MESON Chess Problem Database

Problem Display
PID: 265784 (8/3R1pp1/1N1P2p1/1n1pkPQ1/2P3pK/2n1B3/3N4/8 w - - 0 1)

Degener, Udo

Degenkolbe, Mirko

Sachmatija, 2022

8/3R1pp1/1N1P2p1/1n1pkPQ1/2P3pK/2n1B3/3N4/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bf4#
    • 1...Sxd6
      • 2.Re7#
    • 1...d4
      • 2.Bf4#
    • 1...gxf5
      • 2.Qe7#
    • 1...f6
      • 2.Qf4#
  • Tries
    • 1.Kxg4?
      • threat
        • 2.Qe7#
      • 1...gxf5+
        • 2.Qxf5#
      • 1...Sd4
        • 2.Bf4#
      • 1...f6
        • 2.Qf4#
      • 1...Sc7!
    • 1.Rxf7?
      • threat
        • 2.Qf4#
        • 2.Qe7#
      • 1...gxf5
        • 2.Qe7#
      • 1...Sc7
        • 2.Qf4#
      • 1...Se2
        • 2.Qe7#
      • 1...Sd4
        • 2.Bf4#
        • 2.Qf4#
      • 1...Kxd6!
    • 1.c5?
      • threat
        • 2.Re7#
      • 1...Sd4
        • 2.Bf4#
      • 1...Sc7!
    • 1.fxg6+?
      • 1...f5
        • 2.Qe7#
      • 1...Ke6!
  • Keys
    • 1.cxd5!
      • threat
        • 2.f6#
      • 1...Sxd5
        • 2.Sbc4#
      • 1...Sxd6
        • 2.Re7#
      • 1...gxf5
        • 2.Qe7#
      • 1...Se4
        • 2.Sdc4#
      • 1...Sd4
        • 2.Bf4#
      • 1...f6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(c);SBLOCK::B(B)
    • S(c);SBLOCK,XP(H)::R(I)
    • P(d);SBLOCK::B(B)
    • P(f);P_SPINP(f),SBLOCK,XP(E)::QAR2(F)
    • P(g);SBLOCK::QAB1(F)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(b)
      • Threat
        • QAR2(F)
      • Vars
        • P(f);CHECK,OGATE,P_SPINP(f),XP(E)::QAR1(F),XP(f)
        • S(c);SBLOCK::B(B)
        • P(g);SBLOCK::QAB1(F)
      • Refutation
        • S(c);
    • Try
      • R(I);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);P_SPINP(f),XP(E)::QAR2(F)
        • S(c);::QAB1(F)
        • S(a);::QAR2(F)
      • Refutation
        • K(e);S_FLIGHT,XP(H)
    • Try
      • P(C);
      • Threat
        • R(I)
      • Vars
        • S(c);SBLOCK::B(B)
      • Refutation
        • S(c);
    • Try
      • P(E);CHECK,XP(f)
      • Vars
        • P(g);P_SPINP(g),SBLOCK::QAR2(F)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • P(C);XP(d)
    • Threat
      • QAR(F)+P(E)
    • Vars
      • S(a);SBLOCK,XP(C)::S(G)
      • S(c);SBLOCK,XP(H)::R(I)
      • P(f);P_SPINP(f),SBLOCK,XP(E)::QAR2(F)
      • S(a);SBLOCK::S(A)
      • S(c);SBLOCK::B(B)
      • P(g);SBLOCK::QAB1(F)
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).