MESON Chess Problem Database

Problem Display
PID: 205777 (2rBn3/3R1np1/4kpRp/2b4K/Qp2B3/3N4/8/8 w - - 0 1)

Bomsdorf, Paul

3rd Prize, Munchner Post, 1925

2rBn3/3R1np1/4kpRp/2b4K/Qp2B3/3N4/8/8

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Sf4#
    • 1...Sfd6
      • 2.Re7#
    • 1...Sed6
      • 2.Re7#
  • Tries
    • 1.Re7+?
      • 1...Kd6
        • 2.Qd7#
      • 1...Bxe7!
    • 1.Qc6+?
      • 1...Bd6
        • 2.Re7#
      • 1...Sfd6
        • 2.Re7#
      • 1...Sed6
        • 2.Re7#
      • 1...Rxc6!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qg4#
      • 1...Kxd7
        • 2.Sxc5#
      • 1...Se5
        • 2.Sf4#
      • 1...Sfd6
        • 2.Re7#
      • 1...Sed6
        • 2.Re7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::S(A)
    • S(f);SBLOCK,S_CUTB(b)::R1(F)
    • S(i);SBLOCK,S_CUTB(b)::R1(F)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • B(b);XR(F)
    • Try
      • Q(B);CHECK
      • Vars
        • B(b);P_SPINB(b)::R1(F)
        • S(f);P_SPINS(f)::R1(F)
        • S(i);P_SPINS(i)::R1(F)
      • Refutation
        • R(h);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • K(c);N_SPINP(d),S_FLIGHT,XR(F)::QAR(B)+S(A),DCHECK,XB(b)
      • S(f);SBLOCK::S(A)
      • S(f);SBLOCK,S_CUTB(b)::R1(F)
      • S(i);SBLOCK,S_CUTB(b)::R1(F)
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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).