MESON Chess Problem Database

Problem Display
PID: 256510 (6rB/2p2pr1/1pP5/4QR2/pkP1R3/8/KN2q3/4b3 w - - 0 1)

Mauritius, Ch

Wiener Schachzeitung, 1938

6rB/2p2pr1/1pP5/4QR2/pkP1R3/8/KN2q3/4b3

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sxd3#
    • 1...Qxc4+
      • 2.Rxc4#
    • 1...Qg4
      • 2.Sd3#
    • 1...Qh5
      • 2.Sd3#
    • 1...Qxb2+
      • 2.Qxb2#
    • 1...Rg1
      • 2.Qb5#
      • 2.Qe7#
    • 1...Rg2
      • 2.Qb5#
      • 2.Qe7#
    • 1...Rg3
      • 2.Qb5#
      • 2.Qe7#
    • 1...Rg4
      • 2.Qb5#
      • 2.Qe7#
    • 1...Rg5
      • 2.Qb5#
      • 2.Qe7#
    • 1...Rg6
      • 2.Qb5#
    • 1...Rh7
      • 2.Qb5#
      • 2.Qe7#
    • 1...Bc3
      • 2.Qb5#
      • 2.Qe7#
  • Tries
    • 1.Qc3+?
      • 1...Bxc3
        • 2.Rb5#
      • 1...Kxc3!
    • 1.Qd4?
      • threat
        • 2.Rb5#
      • 1...Qxc4+
        • 2.Qxc4#
      • 1...Qxb2+
        • 2.Qxb2#
      • 1...b5
        • 2.Rxb5#
      • 1...Qh5
        • 2.Sd3#
      • 1...Rg5!
  • Keys
    • 1.Qf6!
      • threat
        • 2.Rb5#
      • 1...Qxc4+
        • 2.Rxc4#
      • 1...Qxb2+
        • 2.Qxb2#
      • 1...b5
        • 2.Rxb5#
      • 1...Qh5
        • 2.Sd3#
      • 1...Rg5
        • 2.Qe7#

This is a version

Version by Udo Degener (Albrecht Collection).

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_PINS(B)::S(B),XQ(b)
    • Q(b);CHECK,N_PINS(B),OGATE,P_SPINQ(b),XP(C)::R1(D),XQ(b)
    • Q(b);N_PINS(B)::S(B)
    • Q(b);CHECK,OGATE,XS(B)::QAR2(E),XQ(b)
    • R(h);::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • B(a);SBLOCK,XQ(E)::R1(F)
      • Refutation
        • K(d);P_SPINR(h),S_FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Threat
        • R1(F)
      • Vars
        • Q(b);CHECK,N_PINS(B),OGATE,P_SPINQ(b),XP(C)::QAR1(E),XQ(b)
        • Q(b);CHECK,OGATE,XS(B)::QAR2(E),XQ(b)
        • P(e);::R1(F),XP(e)
        • Q(b);N_PINS(B)::S(B)
      • Refutation
        • R(h);
  • Actual
    • Q(E);
    • Threat
      • R1(F)
    • Vars
      • Q(b);CHECK,N_PINS(B),OGATE,P_SPINQ(b),XP(C)::R1(D),XQ(b)
      • Q(b);CHECK,OGATE,XS(B)::QAR2(E),XQ(b)
      • P(e);::R1(F),XP(e)
      • Q(b);N_PINS(B)::S(B)
      • R(h);::QAB(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).