MESON Chess Problem Database

Problem Display
PID: 75126 (3K3N/3pP3/n2kbn1R/8/1P4pb/2Q2Pp1/8/4R3 w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2007

3K3N/3pP3/n2kbn1R/8/1P4pb/2Q2Pp1/8/4R3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Rd1#
    • 1...Bd5
      • 2.e8S#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sc7
      • 2.Qc5#
    • 1...Sb8
      • 2.Qc5#
    • 1...Sd5
      • 2.Sf7#
    • 1...Sh5
      • 2.Rd1#
    • 1...Sh7
      • 2.Rd1#
    • 1...Se8
      • 2.Rd1#
    • 1...Sg8
      • 2.Rd1#
  • Tries
    • 1.Sf7+?
      • 1...Kd5
        • 2.Rd1#
        • 2.Re5#
      • 1...Bxf7!
    • 1.Rd1+?
      • 1...Sd5
        • 2.Sf7#
      • 1...Bd5!
    • 1.Qc7+?
      • 1...Kd5
        • 2.Rd1#
      • 1...Sxc7!
    • 1.e8S+?
      • 1...Kd5
        • 2.Rd1#
        • 2.Re5#
      • 1...Sxe8+!
  • Keys
    • 1.b5!
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Rd1#
      • 1...Bd5
        • 2.e8S#
      • 1...Se4
        • 2.Qd4#
      • 1...Sd5
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(e);P-FLIGHT::R(A)
    • B(f);P_SPINS(g),SBLOCK::P=S
    • S(d);N_GUARD::QAB1(B),XS(d)
    • S(d);N_GUARD::QAB1(B)
    • S(g);P_PINP(F),P_SPINB(f),SBLOCK::S(H)
    • S(g);N_GUARD,P_PINP(F),P_SPINB(f)::R(A)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • B(f);P_SPINS(g),XS(H)
    • Try
      • R(A);CHECK
      • Vars
        • S(g);P_PINP(F),P_SPINB(f),P_SPINS(g)::S(H)
      • Refutation
        • B(f);P_SPINB(f),P_SPINS(g)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);P-FLIGHT::R(A)
      • Refutation
        • S(d);XQ(B)
    • Try
      • P(F);CHECK
      • Refutation
        • S(g);CHECK,P_SPINB(f),XS(F)
  • Actual
    • P(D);
    • Threat
      • QAB1(B)
    • Vars
      • K(e);P-FLIGHT::R(A)
      • B(f);P_SPINS(g),SBLOCK::P=S
      • S(g);N_GUARD,P_PINP(F),P_SPINB(f)::QAR2(B)
      • S(g);P_PINP(F),P_SPINB(f),SBLOCK::S(H)
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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).