MESON Chess Problem Database

Problem Display
PID: 147146 (8/2N2p2/6bR/k1Pr4/1b6/1Rn4P/1P1B2PK/2q1QB2 w - - 0 1)

von Jobahaza, Andor

Wiener Schachzeitung, 1915

8/2N2p2/6bR/k1Pr4/1b6/1Rn4P/1P1B2PK/2q1QB2

#2

11 + 7

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Ra6#
    • 1...Bc2
      • 2.Ra6#
    • 1...Be4
      • 2.Ra6#
    • 1...Bf5
      • 2.Ra6#
    • 1...Bh5
      • 2.Ra6#
    • 1...Bh7
      • 2.Ra6#
    • 1...Sd1
      • 2.Ra3#
    • 1...Sa2
      • 2.Ra3#
    • 1...Se2
      • 2.Ra3#
    • 1...Sa4
      • 2.Bxb4#
    • 1...Se4
      • 2.Ra3#
  • Tries
    • 1.Ra3+?
      • 1...Sa4
        • 2.Bxb4#
      • 1...Bxa3!
    • 1.Qh4?
      • threat
        • 2.Qxb4#
      • 1...Ka4
        • 2.Ra3#
        • 2.Qxb4#
      • 1...Bxc5
        • 2.Rb5#
      • 1...Ba3
        • 2.Rxa3#
        • 2.Rb5#
      • 1...Be4
        • 2.Ra6#
      • 1...Sa2
        • 2.Ra3#
      • 1...Se4
        • 2.Ra3#
      • 1...Rd4!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qxb4#
      • 1...Ka4
        • 2.Ra3#
        • 2.Qxb4#
      • 1...Bxc5
        • 2.Rb5#
      • 1...Bxe4
        • 2.Ra6#
      • 1...Sxe4
        • 2.Ra3#
      • 1...Rd4
        • 2.Qa8#
      • 1...Ba3
        • 2.Rxa3#
        • 2.Rb5#
      • 1...Sa2
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • B(f);OGATE::R1(J)
    • B(f);OGATE,SBLOCK::R1(J)
    • S(b);N_GUARD,P_SPINB(c)::R(G)
    • S(b);OGATE,P_SPINB(c),SBLOCK::B(D),XB(c)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • S(b);OGATE,P_SPINB(c),P_SPINS(b)::B(D),XB(c)
      • Refutation
        • B(c);P_SPINS(b),XR(G)
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XB(c)
      • Vars
        • B(c);OGATE,P_SPINS(b),XP(I)::R1(G)
        • B(f);OGATE::R1(J)
        • S(b);N_GUARD,P_SPINB(c)::R(G)
      • Refutation
        • R(e);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XB(c)
    • Vars
      • B(c);OGATE,P_SPINS(b),XP(I)::R1(G)
      • B(f);OGATE,XQ(A)::R1(J)
      • S(b);N_GUARD,P_SPINB(c),XQ(A)::R(G)
      • R(e);OGATE::QAR(A)
      • S(b);N_GUARD,P_SPINB(c)::R(G)
HTML5 logo

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).