MESON Chess Problem Database

Problem Display
PID: 109167 (1b6/rn3Q1K/1r2p1N1/1R3n2/2kP4/pR6/8/Bb6 w - - 0 1)

Pfeiffer, Mieczyslaw

2nd Prize, Przepiorka MT, 1949-1950

1b6/rn3Q1K/1r2p1N1/1R3n2/2kP4/pR6/8/Bb6

#2

7 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Se5#
    • 1...Bd3
      • 2.R3b4#
    • 1...Be5
      • 2.Sxe5#
    • 1...Bd6
      • 2.Qxe6#
    • 1...Sfd6
      • 2.Qxe6#
    • 1...Sbd6
      • 2.Se5#
  • Keys
    • 1.Qd7!
      • threat
        • 2.Rc3#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...Rc6
        • 2.R5b4#
      • 1...Rd6
        • 2.Se5#
      • 1...Bd6
        • 2.Qxe6#
      • 1...Sfd6
        • 2.Qxe6#
      • 1...Sbd6
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(e);S_CUTB(i)::S(E)
    • B(a);SBLOCK::R1(B)
    • B(i);N_GUARD::S(E),XB(i)
    • B(i);S_CUTR(e)::QAB(F),XP(f)
    • S(d);P_PINS(E),S_CUTR(e)::QAB(F),XP(f)
    • S(h);P_PINQ(F),S_CUTB(i)::S(E)
  • Actual
    • Q(F);N_PINP(f)
    • Threat
      • R1(B)
    • Vars
      • R(e);OGATE,XR(D)::QAB1(F),XR(e)
      • R(e);N_GUARD::R1(D)
      • R(e);S_CUTB(i)::S(E)
      • B(i);S_CUTR(e)::QAB(F),XP(f)
      • S(d);P_PINS(E),S_CUTR(e)::QAB(F),XP(f)
      • S(h);P_PINQ(F),S_CUTB(i)::S(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).