MESON Chess Problem Database

Problem Display
PID: 201471 (8/p1B5/8/2k1n2R/KNBrp3/1p3r2/1PbN1Q1b/2R3nq w - - 0 1)

Nagy, Odon

1st Prize, Budai Sakkozo Tarsasag, 1922

8/p1B5/8/2k1n2R/KNBrp3/1p3r2/1PbN1Q1b/2R3nq

#2

9 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rg3
      • 2.Rxe5#
    • 1...Rf4
      • 2.Rxe5#
    • 1...Bd1
      • 2.Sxe4#
    • 1...Bd3
      • 2.Sxb3#
      • 2.Bxd3#
  • Tries
    • 1.Sxe4+?
      • 1...Bxe4
        • 2.Bd3#
      • 1...Kxc4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sxe4#
      • 1...Rxf2
        • 2.Sxb3#
      • 1...Rc3
        • 2.Qf8#
      • 1...Rd3
        • 2.Qf8#
      • 1...Re3
        • 2.Qf8#
      • 1...Rg3
        • 2.Qf8#
      • 1...Rh3
        • 2.Qf8#
      • 1...Rf4
        • 2.Sxb3#
      • 1...Rf5
        • 2.Sxb3#
      • 1...Rf6
        • 2.Sxb3#
      • 1...Rf7
        • 2.Sxb3#
      • 1...Rf8
        • 2.Sxb3#
        • 2.Qxf8#
      • 1...Sc4
        • 2.Sa6#
      • 1...e3
        • 2.Sxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • R(f);S_CUTB(d)::R(H),XS(j)
    • B(c);N_GUARD::S(C),XP(h)
  • Tries
    • Try
      • S(C);CHECK,XP(h)
      • Vars
        • B(c);XS(C)::R(A)+B(G)
      • Refutation
        • K(i);N_SPINR(g),N_SPINS(j),P-FLIGHT,P_SPINB(c),XB(G)
  • Actual
    • B(G);N_PINS(j),P_PINB(c),P_SPINS(F)
    • Threat
      • S(C),XP(h)
    • Vars
      • R(f);N_GUARD,N_SPINR(g),XQ(D)::S(C),XP(e)
      • R(f);N_SPINB(c),OGATE::QAB(D)
      • R(f);OGATE::QAB(D)
      • R(f);N_SPINR(g),OGATE::QAB(D)
      • R(f);N_GUARD::S(C),XP(e)
      • S(j);N_PINS(F),N_SPINB(c)::S(F)
      • P(h);N_SPINR(g),S_CUTR(f)::S(C),XP(e)
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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).