MESON Chess Problem Database

Problem Display
PID: 205041 (8/8/3Rpp1N/K3krnN/p5r1/4B3/2Q2n2/3R3b w - - 0 1)

Seilberger, Johann Joseph Petrus Adrianus

Western Daily Mercury, 1921

(First published on Fri Jan 21 1921)

8/8/3Rpp1N/K3krnN/p5r1/4B3/2Q2n2/3R3b

#2

7 + 9

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qc5#
    • 1...Be4
      • 2.Qb2#
      • 2.Qc3#
    • 1...Sfh3
      • 2.Sxg4#
    • 1...Sfe4
      • 2.Sxg4#
    • 1...Sf3
      • 2.Sf7#
    • 1...Sgh3
      • 2.Sf7#
    • 1...Sge4
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
    • 1...Sh7
      • 2.Sf7#
  • Tries
    • 1.Rxe6+?
      • 1...Sxe6
        • 2.Sf7#
        • 2.Qxf5#
      • 1...Kxe6+!
    • 1.Qb2+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Ke4+!
    • 1.Qc3+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Ke4+!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Bf4#
      • 1...Ke4+
        • 2.Bc5#
      • 1...Re4
        • 2.Qb5#
      • 1...Rgf4
        • 2.Bxf4#
      • 1...Rff4
        • 2.Bxf4#
      • 1...Be4
        • 2.Qb2#
      • 1...Sfe4
        • 2.Sxg4#
      • 1...Sge4
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(d);SBLOCK,S_CUTB(a)::QAR2(B)
    • S(b);N_GUARD::S(G),XR(d)
    • S(g);N_GUARD::S(G)
    • S(g);N_GUARD::S(G),XS(g)
  • Tries
    • Try
      • R(F);CHECK,XP(h)
      • Refutation
        • K(e);CHECK,P-FLIGHT,XR(F)
    • Try
      • Q(B);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAB1(B),XR(d)
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAB1(B),XR(d)
      • Refutation
        • K(e);CHECK,P-FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR(B)+B(C),DCHECK
    • Vars
      • K(e);CHECK,P-FLIGHT::QAR(B)+B(C)
      • R(d);SBLOCK,S_CUTB(a)::QAR(B)
      • R(d);::QAR(B)+B(C),DCHECK,XR(d)
      • R(f);::QAR(B)+B(C),DCHECK,XR(f)
      • B(a);SBLOCK,S_CUTR(d)::QAB(B)
      • S(b);N_GUARD,SBLOCK::S(G),XR(d)
      • S(g);N_GUARD,SBLOCK::S(G)
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).