MESON Chess Problem Database

Problem Display
PID: 16363 (8/2B5/2rn1p2/1Rb2B2/1p1kPQ2/Np1P4/4PKn1/1N6 w - - 0 1)

Sachsel, Robert

Chess, 1940

8/2B5/2rn1p2/1Rb2B2/1p1kPQ2/Np1P4/4PKn1/1N6

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Rd5#
    • 1...Ba7
      • 2.Rd5#
    • 1...Sxe4+
      • 2.Qxe4#
    • 1...Sxb5
      • 2.Sxb5#
    • 1...b2
      • 2.Sc2#
  • Tries
    • 1.Rxb4+?
      • 1...Sc4
        • 2.Sb5#
        • 2.Rxc4#
      • 1...Bxb4!
    • 1.Qe3+?
      • 1...Ke5
        • 2.Sc4#
        • 2.d4#
      • 1...Sxe3!
    • 1.Qxd6+?
      • 1...Bxd6
        • 2.Rd5#
      • 1...Rxd6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qb2#
      • 1...Ke5+
        • 2.d4#
      • 1...Sxe4+
        • 2.dxe4#
      • 1...Sxb5
        • 2.Sxb5#
      • 1...bxa3
        • 2.Qc3#
      • 1...Sc4
        • 2.dxc4#
      • 1...Bb6
        • 2.Rd5#
      • 1...Ba7
        • 2.Rd5#
      • 1...b2
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(e);OGATE::R1(H)
    • S(g);CHECK,OGATE,P_SPINS(g),XP(F)::QAR1(G),XS(g)
    • S(g);XR(H)::S(D),XS(g)
    • P(b);N_GUARD::S(D)
  • Tries
    • Try
      • R(H);CHECK,XP(c)
      • Refutation
        • B(e);XR(H)
    • Try
      • Q(G);CHECK
      • Refutation
        • S(a);XQ(G)
    • Try
      • Q(G);CHECK,XS(g)
      • Vars
        • B(e);OGATE,XQ(G)::R1(H)
      • Refutation
        • R(f);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • K(d);CHECK,OGATE,P_SPINB(e),P_SPINS(g),S_FLIGHT::P(E)
      • S(g);CHECK,OGATE,XP(F)::QAR(G)+P(E),XS(g)
      • S(g);XR(H)::S(D),XS(g)
      • P(c);N_GUARD,XS(D)::QAB1(G)
      • S(g);OGATE::QAR(G)+P(E),XS(g)
      • B(e);OGATE::R1(H)
      • P(b);::QAB(G),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).