MESON Chess Problem Database

Problem Display
PID: 204562 (q5Q1/7p/1p6/2P2p2/1r2kBR1/r2nP1p1/b1B1P3/3N2K1 w - - 0 1)

Gross, Izidor

Brisbane Courier, 1925

q5Q1/7p/1p6/2P2p2/1r2kBR1/r2nP1p1/b1B1P3/3N2K1

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rab3
      • 2.Qe6#
      • 2.Qxa8#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Raa4
      • 2.Sc3#
      • 2.Bxd3#
    • 1...Ra5
      • 2.Sc3#
      • 2.Bxd3#
    • 1...Ra6
      • 2.Sc3#
      • 2.Bxd3#
    • 1...Ra7
      • 2.Sc3#
      • 2.Bxd3#
    • 1...Rbb3
      • 2.Qc4#
      • 2.Qe6#
    • 1...Rc4
      • 2.Qe6#
    • 1...Bb1
      • 2.Qe6#
    • 1...Bb3
      • 2.Sc3#
      • 2.Bxd3#
    • 1...Be6
      • 2.Qxe6#
    • 1...g2
      • 2.Sf2#
  • Tries
    • 1.Bd6+?
      • 1...f4
        • 2.Rxf4#
      • 1...fxg4!
    • 1.Bc7+?
      • 1...f4
        • 2.Rxf4#
      • 1...fxg4!
    • 1.Bb8+?
      • 1...f4
        • 2.Rxf4#
      • 1...fxg4!
    • 1.Qxa8+?
      • 1...Rxa8
        • 2.Sc3#
      • 1...Bd5!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Sc3#
      • 1...Raxb3
        • 2.Qxa8#
      • 1...Rbxb3
        • 2.Qc4#
      • 1...Sxf4
        • 2.Qe6#
      • 1...fxg4
        • 2.Qxh7#
      • 1...Rc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::S(A),XR(b)
    • R(e);S_CUTB(a)::QAR2(I)
    • B(a);N_GUARD::QAR2(I)
    • B(a);N_GUARD::QAR2(I),XB(a)
    • P(d);N_GUARD::S(A)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R1(G),XP(g)
      • Refutation
        • P(g);XR(G)
    • Try
      • B(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R1(G),XP(g)
      • Refutation
        • P(g);XR(G)
    • Try
      • B(F);CHECK
      • Vars
        • P(g);P_SPINP(g)::R1(G),XP(g)
      • Refutation
        • P(g);XR(G)
    • Try
      • Q(I);CHECK,XQ(j)
      • Vars
        • R(b);XQ(I)::S(A)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • B(C);N_PINS(c)
    • Threat
      • S(A)
    • Vars
      • R(b);N_GUARD,XB(C)::QAB(I),XQ(j)
      • R(e);N_GUARD,XB(C)::QAR2(I)
      • S(c);N_GUARD,P_SPINS(c),XB(F)::QAR2(I)
      • P(g);OGATEB,XR(G)::QAB(I),XP(i)
      • R(e);N_GUARD::QAR2(I),XR(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).