(E)::S(F),XR(b)
      • S(e);OGATE::R(D)+P(G),XS(e)
      • S(e);S_CUTB(i)::S(F)
      • P(g);OGATE::R(D)+P(G),XP(g)
      • P(g);::QAB1(H),XP(g)
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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).