MESON Chess Problem Database

Problem Display
PID: 269612 (3R1B1n/1RQ1p2B/p1K2Nnr/P7/1P2P2p/NpkPP3/1p1p4/1b6 w - - 0 1)

Cristoffanini, Guido

Shakhmaty v SSSR, 1932

3R1B1n/1RQ1p2B/p1K2Nnr/P7/1P2P2p/NpkPP3/1p1p4/1b6

#2

13 + 11

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd3
      • 2.Sd5#
    • 1...Sf4
      • 2.Qe5#
    • 1...Se5+
      • 2.Qxe5#
    • 1...Sxf8
      • 2.Qe5#
    • 1...exf6
      • 2.Kb6#
    • 1...e5
      • 2.Kb6#
    • 1...e6
      • 2.Kb6#
  • Tries
    • 1.Sb5+?
      • 1...Kxb4
        • 2.Rd4#
      • 1...axb5
        • 2.Kxb5#
      • 1...Kc2!
  • Keys
    • 1.e5!
      • threat
        • 2.Se4#
      • 1...Sxe5+
        • 2.Qxe5#
      • 1...Bxd3
        • 2.Sd5#
      • 1...Sxf8
        • 2.Kd5#
      • 1...exf6
        • 2.Kb6#
      • 1...Sf4
        • 2.Kd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK,XP(B)::S(H)
    • S(h);N_GUARD,P_PINS(H)::QAB(J)
    • S(h);CHECK,N_GUARD,P_PINS(H)::QAB(J),XS(h)
    • S(h);N_GUARD,P_PINS(H),XB(M)::QAB(J)
    • P(j);XS(H)::QAR(J)+K(G)
    • P(j);::QAR(J)+K(G)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);N_GUARD,P_SPINP(j),S_CUTP(g),S_FLIGHT,XP(D)::R(L)
        • P(g);XS(A)::QAR(J)+K(G),XP(g)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • P(E);
    • Threat
      • S(H)
    • Vars
      • S(h);CHECK,OGATE,P_PINS(H),XP(E)::QAB(J),XS(h)
      • B(a);SBLOCK,XP(B)::S(H)
      • S(h);P_PINS(H),XB(M)::QAR(J)+K(G)
      • P(j);XS(H)::QAR(J)+K(G)
      • S(h);P_PINS(H)::QAR(J)+K(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).