MESON Chess Problem Database

Problem Display
PID: 273494 (1N2B2q/7p/1BRpp3/1k1n1nQ1/4N3/PPp1p1b1/8/7K w - - 0 1)

Heister, A

Schackvarlden, 1938

1N2B2q/7p/1BRpp3/1k1n1nQ1/4N3/PPp1p1b1/8/7K

#2

9 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Rxd6#
    • 1...Qe5
      • 2.Rxd6#
    • 1...Qf6
      • 2.Rxd6#
    • 1...Sb4
      • 2.a4#
    • 1...Sf4
      • 2.Sxd6#
    • 1...Sxb6
      • 2.Rc5#
    • 1...Sf6
      • 2.Sxc3#
    • 1...Sd4
      • 2.Sxc3#
    • 1...Sg7
      • 2.Sxc3#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Rc5#
      • 1...Kxa5
        • 2.Ra6#
      • 1...Qxe8!
    • 1.Ba7?
      • threat
        • 2.Rc5#
      • 1...Ka5
        • 2.Ra6#
      • 1...Qxe8!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qe2#
      • 1...Sxb6
        • 2.Rc5#
      • 1...Qd4
        • 2.Rxd6#
      • 1...Sb4
        • 2.a4#
      • 1...Sf4
        • 2.Sxd6#
      • 1...Sd4
        • 2.Sxc3#
      • 1...e2
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(j);N_GUARD::B(I)+R(G),XP(g)
    • S(e);P_SPINS(f),SBLOCK::P(B)
    • S(e);P_SPINS(f),S_CUTB(c)::S(D),XP(g)
    • S(e);P_SPINS(f),SBLOCK,XB(F)::B(I)+R(G),DCHECK
    • S(e);N_GUARD,P_SPINS(f),S_CUTQ(j)::S(D),XP(a)
    • S(f);P_SPINS(e),S_CUTQ(j)::S(D),XP(a)
  • Tries
    • Try
      • B(F);
      • Threat
        • B(I)+R(G),DCHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTQ(j),XB(F)::R1(G)
      • Refutation
        • Q(j);XB(I)
    • Try
      • B(F);
      • Threat
        • B(I)+R(G),DCHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTQ(j)::R1(G)
      • Refutation
        • Q(j);XB(I)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • S(e);P_SPINS(f),SBLOCK,XB(F)::B(I)+R(G),DCHECK
      • Q(j);N_GUARD::B(I)+R(G),XP(g)
      • S(e);P_SPINS(f),SBLOCK::P(B)
      • S(e);P_SPINS(f),S_CUTB(c)::S(D),XP(g)
      • S(f);P_SPINS(e),S_CUTQ(j)::S(D),XP(a)
      • P(b);::QAB(E),XP(b)
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).