MESON Chess Problem Database

Problem Display
PID: 241171 (3n2Q1/8/3pr3/N1pk4/1p3RN1/2b2P2/1rnPP2K/1B6 w - - 0 1)

Heyl, Peter

Sachsische Zeitung, 2003

3n2Q1/8/3pr3/N1pk4/1p3RN1/2b2P2/1rnPP2K/1B6

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.e4#
    • 1...Sd4
      • 2.Be4#
      • 2.e4#
    • 1...Sf7
      • 2.Qa8#
  • Tries
    • 1.Se3+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Sxe3!
    • 1.Sf6+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Bxf6!
    • 1.Rc4?
      • threat
        • 2.e4#
      • 1...Se3
        • 2.Be4#
      • 1...Sf7
        • 2.Qa8#
      • 1...Be5+!
    • 1.dxc3?
      • threat
        • 2.Rf5#
        • 2.e4#
        • 2.c4#
      • 1...c4
        • 2.Rf5#
      • 1...Sa1
        • 2.Be4#
        • 2.Rf5#
        • 2.c4#
      • 1...Se1
        • 2.Be4#
        • 2.Rf5#
        • 2.c4#
      • 1...Sa3
        • 2.Be4#
        • 2.Rf5#
      • 1...Se3
        • 2.Be4#
      • 1...Sd4
        • 2.Be4#
        • 2.c4#
      • 1...Sc6
        • 2.e4#
        • 2.c4#
      • 1...Sf7
        • 2.Qa8#
        • 2.c4#
      • 1...bxc3!
  • Keys
    • 1.d4!
      • threat
        • 2.Sf6#
      • 1...Bxd4
        • 2.e4#
      • 1...Sxd4
        • 2.Be4#
      • 1...cxd4
        • 2.Rf5#
      • 1...Sf7
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(c);SBLOCK::P(C)
    • S(i);N_SPINR(h),OGATE::QAB(I)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(f);N_SPINR(h),P-FLIGHT::QAR2(I)
      • Refutation
        • S(b);XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • K(f);N_SPINR(h),P-FLIGHT::QAR2(I)
      • Refutation
        • B(c);XS(G)
    • Try
      • R(F);
      • Threat
        • P(C)
      • Vars
        • S(b);OGATE::B(A)
        • S(i);N_SPINR(h),OGATE::QAB(I)
      • Refutation
        • B(c);CHECK
    • Try
      • P(B);XB(c)
      • Threat
        • DUALS(3)
      • Vars
        • P(e);::R(F)
        • S(b);OGATE,P_PINP(C)::B(A)
      • Refutation
        • P(d);XP(B)
  • Actual
    • P(B);
    • Threat
      • S(G)
    • Vars
      • B(c);SBLOCK,XP(B)::P(C)
      • S(b);OGATE,P_PINP(C),SBLOCK,XP(B)::B(A)
      • P(e);SBLOCK,XP(B)::R(F)
      • S(i);N_SPINR(h),OGATE::QAB(I)
HTML5 logo

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).