MESON Chess Problem Database

Problem Display
PID: 162430 (1Q4B1/3p4/5B1K/1p1pNkP1/1r4p1/2npr1P1/2N5/8 w - - 0 1)

Thomas, Georg

Skakbladet, 1940

1Q4B1/3p4/5B1K/1p1pNkP1/1r4p1/2npr1P1/2N5/8

#2

8 + 9

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bh7#
    • 1...Rxe5
      • 2.Qxe5#
    • 1...Se4
      • 2.Sxe3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sd6#
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf4#
      • 1...Rxg3
        • 2.Qe5#
      • 1...bxc4
        • 2.Qf4#
      • 1...dxc4
        • 2.Qf4#
      • 1...Rf3
        • 2.Sd6#
        • 2.Qe5#
      • 1...Re4
        • 2.Sd6#
      • 1...Re5
        • 2.Sd6#
        • 2.Qxe5#
      • 1...Re6
        • 2.Bh7#
        • 2.Qf4#
      • 1...Se2
        • 2.Sd6#
      • 1...Se4
        • 2.S2xe3#
        • 2.Sd4#
        • 2.S4xe3#
        • 2.Qf4#
        • 2.Qe5#
      • 1...d6
        • 2.Sxd6#
      • 1...Rxc4!
    • 1.Qd6?
      • threat
        • 2.Bh7#
      • 1...Ke4
        • 2.Bh7#
      • 1...Rxg3!
    • 1.Qe8?
      • threat
        • 2.Bh7#
        • 2.Qg6#
      • 1...Ke4
        • 2.Bh7#
        • 2.Qg6#
      • 1...Rxg3!
  • Keys
    • 1.Sf7!
      • threat
        • 2.Sd6#
      • 1...Ke4
        • 2.Qf4#
      • 1...Ke6
        • 2.Sd6#
      • 1...Rxg3
        • 2.Qe5#
      • 1...Re6
        • 2.Bh7#
      • 1...Se4
        • 2.Qe5#
      • 1...d6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(h);S_FLIGHT::B(H)
    • R(c);OGATE,XS(C)::QAR1(G),XR(c)
    • S(a);SBLOCK::S(A),XR(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(h);S_FLIGHT::QAR1(G)
        • R(c);N_GUARD,XP(B)::QAR1(G)
        • P(f);XS(C)::QAR1(G)
        • P(g);XS(C)::QAR1(G)
        • R(c);::S(C)
        • S(a);::S(C)
        • P(i);::S(C),XP(i)
      • Refutation
        • R(d);XS(C)
    • Try
      • Q(G);
      • Threat
        • B(H)
      • Vars
        • K(h);S_FLIGHT::B(H)
      • Refutation
        • R(c);XP(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Refutation
        • R(c);XP(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(h);S_FLIGHT::QAR1(G)
      • K(h);S_FLIGHT::B(H)+S(C)
      • R(c);N_GUARD,XP(B)::QAR1(G)
      • R(c);P_PINB(E),SBLOCK::B(H)
      • S(a);S_CUTR(c)::QAR1(G)
      • P(i);::S(C),XP(i)
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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).