MESON Chess Problem Database

Problem Display
PID: 87839 (3N4/bB1R4/2p3b1/4k1P1/K2n1rP1/3R2B1/pQP2Nn1/q7 w - - 0 1)

Szugyi, Gyula

The Problemist, 1930

3N4/bB1R4/2p3b1/4k1P1/K2n1rP1/3R2B1/pQP2Nn1/q7

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Rd5#
  • Tries
    • 1.Re3+?
      • 1...Be4
        • 2.Sd3#
        • 2.Rxe4#
      • 1...Sxe3!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qd6#
      • 1...Sxc2
        • 2.Re7#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bb8
        • 2.Qc5#
      • 1...Se2
        • 2.Re7#
      • 1...Sb3
        • 2.Re7#
      • 1...Sf3
        • 2.Re7#
      • 1...Sb5
        • 2.Re7#
      • 1...Sf5
        • 2.Qe4#
      • 1...Se6
        • 2.Sxc6#
      • 1...c5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD::R1(J)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • S(c);XR(D)
  • Actual
    • Q(A);N_PINS(d)
    • Threat
      • QAB1(A)
    • Vars
      • S(d);N_GUARD,P_PINQ(A),XP(B)::R(J)
      • B(i);N_GUARD::QAR2(A),XB(i)
      • B(i);N_GUARD::QAR2(A)
      • S(d);N_GUARD,P_PINQ(A)::R(J)
      • S(d);OGATE,P_PINQ(A)::QAR1(A)
      • S(d);N_GUARD,P_PINQ(A),SBLOCK::S(K),XP(g)
      • P(g);N_GUARD::R1(J)
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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).