MESON Chess Problem Database

Problem Display
PID: 229014 (1b6/2pNK2b/8/1p1pQ1R1/1pk2q1R/1rn2p2/3nr3/B1N2B2 w - - 0 1)

Hertmann, Sandor

13th Comm., El Ajedrez Argentino, 1926

1b6/2pNK2b/8/1p1pQ1R1/1pk2q1R/1rn2p2/3nr3/B1N2B2

#2

8 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxd4#
    • 1...Se4
      • 2.Qd4#
      • 2.Qxd5#
    • 1...c5
      • 2.Sb6#
  • Tries
    • 1.Bxe2+?
      • 1...Bd3
        • 2.Bxd3#
      • 1...Sxe2
        • 2.Qxd5#
      • 1...fxe2!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Se5#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Be4
        • 2.Qc5#
      • 1...Sde4
        • 2.Qd3#
      • 1...Sce4
        • 2.Qd4#
      • 1...d4
        • 2.Rc5#
      • 1...c5
        • 2.Sb6#
      • 1...c6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(h);OGATE::R1(D),XQ(h)
    • P(k);N_GUARD,SBLOCK::S(G)
  • Tries
    • Try
      • B(C);CHECK,N_SPINQ(E),XR(b)
      • Vars
        • B(l);N_GUARD,P_SPINB(l)::B(C),XB(l)
        • S(d);XB(C)::QAB1(E),XP(j)
      • Refutation
        • P(e);XB(C)
  • Actual
    • Q(E);
    • Threat
      • S(G)
    • Vars
      • Q(h);OGATE::R1(D),XQ(h)
      • B(l);N_PINQ(E),N_SPINQ(h)::QAR1(E)
      • S(a);N_PINQ(E),N_SPINQ(h)::QAB1(E)
      • S(d);N_PINQ(E),N_SPINQ(h)::QAR1(E)
      • P(j);N_SPINQ(h),OGATE::R1(F)
      • P(k);N_GUARD::S(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).