MESON Chess Problem Database

Problem Display
PID: 276462 (b1r5/4p3/2QBK3/2PP3R/2qkN1n1/R3pP2/4B3/4n3 w - - 0 1)

Burbach, Johannes Jacob

To Mat, 1952

b1r5/4p3/2QBK3/2PP3R/2qkN1n1/R3pP2/4B3/4n3

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5+
      • 2.Rxd5#
    • 1...Qa4
      • 2.Rxa4#
      • 2.Qxa4#
    • 1...Qxc5
      • 2.Bxc5#
    • 1...Sf2
      • 2.Be5#
    • 1...Sh2
      • 2.Be5#
    • 1...Se5
      • 2.Bxe5#
    • 1...Sf6
      • 2.Be5#
    • 1...Sh6
      • 2.Be5#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Rxc4#
      • 1...Qxa4
        • 2.Qxa4#
      • 1...Qb4
        • 2.Rxb4#
      • 1...Se5
        • 2.Bxe5#
      • 1...Sd3!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qxc4#
      • 1...Bxd5+
        • 2.Rxd5#
      • 1...Qxa4
        • 2.Rxa4#
      • 1...Rxc5
        • 2.Bxc5#
      • 1...Qb4
        • 2.Qxb4#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Se5
        • 2.Bxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(c);CHECK,OGATE,XP(F)::R1(G),XQ(c)
    • Q(c);N_PINP(F),OGATE,XP(E)::B(I),XQ(c)
    • S(e);N_GUARD::B(I)
    • S(e);N_GUARD::B(I),XS(e)
  • Tries
    • Try
      • R(B);P_PINQ(c)
      • Threat
        • R1(B),XQ(c)
      • Vars
        • Q(c);N_PINP(F),N_SPINQ(c),OGATE,XR(B)::QAR(H),XQ(c)
        • Q(c);N_PINP(F),OGATEB::R(B),XQ(c)
        • S(e);N_GUARD::B(I),XS(e)
      • Refutation
        • S(a);
  • Actual
    • Q(H);P_PINQ(c)
    • Threat
      • QAR1(H),XQ(c)
    • Vars
      • B(g);CHECK,OGATE,XP(F)::R1(G),XB(g)
      • Q(c);N_PINP(F),N_SPINQ(c),OGATE,XQ(H)::R(B),XQ(c)
      • R(h);OGATE,XP(E)::B(I),XR(h)
      • Q(c);N_PINP(F),OGATEB::QAR2(H),XQ(c)
      • S(a);N_GUARD::R1(B),XS(a)
      • S(e);N_GUARD::B(I),XS(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).